2020-12-18 Tracking News

Contents on 18 December '20

IAU Minor Planet Center
- NEOCP Activity -- 32 listings
- New MPECs -- sixteen MPECs
Observers -- 34 observers
Impact Risk Monitoring -- seventeen objects
Chronology

CHANGES COMING: The Asteroid/Comet Connection Web site will soon focus completely on Earth's Busy Neighborhood reporting. Sometime on or soon after Sunday, December 27th, much of the site will be retired.* The Tracking News will be discontinued and taken down entirely** along with its supporting timeline pages, the archives of its predecessor online publication, Major News About Minor Objects, and our even longer running Consolidated Risk Tables feature. Remaining will be Earth's Busy Neighborhood along with its sky chart, ephemerides, and some supporting pages (e.g. Observatory Links). We do plan to make the Web site easier to use, more interesting as regards close-passing asteroids, and more glitch-free while needing much, much less manual attention here than the current site. -- Webmaster

*There may be some brief chaos when we take down the old site and put up the new. Please check back.
**You can still find the old files at the Internet Archive.

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1243 risk-listed objects, 171 have had news in the last 31 days. Updated at 1901 UTC on 18 Dec.
Earth's Busy Neighborhood traffic page
Ephemerides for risk-listed objects & close passers
News archive (old) & news image catalog (discontinued)
Object Links - mainly for radar targets & close passers (mostly discontinued)
Observing Campaigns (old)

The latest A/CC news is available via framed access, RSS news feed, or redirection.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. To keep track of what's new each day, watch the Chronology section.

NEOCP Activity on 18 December '20

The MPC's NEO Confirmation Page has 32 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 32 objects listed. Of these, 20 were "one nighters." So far The Tracking News has counted a total of 51 listings on the NEOCP today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs on 18 December '20

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been sixteen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-Y33 time-stamped "08:17 UT" - 2020 XB7 - see below
MPEC 2020-Y34 time-stamped "08:17 UT" - 2020 XC7 - see below
MPEC 2020-Y35 time-stamped "08:19 UT" - 2020 YH - see below
MPEC 2020-Y36 time-stamped "08:20 UT" - 2020 YJ - see below
MPEC 2020-Y37 time-stamped "08:21 UT" - 2020 YK - see below
MPEC 2020-Y38 time-stamped "08:21 UT" - 2020 YL - see below
MPEC 2020-Y39 time-stamped "08:23 UT" - 2020 YM - see below
MPEC 2020-Y40 time-stamped "08:24 UT" - 2020 YN - see below
MPEC 2020-Y41 time-stamped "08:25 UT" - 2020 YO - see below
MPEC 2020-Y42 time-stamped "12:28 UT" - Daily Orbit Update - see below
MPEC 2020-Y43 time-stamped "14:50 UT" - 2010 KD - see below
MPEC 2020-Y44 time-stamped "16:15 UT" - 2020 YP - see below
MPEC 2020-Y45 time-stamped "18:49 UT" - 2020 YS - see below
MPEC 2020-Y46 time-stamped "20:24 UT" - 2020 YT - see below
MPEC 2020-Y47 time-stamped "23:33 UT" - 2020 YU - see below
MPEC 2020-Y48 time-stamped "23:42 UT" - 2020 YV

MPEC 2020-Y48 - "23:42 UT" - 2020 YV

K20Y00V 2020 YV (small asteroid, H=25.38 ~28m) was picked up at 0643 UT on 17 Dec. by the Mt. Lemmon Survey (MLS), observing it at Dec. 17.28-29p3 and 18.24p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (Dec. 17.31-32p4), program code 1 via Schwarzschild Obs. (Dec. 18.76-77p5), and San Marcello Pistoiese Obs. (Dec. 18.86-87p3).

MPEC 2020-Y47 - "23:33 UT" - 2020 YU

K20Y00U 2020 YU (small asteroid, Earth MOID=2.9 LD, H=25.6 ~26m) was picked up at 1042 UT on 18 Dec. by MLS, observing it at Dec. 18.45-47p3. This detection was confirmed by the Catalina Sky Survey (CSS) (Dec. 17.32-33p2), Steward Mt. Lemmon Sta. (Dec. 18.48p4 & 18.53p4), Xingming Obs. #3 (Dec. 18.78p5), Schwarzschild Obs./code 1 (Dec. 18.91p3), and Drebach Obs. (Dec. 18.92-93p6).

MPEC 2020-Y46 - "20:24 UT" - 2020 YT

K20Y00T 2020 YT (small asteroid, H=25.61 ~26m) was picked up at 0707 UT on 17 Dec. by MLS, observing it at Dec. 17.30-31p4. This detection was confirmed by the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Dec. 17.41-42p3), Schwarzschild Obs./code 1 (Dec. 17.81p3 at V=22.2-4 & 18.79-80p5 at V=22.1-23.0), Astronomical Research Obs. Westfield (Dec. 18.20-21p2 at V=22.2-5), and Steward Mt. Lemmon Sta. (Dec. 18.21p2).

MPEC 2020-Y45 - "18:49 UT" - 2020 YS

K20Y00S 2020 YS (H=21.4 ~178m) was picked up at 0849 UT on 17 Dec. by Pan-STARRS 1 (PS1), observing it at Dec. 16.38-40p2 and 17.37-40p4. This detection was confirmed by Pan-STARRS 2 (PS2) (Dec. 7.35-39p3 at G=20.52-21.61 & 11.37-39p3 at G=20.73-22.53) and ARO Westfield (Dec. 18.23-24p2).

MPEC 2020-Y44 - "16:15 UT" - 2020 YP

K20Y00P 2020 YP (small asteroid, Earth MOID=1.2 LD, H=24.6 ~41m) was picked up at 1131 UT on 16 Dec. by MLS, observing it at Dec. 16.48-49p3 and 17.49p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 16.51p3 & 18.47-48p4) and Schwarzschild Obs./code 1 (Dec. 18.13p3).

MPEC 2020-Y43 - "14:50 UT" - 2010 KD

K10K00D 2010 KD (borderline-small, H=22.0 ~135m) from PS1 (2018 June 24.57-60p4 at G=22.19-93), PS2 (Dec. 9.44-47p2), MLS (Dec. 18.40-42p4), and Steward Mt. Lemmon Sta. (Dec. 18.49-50p2)

<< DOU on 18 December '20 >> MPEC 2020-Y42 - "12:28 UT" - Daily Orbit Update

Observations of risk-listed objects
K20Y00F 2020 YF (small asteroid, Q=0.988 AU, arc=1 day, H=29.0 ~5m, close passer, NHATS target) from CSS (Dec. 17.22p2) and ARO Westfield (Dec. 18.12p4)
K20X06V 2020 XV6 (small asteroid, q=0.185 AU, arc=3 days, H=22.8 ~93m) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Dec. 18.09-10p4) and Steward Mt. Lemmon Sta. (Dec. 18.22p3)
K20X06U 2020 XU6 (arc=4 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (Dec. 18.37-38p2)
K20X06A 2020 XA6 (small asteroid, arc=4 days, H=24.0 ~54m) from UH/Tholen NEO Follow-Up 2.24m Telescope (Dec. 16.31p2) and Steward Mt. Lemmon Sta. (Dec. 18.22-23p3)
K20X05K 2020 XK5 (small asteroid, Q=4.123 AU, arc=6 days, H=23.7 ~62m) from Holmes/CTIO (Dec. 17.23-24p3 at V=22.0-22.1 & 18.22-23p3 at G=21.8)
K20X03X 2020 XX3 (small asteroid, arc=7 days, H=28.5 ~7m, close passer, NHATS target) from Schwarzschild Obs./code 1 (Dec. 17.74-75p3)
K20X01K 2020 XK1 (small asteroid, arc=1 day, H=30.6 ~3m, close passer, NHATS target) from MLS (Dec. 6.15-16p4)
K20V00V 2020 VV (small asteroid, arc=61 days, H=27.2 ~12m, close passer, NHATS target) from program code 5 via Discovery Channel Telescope (DCT) (Dec. 17.33p1 at G=24.2)
K17U52K 2017 UK52 (small asteroid, arc=2 opp, H=26.3 ~19m, close passer) from CSS (May 3.17p2)
99942 99942 Apophis (2004 MN4) (NHATS target) from CSS (Dec. 4.45-46p3 & 16.42-43p4), ATLAS Haleakala (Dec. 7.58-60p4 & 10.64-66p4), ATLAS Mauna Loa (Dec. 9.57-59p4), and PS1 (Dec. 12.60-61p2)
Observations of recently (no longer) risk-listed objects
K20X06E 2020 XE6 (arc=6 days, H=19.8 ~371m) from CSS-Kuiper (Dec. 18.39p4)
K20X02V 2020 XV2 (small asteroid, Q=4.585 AU, arc=8 days, H=23.4 ~71m) from Holmes/CTIO (Dec. 17.27-28p6)
K20X00Z 2020 XZ (small asteroid, arc=13 days, H=26.0 ~21m) from CSS-Kuiper (Dec. 18.44-45p4 at G=21.75-22.03)
Observations of close-passing objects
K20Y00O 2020 YO (arc=1 day, H=29.4 ~4m) from Schwarzschild Obs./code 1 (Dec. 18.15p3) and CSS-Kuiper (Dec. 18.36-37p4)
K20Y00G 2020 YG (arc=2 days, H=28.3 ~7m) from ARO Westfield (Dec. 18.04-05p3)
K20X06H 2020 XH6 (arc=4 days, H=27.1 ~13m) from Schwarzschild Obs./code 1 (Dec. 17.80p3 & 18.14-15p3)
K20X05S 2020 XS5 (arc=8 days, H=26.6 ~16m) from Schwarzschild Obs./code 1 (Dec. 17.80p4)
K20X05G 2020 XG5 (arc=6 days, H=27.1 ~13m, NHATS target) from CSS-Kuiper (Dec. 18.38p4)
K20X04Z 2020 XZ4 (arc=7 days, H=24.7 ~39m, NHATS target) from Steward Mt. Lemmon Sta. (Dec. 18.42-43p3)
K20X04Y 2020 XY4 (arc=7 days, H=26.9 ~14m, NHATS target) from Schwarzschild Obs./code 1 (Dec. 17.82-83p5 & 18.13p3)
K20X04V 2020 XV4 (arc=6 days, H=25.4 ~28m) from Holmes/CTIO (Dec. 17.23-24p3), PS1 (Dec. 17.48-51p3), and Steward Mt. Lemmon Sta. (Dec. 18.36p3)
K20X04C 2020 XC4 (arc=8 days, H=26.0 ~21m, NHATS target) from ATLAS Haleakala (Dec. 17.29-32p6)
K20X03J 2020 XJ3 (arc=9 days, H=25.6 ~26m, NHATS target) from CSS (Dec. 17.38-40p3) and Schwarzschild Obs./code 1 (Dec. 17.80p3 & 18.14p3)
K20X01B 2020 XB1 (arc=12 days, H=26.3 ~19m) from Steward Mt. Lemmon Sta. (Dec. 18.42-43p4)
K20X00H 2020 XH (arc=13 days, H=24.6 ~41m) from the Bok Telescope (Dec. 7.48-49p3)
K20X00B 2020 XB (Q=4.065 AU, arc=16 days, H=25.2 ~31m) from Holmes/CTIO (Dec. 17.23-25p3)
K20W05W 2020 WW5 (arc=27 days, H=28.7 ~6m, NHATS target) from MLS (Dec. 17.30-31p4)
K20O05K 2020 OK5 (arc=157 days, H=25.2 ~31m, NHATS target) from Mirasteilas Obs. (Dec. 17.96-97p4)
K20B03N 2020 BN3 (q=0.382 AU, Q=4.605 AU, arc=5 days, H=25.2 ~31m) from MLS (Jan. 25.28p2)
K18X04E 2018 XE4 (arc=2 opp, H=26.4 ~18m) from Schwarzschild Obs./code 1 (Dec. 17.92p3)
K01SS6G 2001 SG286 (arc=6 opp, H=21.0 ~214m) from ATLAS Mauna Loa (Sept. 18.24-29p4)
o1647 501647 2014 SD224 from PS2 (Dec. 5.55-58p3), CSS (Dec. 17.22-23p4), and ATLAS Haleakala (Dec. 17.48-52p9)
i1987 441987 2010 NY65 (radar support) from ATLAS Mauna Loa (July 7.35-38p4)
Observation campaigns (NHATS targets, radar support)
K20Y00C 2020 YC (arc=2 days, H=26.0 ~21m, NHATS) from Sormano Obs. (Dec. 17.85p3)
K20X02O 2020 XO2 (arc=10 days, H=24.8 ~37m, NHATS) from Holmes/CTIO (Dec. 18.18-20p3) and Steward Mt. Lemmon Sta. (Dec. 18.39p3)
K20W03Q 2020 WQ3 (arc=39 days, H=25.7 ~25m, NHATS) from CSS-Kuiper (Dec. 17.46p1 & 17.50p2)
K20U07F 2020 UF7 (arc=90 days, H=24.7 ~39m, NHATS) from Holmes/CTIO (Dec. 18.11-12p3)
K20T08J 2020 TJ8 (arc=65 days, H=24.9 ~35m, NHATS) from Steward Mt. Lemmon Sta. (Dec. 18.45-46p4)
K20S00O 2020 SO (Q=0.988 AU, arc=32 days, H=28.5 ~7m, NHATS) from Schwarzschild Obs./code 1 (Dec. 17.78p3)
K20R02R 2020 RR2 (arc=98 days, H=24.9 ~35m, NHATS) from PS1 (Dec. 17.43-44p2)
K20F01T 2020 FT1 (arc=2 opp, H=22.4 ~112m, NHATS) from PS1 (Dec. 17.53-56p4)
K13Y02S 2013 YS2 (arc=2 opp, H=23.6 ~65m, NHATS) from the Zwicky Transient Facility (ZTF) (Dec. 17.22-27p4)
K11G60D 2011 GD60 (arc=3 opp, H=21.8 ~148m, NHATS) from PS2 (Dec. 6.46-48p3), W.F. Cashwell via Slooh.com Chile Obs. (Dec. 16.19-22p3), and ATLAS Mauna Loa (Dec. 17.41-43p4)
K10W08T 2010 WT8 (arc=4 opp, H=21.9 ~141m, NHATS) from MLS (Dec. 17.34-36p4)
K07U01Y 2007 UY1 (arc=3 opp, H=23.0 ~85m, NHATS) from PS1 (Dec. 17.33-34p3)
a3599 363599 2004 FG11 (radar) from CSS (April 4.36-38p4)
02102 2102 Tantalus (1975 YA) (radar) from ATLAS Haleakala (May 13.59-61p4) and CSS (May 14.43-45p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20Y00E 2020 YE (Q=4.394 AU, arc=12 days, H=24.0 ~54m) from MLS (Dec. 6.43p2) and ARO Westfield (Dec. 18.24-25p5)
K20X06Q 2020 XQ6 (q=0.325 AU, arc=4 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (Dec. 18.30p4)
K20X06K 2020 XK6 (arc=4 days, H=25.2 ~31m) from Holmes/CTIO (Dec. 17.21p3 & 18.21-22p3)
K20X06F 2020 XF6 (Q=4.061 AU, arc=6 days, H=22.3 ~117m) from Holmes/CTIO (Dec. 17.30-31p3 at G=22.0-22.1)
K20X06D 2020 XD6 (arc=4 days, H=25.2 ~31m) from Schwarzschild Obs./code 1 (Dec. 17.92p5) and Steward Mt. Lemmon Sta. (Dec. 18.32p4)
K20X06C 2020 XC6 (arc=4 days, H=24.7 ~39m) from CSS-Kuiper (Dec. 18.34-35p4)
K20X06B 2020 XB6 (i=55.7°, arc=3 days, H=22.6 ~102m) from Steward Mt. Lemmon Sta. (Dec. 18.23p3)
K20X05W 2020 XW5 (arc=11 days, H=25.1 ~32m) from Steward Mt. Lemmon Sta. (Dec. 18.43-44p4)
K20X05N 2020 XN5 (arc=6 days, H=22.3 ~117m) from Holmes/CTIO (Dec. 18.18-19p3)
K20X05E 2020 XE5 (arc=7 days, H=24.7 ~39m) from Holmes/CTIO (Dec. 17.26-28p3)
K20X05B 2020 XB5 (arc=9 days, H=24.0 ~54m) from CSS-Kuiper (Dec. 18.45-46p2)
K20X04H 2020 XH4 (arc=8 days, H=23.2 ~78m) from Holmes/CTIO (Dec. 17.25-26p3) and Steward Mt. Lemmon Sta. (Dec. 18.44p2)
K20X03S 2020 XS3 (arc=9 days, H=25.3 ~29m) from Schwarzschild Obs./code 1 (Dec. 17.82p4 at V=22.0-23.8)
K20X03R 2020 XR3 (arc=13 days, H=22.5 ~107m) from Holmes/CTIO (Dec. 18.13-14p3)
K20X03G 2020 XG3 (arc=9 days, H=24.9 ~35m) from Schwarzschild Obs./code 1 (Dec. 17.93-94p3)
K20X03D 2020 XD3 (arc=8 days, H=25.6 ~26m) from MLS (Dec. 17.25-27p4)
K20X03A 2020 XA3 (arc=9 days, H=24.5 ~43m) from Schwarzschild Obs./code 1 (Dec. 17.79p3)
K20X02Y 2020 XY2 (arc=34 days, H=23.2 ~78m) from Holmes/CTIO (Dec. 18.15-16p3 at G=22.1)
K20X02Q 2020 XQ2 (i=41.9°, arc=9 days, H=22.7 ~98m) from Schwarzschild Obs./code 1 (Dec. 17.71-72p3)
K20X02P 2020 XP2 (arc=11 days, H=22.1 ~129m) from Steward Mt. Lemmon Sta. (Dec. 18.39p4)
K20X02N 2020 XN2 (arc=10 days, H=23.4 ~71m) from Steward Mt. Lemmon Sta. (Dec. 18.33p4)
K20X02D 2020 XD2 (arc=11 days, H=24.1 ~51m) from Schwarzschild Obs./code 1 (Dec. 18.01-02p3)
K20X01P 2020 XP1 (arc=11 days, H=24.3 ~47m) from MLS (Dec. 17.27-29p4 at G=21.64-22.23)
K20X00K 2020 XK (arc=14 days, H=24.8 ~37m) from Steward Mt. Lemmon Sta. (Dec. 18.40-41p2)
K20X00J 2020 XJ (arc=14 days, H=25.2 ~31m) from Steward Mt. Lemmon Sta. (Dec. 18.34-35p4 at G=21.09-22.32)
K20W00Q 2020 WQ (arc=58 days, H=24.1 ~51m) from Holmes/CTIO (Dec. 17.34-35p3)
K20V07C 2020 VC7 (arc=43 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (Dec. 18.39p4)
K20V03R 2020 VR3 (arc=36 days, H=24.7 ~39m) from Holmes/CTIO (Dec. 17.18-21p3 at G=22.7-9)
K20V01E 2020 VE1 (arc=44 days, H=22.7 ~98m) from Holmes/CTIO (Dec. 18.12-14p3 at G=22.0-22.1)
K20U03X 2020 UX3 (arc=14 days, H=24.7 ~39m) from Steward Mt. Lemmon Sta. (Oct. 28.25-26p3)
K20U01S 2020 US1 (arc=99 days, H=25.0 ~34m) from Holmes/CTIO (Dec. 17.30p2)
K20T07T 2020 TT7 (arc=64 days, H=22.2 ~123m) from PS1 (Dec. 17.44-46p3)
K20T00P 2020 TP (arc=13 days, H=23.7 ~62m) from PS2 (Oct. 10.37-40p4)
K20R03H 2020 RH3 (arc=12 days, H=22.6 ~102m) from CSS (Sept. 20.33-35p4)
K20R02D 2020 RD2 (i=49.8°, arc=6 days, H=23.4 ~71m) from Teplice Obs. (Sept. 11.80p4)
K20R00F 2020 RF (Q=4.220 AU, arc=27 days, H=22.3 ~117m) from PS2 (Sept. 14.44-46p3) and CSS (Sept. 17.44-45p4)
K20Q04O 2020 QO4 (arc=48 days, H=22.1 ~129m) from CSS (Aug. 27.37-39p3)
K20B00R 2020 BR (i=36.4°, q=0.309 AU, arc=5 days, H=23.0 ~85m) from Tacande Obs. (Jan. 19.02p3)
K16A65U 2016 AU65 (q=0.355 AU, arc=3 opp, H=22.7 ~98m) from MLS (Dec. 17.30-31p3)
K12XD3E 2012 XE133 (arc=2 opp, H=23.3 ~74m) from CSS (Dec. 17.30-31p4), ATLAS Haleakala (Dec. 17.51-54p4), and Mirasteilas Obs. (Dec. 17.97-98p7)
K12S32H 2012 SH32 (arc=2 opp, H=22.2 ~123m) from PS2 (Sept. 21.38-42p3)
K10Q05A 2010 QA5 (Q=4.762 AU, arc=2 opp, H=22.3 ~117m) from Steward Mt. Lemmon Sta. (Sept. 14.46-47p4)
K09X08L 2009 XL8 (arc=2 opp, H=22.6 ~102m) from MLS (Dec. 17.26-27p4)
J97X10E 1997 XE10 (arc=2 opp, H=24.6 ~41m) from MLS (Dec. 17.10-11p4)
K20W04W 2020 WW4 (arc=25 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (Dec. 18.36-38p3)
K20T04M 2020 TM4 (Q=4.139 AU, arc=66 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (Dec. 17.54-55p4)
K20S01T 2020 ST1 (arc=112 days, H=22.0 ~135m) from PS1 (Nov. 7.27-30p3) and ATLAS Mauna Loa (Dec. 17.45-47p5)
K20G02C 2020 GC2 (arc=27 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (April 29.36-37p2)
K16Y00M 2016 YM (arc=3 opp, H=22.0 ~135m) from ATLAS Mauna Loa (Dec. 17.41-42p2 & 17.46-49p4)
K09W11D 2009 WD11 (arc=2 opp, H=22.0 ~135m) from MLS (Dec. 17.18-19p4)
K07C15H 2007 CH15 (arc=3 opp, H=21.8 ~148m) from PS1 (Aug. 8.49-51p3) and ATLAS Haleakala (Aug. 12.46-50p4)
Observations of other objects
K20X05M 2020 XM5 (arc=7 days, H=20.3 ~295m) from Holmes/CTIO (Dec. 17.32-33p3 at G=22.0-22.2) and CSS-Kuiper (Dec. 18.41-43p4)
K20X05C 2020 XC5 (Q=4.152 AU, arc=6 days, H=20.9 ~224m) from Steward Mt. Lemmon Sta. (Dec. 18.31p3)
K20X04W 2020 XW4 (arc=9 days, H=21.3 ~186m) from MLS (Dec. 17.43-44p4) and Steward Mt. Lemmon Sta. (Dec. 17.49-50p4 & 18.40p1)
K20X04D 2020 XD4 (i=38.9°, arc=9 days, H=20.2 ~309m) from Holmes/CTIO (Dec. 18.20-21p3)
K20X04A 2020 XA4 (arc=8 days, H=21.2 ~195m) from PS1 (Dec. 17.43-47p3)
K20X03Z 2020 XZ3 (arc=9 days, H=20.7 ~245m) from Steward Mt. Lemmon Sta. (Dec. 18.41p3)
K20X03L 2020 XL3 (arc=9 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (Dec. 18.36p4)
K20X01N 2020 XN1 (i=36.8°, Q=4.009 AU, arc=30 days, H=19.6 ~407m) from ZTF (Dec. 17.22-27p6 & 17.32-33p2) and Steward Mt. Lemmon Sta. (Dec. 18.44-45p4)
K20W05S 2020 WS5 (i=40.9°, Q=4.057 AU, arc=21 days, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (Dec. 18.44p4)
K20W05M 2020 WM5 (Q=4.829 AU, arc=20 days, H=20.6 ~257m) from PS2 (Dec. 9.59-63p2), CSS (Dec. 17.32-34p4), and Steward Mt. Lemmon Sta. (Dec. 17.50-54p4 & 18.36-38p4)
K20W05A 2020 WA5 (arc=23 days, H=21.5 ~170m) from CSS (Dec. 17.23-25p4), ATLAS Haleakala (Dec. 17.49-50p4), Mirasteilas Obs. (Dec. 17.99-00p4), and Steward Mt. Lemmon Sta. (Dec. 18.44-45p4)
K20W04J 2020 WJ4 (arc=33 days, H=20.9 ~224m) from Steward Mt. Lemmon Sta. (Dec. 17.54-55p4)
K20W02T 2020 WT2 (arc=28 days, H=21.1 ~204m) from Holmes/CTIO (Dec. 17.32-33p3) and Steward Mt. Lemmon Sta. (Dec. 18.48p4)
K20W02H 2020 WH2 (Q=4.569 AU, arc=29 days, H=20.0 ~339m) from the Spacewatch 0.9m telescope (Dec. 17.45-49p3) and Steward Mt. Lemmon Sta. (Dec. 17.55p4)
K20W01Z 2020 WZ1 (i=45.2°, arc=31 days, H=20.4 ~282m) from Holmes/CTIO (Dec. 18.17p3)
K20W01L 2020 WL1 (arc=31 days, H=19.9 ~355m) from Steward Mt. Lemmon Sta. (Dec. 17.48-50p4)
K20V06Q 2020 VQ6 (arc=32 days, H=21.2 ~195m) from ZTF (Dec. 17.19-26p5)
K20V03N 2020 VN3 (arc=37 days, H=20.3 ~295m) from Steward Mt. Lemmon Sta. (Dec. 17.54p4)
K20V03M 2020 VM3 (arc=37 days, H=20.8 ~234m) from PS1 (Dec. 17.52-56p4) and Mirasteilas Obs. (Dec. 17.94-95p3)
K20U05K 2020 UK5 (arc=92 days, H=21.1 ~204m) from Holmes/CTIO (Dec. 18.08-09p3 at G=22.0-22.3)
K20U01V 2020 UV1 (arc=62 days, H=20.1 ~323m) from PS1 (Dec. 17.38-40p3)
K20T07C 2020 TC7 (arc=65 days, H=19.6 ~407m) from Holmes/CTIO (Dec. 18.06-07p3)
K20T04G 2020 TG4 (Q=4.171 AU, arc=89 days, H=20.0 ~339m) from Mirasteilas Obs. (Dec. 17.90-91p4)
K20R00U 2020 RU (Q=4.833 AU, arc=109 days, H=19.2 ~490m) from Mirasteilas Obs. (Dec. 18.01p2)
K20Q06Q 2020 QQ6 (Q=4.107 AU, arc=126 days, H=19.8 ~371m) from PS1 (Dec. 17.32-34p3)
K20Q00D 2020 QD (Q=4.154 AU, arc=50 days, H=21.3 ~186m) from CSS (Sept. 15.44-45p3)
K20P01D 2020 PD1 (Q=4.135 AU, arc=179 days, H=19.2 ~490m) from Spacewatch 0.9m (Dec. 17.25-28p3) and Holmes/CTIO (Dec. 18.12-13p3)
K20O08J 2020 OJ8 (i=37.1°, arc=140 days, H=18.8 ~589m) from CSS-Kuiper (Dec. 17.51-54p4)
K20O07C 2020 OC7 (arc=174 days, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (Dec. 17.48-49p4)
K20O06T 2020 OT6 (arc=141 days, H=20.0 ~339m) from Holmes/CTIO (Dec. 18.05-07p3 at G=22.4-6)
K20N00D 2020 ND (arc=185 days, H=21.7 ~155m) from SONEAR (July 23.15p3)
K20M03Z 2020 MZ3 (Q=4.359 AU, arc=202 days, H=20.0 ~339m) from the Spacewatch 1.8m telescope (Dec. 17.40-42p3) and Schwarzschild Obs./code 1 (Dec. 18.10p2 at V=22.5-6)
K20L03D 2020 LD3 (arc=2 opp, H=20.5 ~269m) from Steward Mt. Lemmon Sta. (Dec. 17.52-54p4)
K20L03B 2020 LB3 (arc=2 opp, H=19.6 ~407m) from PS1 (Dec. 17.31-34p4)
K20L02A 2020 LA2 (Q=7.490 AU, arc=185 days, H=19.8 ~371m) from MLS (Dec. 17.29-31p4)
K20G03N 2020 GN3 (arc=2 opp, H=19.1 ~513m) from Spacewatch 0.9m (Dec. 17.14-18p3)
K20B10N 2020 BN10 (arc=2 opp, H=20.9 ~224m) from Holmes/CTIO (Dec. 17.26-29p3 at G=22.0-22.1)
K20A03D 2020 AD3 (arc=2 opp, H=21.6 ~162m) from CSS-Kuiper (Dec. 17.51-53p4 at G=21.35-22.04)
K19F00M 2019 FM (arc=3 opp, H=21.1 ~204m) from MLS (Dec. 17.25-27p4 at G=21.68-22.33)
K19F00J 2019 FJ (i=44.4°, q=0.295 AU, arc=3 opp, H=19.1 ~513m) from Holmes/CTIO (Dec. 17.29-31p3)
K18X01Z 2018 XZ1 (i=51.2°, arc=3 opp, H=19.6 ~407m) from PS2 (Nov. 14.51-55p3)
K18G05V 2018 GV5 (arc=2 opp, H=19.9 ~355m) from PS1 (Dec. 17.26-30p4)
K18G04X 2018 GX4 (arc=4 opp, H=19.2 ~490m) from CSS (Dec. 17.19-21p3) and ATLAS Haleakala (Dec. 17.41-47p4)
K17X62L 2017 XL62 (arc=2 opp, H=18.8 ~589m) from MLS (Dec. 17.12-13p4)
K17V12T 2017 VT12 (arc=4 opp, H=20.4 ~282m) from ATLAS Mauna Loa (Dec. 2.36-40p4)
K17S19E 2017 SE19 (arc=3 opp, H=19.8 ~371m) from PS2 (Dec. 6.31-34p3) and PS1 (Dec. 12.27-31p4)
K16J34N 2016 JN34 (i=45.2°, arc=3 opp, H=20.4 ~282m) from MLS (Dec. 17.23-25p4)
K16E85D 2016 ED85 (Q=5.062 AU, arc=3 opp, H=17.7 ~977m) from PS1 (Sept. 17.48-50p3), ATLAS Haleakala (Oct. 6.60-64p4 & 14.62-65p7), and ATLAS Mauna Loa (Oct. 16.62-64p4)
K15DK0E 2015 DE200 (arc=4 opp, H=20.2 ~309m) from CSS (Jan. 28.26-28p4)
K15C13V 2015 CV13 (arc=3 opp, H=20.4 ~282m) from PS1 (Dec. 17.48-51p3)
K15B04F 2015 BF4 (arc=6 opp, H=20.5 ~269m) from Castelmartini Obs. (Nov. 23.91-92p3) and PS1 (Dec. 11.26-30p4)
K14UB6R 2014 UR116 (arc=6 opp, H=19.8 ~371m) from ATLAS Mauna Loa (Oct. 11.62-63p4)
K14Qh3L 2014 QL433 (arc=4 opp, H=19.9 ~355m) from PS2 (Aug. 11.55-59p3)
K14J15K 2014 JK15 (arc=113 days, H=21.0 ~214m) from PS1 (2014 Feb. 10.35-38p2)
K14HH8P 2014 HP178 (arc=70 days, H=21.7 ~155m) from PS1 (2014 March 24.61p2)
K14H02K 2014 HK2 (arc=81 days, H=20.3 ~295m) from PS1 (2014 May 5.27-29p3)
K14C14J 2014 CJ14 (arc=3 opp, H=21.0 ~214m) from PS1 (Dec. 17.38-40p3)
K13X04G 2013 XG4 (arc=2 opp, H=20.5 ~269m) from MLS (Dec. 17.36-37p4)
K13U14X 2013 UX14 (arc=4 opp, H=18.3 ~741m) from ATLAS Haleakala (Dec. 17.36-38p4)
K12S22A 2012 SA22 (arc=3 opp, H=18.1 ~812m) from Mirasteilas Obs. (Dec. 17.81-82p3)
K12D08P 2012 DP8 (arc=5 opp, H=19.9 ~355m) from ATLAS Mauna Loa (Sept. 9.53-58p6 & 22.49-56p4), PS1 (Sept. 11.53-57p4), and PS2 (Sept. 11.55-56p2)
K11G27O 2011 GO27 (arc=4 opp, H=19.0 ~537m) from ATLAS Haleakala (Oct. 14.61-63p4)
K10VJ8U 2010 VU198 (arc=3 opp, H=18.6 ~645m) from PS1 (Dec. 17.43-46p4)
K10TH8A 2010 TA178 (arc=3 opp, H=20.0 ~339m) from MLS (Dec. 17.30-31p4)
K10ED5C 2010 EC135 (arc=3 opp, H=20.3 ~295m) from PS2 (July 9.31-34p3) and PS1 (July 14.34-38p3)
K09WA4G 2009 WG104 (arc=4 opp, H=20.2 ~309m) from Mirasteilas Obs. (Dec. 17.85-86p3)
K08CB8Z 2008 CZ118 (arc=4 opp, H=18.5 ~676m) from ATLAS Haleakala (Dec. 17.28-31p4)
K07X10B 2007 XB10 (i=41.3°, arc=4 opp, H=17.7 ~977m) from MLS (Dec. 17.27-29p4)
K07T08G 2007 TG8 (Q=4.305 AU, arc=3 opp, H=18.6 ~645m) from ATLAS Haleakala (Oct. 14.61-64p4 & 22.60-63p3)
K06N00L 2006 NL (q=0.360 AU, arc=7 opp, H=20.0 ~339m) from ATLAS Haleakala (July 2.56-58p4) and ATLAS Mauna Loa (July 11.42-44p4)
K04X29L 2004 XL29 (i=43.8°, arc=5 opp, H=19.1 ~513m) from MLS (Dec. 17.26-27p4)
K04X14P 2004 XP14 (arc=4 opp, H=19.4 ~446m) from PS2 (July 9.27-29p3) and PS1 (July 25.28-32p4)
K04U01S 2004 US1 (arc=2 opp, H=20.6 ~257m) from PS1 (Nov. 10.37-40p4, 13.41p1 & 13.46-47p2)
K04R84F 2004 RF84 (arc=4 opp, H=18.4 ~708m) from ATLAS Haleakala (Oct. 14.36-41p7 & 18.37-39p7)
K04A00C 2004 AC (arc=4 opp, H=19.0 ~537m) from ATLAS Haleakala (Dec. 9.61-64p3) and ATLAS Mauna Loa (Dec. 11.60-63p4)
K03Y00J 2003 YJ (arc=4 opp, H=20.3 ~295m) from ATLAS Haleakala (Dec. 15.37-40p4), Spacewatch 0.9m (Dec. 17.30-33p3), and ATLAS Mauna Loa (Dec. 17.35-39p4)
K03U22G 2003 UG22 (arc=3 opp, H=21.2 ~195m) from PS2 (Oct. 26.37-41p3)
K02T67S 2002 TS67 (arc=6 opp, H=19.1 ~513m) from MLS (Dec. 17.34-36p4)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.8 ~589m) from PS2 (Dec. 7.54-57p3 & 8.49-53p4), CSS (Dec. 17.37-38p4), and ATLAS Haleakala (Dec. 17.58-60p4)
K01G02S 2001 GS2 (arc=3 opp, H=20.5 ~269m) from PS2 (March 24.44-48p4)
K00T28U 2000 TU28 (arc=3 opp, H=21.1 ~204m) from PS2 (Oct. 14.37-40p3) and PS1 (Oct. 23.52p1 & 24.47-49p2)
K00P27Q 2000 PQ27 (arc=3 opp, H=20.0 ~339m) from MLS (Dec. 17.21-23p4)
K00K00A 2000 KA (arc=4 opp, H=21.7 ~155m) from CSS (May 17.35-36p4) and PS2 (May 18.41-44p3 & 20.41-45p4)
J98W02A 1998 WA2 (Q=4.271 AU, arc=2 opp, H=19.8 ~371m) from PS1 (Nov. 17.34-38p2)
J96A02E 1996 AE2 (i=37.4°, arc=4 opp, H=20.3 ~295m) from CSS (Jan. 18.37-39p4)
r9940 539940 2017 HW1 from MLS (April 11.37-39p4 & 20.35-38p4), CSS (April 15.36-38p4), ATLAS Haleakala (April 20.46-51p3 & 20.56p1), and ATLAS Mauna Loa (April 26.37-39p4)
r1899 531899 2013 BE19 from ATLAS Haleakala (Jan. 21.62-64p4)
q5364 525364 2005 CL7 from ATLAS Haleakala (Feb. 3.37-39p3)
p2244 512244 2015 YE18 from CSS (Jan. 19.13-14p3)
o5657 505657 2014 SR339 from PS1 (Aug. 13.50-53p3)
o5093 505093 2011 VQ5 from ATLAS Haleakala (Dec. 17.46-49p4)
o0094 500094 2012 BC20 from ATLAS Mauna Loa (March 5.36-38p4, July 28.36-38p4, Aug. 1.37-39p3 & 16.37-45p8), ATLAS Haleakala (July 18.37-41p4, 30.36-38p4, Aug. 10.34-38p3 & 11.36-39p3), PS1 (Aug. 1.47-50p4 & Sept. 12.26-29p4), and Pallerols Obs. (Aug. 19.86-87p2 & 19.91p1)
n7094 497094 2004 AH from ATLAS Mauna Loa (Dec. 17.37-42p4)
n5615 495615 2015 PQ291 from ATLAS Haleakala (May 12.35-37p4, 16.33-38p4 & 25.36-38p3), SONEAR (May 13.12p3), ATLAS Mauna Loa (May 14.35-37p4, 19.36-39p4 & 27.37-39p4), and PS1 (May 16.28-32p4)
n4880 494880 2008 SQ7 from PS1 (March 21.49-58p8) and MLS (April 2.36-38p3)
n2143 492143 2013 OE from PS2 (Feb. 5.24-28p4)
m3547 483547 2003 WM25 from MLS (Dec. 17.38-40p4)
m2505 482505 2012 TQ78 from PS2 (Nov. 26.49-52p3)
l7524 477524 2010 EH43 from CSS (March 22.19-21p2)
l4179 474179 1999 VS6 from PS1 (Oct. 10.62-63p3, 14.61-63p4, 20.43-47p4 & 25.56-58p3) and PS2 (Oct. 18.50-51p2)
k8910 468910 2014 KQ76 from CSS (April 29.37-38p4)
k7963 467963 2012 JT17 from PS1 (Dec. 17.48-51p4)
k5824 465824 2010 FR from PS2 (Aug. 27.39-42p3) and PS1 (Aug. 29.48-51p4)
k5749 465749 2009 WO6 from CSS (Dec. 17.32-34p3), ZTF (Dec. 17.36p1 & 17.41p1), and ATLAS Haleakala (Dec. 17.60p1 & 17.66p2)
k4797 464797 2004 FZ1 from PS1 (Dec. 17.60-63p4)
j9386 459386 2012 KJ11 from MLS (Dec. 17.08-09p4)
j6651 456651 2007 RT19 from PS1 (Dec. 17.42-46p4)
j2307 452307 Manawydan (1997 XV11) from ZTF (Dec. 17.12p1, 17.17-19p2 & 17.27p1)
j2302 452302 1995 YR1 from MLS (Sept. 15.34-35p4)
j0263 450263 2003 WD158 from ATLAS Mauna Loa (Dec. 17.36-41p4)
i8818 448818 2011 UU20 from ATLAS Haleakala (Feb. 21.37-39p4) and ATLAS Mauna Loa (Feb. 23.36-38p4)
i3837 443837 2000 TJ1 from PS1 (Sept. 19.45-49p4) and ATLAS Haleakala (Oct. 15.36-38p4)
h8902 438902 2009 WF104 from ZTF (Dec. 13.33p1, 13.39p1, 13.45-49p2, 17.35-37p3 & 17.43p1), CSS (Dec. 17.29p2), and MLS (Dec. 17.36-38p4)
h8452 438452 2007 AS12 from PS1 (Jan. 23.37-40p4)
h7316 437316 2013 OS3 from CSS (Jan. 24.26-28p4 & 27.27-28p3)
h6324 436324 2010 GZ6 from CSS (April 2.37-38p4 & 13.36-38p4) and PS2 (April 2.47-50p4)
h6030 436030 2009 JO2 from ATLAS Haleakala (April 19.61-63p4), CSS (April 30.42-43p4), ATLAS Mauna Loa (April 30.45-51p4), and PS2 (April 30.48-50p3)
h3992 433992 2000 HD74 from PS2 (May 12.38-41p8), ATLAS Haleakala (May 12.58-60p3 & 13.45-49p4), MLS (May 13.39-41p4), and ATLAS Mauna Loa (May 14.47-50p3)
g8086 428086 2006 NM from ATLAS Mauna Loa (May 14.59-62p4), PS1 (Nov. 26.37-40p4), and ATLAS Haleakala (Dec. 17.33-35p4)
g0302 420302 2011 XZ1 from PS1 (June 23.45-49p4)
f8797 418797 2008 VF from ATLAS Mauna Loa (Oct. 20.41-48p4) and PS2 (Nov. 16.21-25p4)
f7217 417217 2005 YS from ATLAS Haleakala (Dec. 17.28-30p4)
f6591 416591 2004 LC2 from PS2 (Jan. 28.45-49p7)
f6002 416002 2002 BN from ATLAS Mauna Loa (Jan. 21.35-38p4)
f5711 415711 1998 WT7 from ATLAS Haleakala (June 5.36-39p4)
f5029 415029 2011 UL21 from ATLAS Haleakala (Dec. 17.37-38p4)
f4903 414903 2010 XT45 from ATLAS Mauna Loa (Dec. 17.33-35p4)
f3989 413989 2007 EL88 from ATLAS Mauna Loa (April 10.36-38p4 & 23.29-30p3) and PS2 (April 12.29-31p2)
f1165 411165 2010 DF1 from ATLAS Haleakala (Aug. 25.53-56p4) and ATLAS Mauna Loa (Aug. 27.52-58p4)
d4783 394783 2008 HD3 from ATLAS Mauna Loa (May 3.37-39p4)
c2625 382625 2002 PC130 from MLS (Aug. 13.36-38p4), PS2 (Aug. 19.37-40p4 & 26.34-38p4), PS1 (Dec. 2.24-26p3), and ATLAS Haleakala (Dec. 17.27-29p4)
c0929 380929 2006 HU30 from ATLAS Haleakala (Oct. 23.47-52p6 & Nov. 5.36-40p4)
c0359 380359 2002 TN30 from PS2 (Nov. 3.59-63p4), PS1 (Nov. 14.59-63p3 & Dec. 9.60-64p4), ZTF (Dec. 15.47-51p2, 17.46p2 & 17.51-53p2), and CSS (Dec. 17.41-42p4)
c0128 380128 1997 WB21 from PS1 (July 18.55-59p4), PS2 (July 23.51-55p4 & Aug. 13.59-62p3), and ATLAS Mauna Loa (Aug. 12.55p3 & 12.63p1)
b6848 376848 2001 RY47 from PS2 (Oct. 22.42-46p4) and MLS (Dec. 17.12-14p4)
Z8453 358453 2007 EH88 from ATLAS Mauna Loa (Dec. 11.23-25p3)
Z4952 354952 2006 FJ9 from ATLAS Haleakala (May 13.56-58p4)
Z1545 351545 2005 TE15 from MLS (Dec. 17.45-46p4 at G=21.65-22.35)
Z1370 351370 2005 EY from ZTF (Dec. 15.35p1 & 15.43-45p3)
Z1331 351331 2004 XH29 from PS1 (Dec. 17.32-35p4)
Y9074 349074 2007 BM8 from MLS (Dec. 17.43-44p4)
X9715 339715 2005 SS4 from MLS (Dec. 17.23-25p4)
X3555 333555 2005 VY17 from PS1 (April 10.54-57p3, 12.53-55p3 & May 4.47-51p4), PS2 (May 3.37-41p4 & 12.42-46p4), ATLAS Haleakala (May 11.39-41p3), and ATLAS Mauna Loa (May 13.39-43p4)
V6695 316695 1996 TE9 from ATLAS Mauna Loa (Sept. 23.37-38p4), PS1 (Oct. 15.25-28p4), ATLAS Haleakala (Oct. 16.37-39p4), and PS2 (Oct. 20.22-24p3)
V5098 315098 2007 EX from ATLAS Mauna Loa (May 14.24-26p4)
V3552 313552 2003 BX33 from PS1 (Dec. 17.59-62p4)
V3548 313548 2003 BL1 from MLS (Dec. 17.49-51p4)
V3276 313276 2002 AX1 from MLS (Dec. 17.51-53p4)
U7493 307493 2002 XP90 from CSS (Dec. 17.45-47p4) and MLS (Dec. 17.51-53p4)
U3262 303262 2004 RJ84 from PS1 (Sept. 18.52-58p4 & 20.50-54p4)
T2165 292165 2006 SC6 from ATLAS Haleakala (June 15.55-60p4) and ATLAS Mauna Loa (June 18.44-46p4)
R6409 276409 2002 YN2 from CSS (Dec. 17.51p1)
R5714 275714 2000 YH4 from ATLAS Mauna Loa (Dec. 17.32-34p4)
Q7494 267494 2002 JB9 from SONEAR (June 2.26-27p3)
P0577 250577 2005 AC from CSS (Jan. 28.54p3)
O8926 248926 2006 WZ2 from ATLAS Mauna Loa (Jan. 18.52-55p4, 22.39-40p3, 22.46-47p3 & 26.54-56p6) and ATLAS Haleakala (Jan. 20.60-62p4 & 28.48-50p4)
O1596 241596 1998 XM2 from PS1 (Dec. 17.48-51p4)
M5586 225586 2000 WS67 from MLS (Dec. 17.45-46p3)
L0012 210012 2006 KT1 from CSS (May 14.32-33p4)
K3015 203015 1999 YF3 from PS2 (Jan. 21.48-53p4)
G3902 163902 2003 SW222 from ATLAS Haleakala (Dec. 17.36-38p4)
G3364 163364 2002 OD20 from Castelmartini Obs. (Nov. 23.94p3)
G3348 163348 2002 NN4 from ATLAS Mauna Loa (June 4.57-61p4 & 11.49-51p4), Steven M. Tilley via iTelescope Obs. Siding Spring (June 4.80-82p4), SONEAR (June 13.03-04p3), and PS2 (June 17.38-40p4)
G3243 163243 2002 FB3 from CSS (May 14.16-18p4) and ATLAS Haleakala (May 14.24-26p4)
G2173 162173 Ryugu (1999 JU3) from PS1 (Nov. 5.31-35p4 & 13.30-32p3) and ATLAS Mauna Loa (Dec. 9.27-31p8)
G2080 162080 1998 DG16 from ATLAS Mauna Loa (Feb. 23.37-40p4)
G2039 162039 1996 JG from MLS (Dec. 17.34-35p4)
F9929 159929 2005 UK from ATLAS Mauna Loa (May 11.29-31p4) and ATLAS Haleakala (May 13.30-34p3)
F9928 159928 2005 CV69 from PS2 (March 10.62-64p3)
F9402 159402 1999 AP10 from ATLAS Mauna Loa (Oct. 3.37-40p4), ATLAS Haleakala (Oct. 5.36-38p4, Dec. 17.60p1 & 17.66p2), PS2 (Oct. 9.22-24p2), and CSS (Dec. 17.32-34p4)
F5140 155140 2005 UD from MLS (Dec. 17.18-20p4)
F4993 154993 2005 EA94 from ATLAS Haleakala (Feb. 21.57-59p4 & 21.67p1)
F4658 154658 2004 FA18 from MLS (Dec. 17.51-53p4)
F4330 154330 2002 VX94 from CSS (Dec. 17.14-16p4)
F4302 154302 2002 UQ3 from CSS (Dec. 7.12-14p4)
F4278 154278 2002 TB9 from MLS (May 12.14-15p4)
F2978 152978 2000 GJ147 from CSS (Dec. 17.14-16p3) and MLS (Dec. 17.21-23p4)
F2756 152756 1999 JV3 from ATLAS Haleakala (May 13.51-52p3)
E5656 145656 4788 P-L from ATLAS Haleakala (May 13.59-62p4)
E4411 144411 2004 EW9 from SONEAR (May 31.98-99p2)
E3651 143651 2003 QO104 from MLS (Dec. 17.32-33p3)
E1053 141053 2001 XT1 from ATLAS Haleakala (May 13.36-39p4) and ATLAS Mauna Loa (May 14.36-38p4)
E1052 141052 2001 XR1 from MLS (Dec. 17.14-16p4)
D8893 138893 2000 YH66 from MLS (Dec. 17.25-27p4)
D8859 138859 2000 WN63 from MLS (Dec. 17.49-51p4)
D8852 138852 2000 WN10 from ATLAS Haleakala (Nov. 16.36-41p4 & 20.36-38p4)
D8847 138847 2000 VE62 from ATLAS Mauna Loa (May 11.27-29p4 & 12.27-31p4), CSS (May 14.21-22p4), and ATLAS Haleakala (May 14.25-28p4)
D7805 137805 1999 YK5 from MLS (Dec. 17.06-07p4)
D7199 137199 1999 KX4 from PS1 (April 16.56-58p3 & May 2.43-46p4)
D7170 137170 1999 HF1 from CSS (May 13.44-46p4)
D7108 137108 1999 AN10 from PS1 (July 31.52-54p4 & Aug. 1.54-57p3) and PS2 (Aug. 12.47-50p3)
D7099 137099 1998 YW3 from MLS (Dec. 17.38-40p4)
A6589 106589 2000 WN107 from PS1 (June 20.35-39p4)
A5140 105140 2000 NL10 from MLS (Dec. 17.06-07p4)
A3067 103067 1999 XA143 from PS1 (Jan. 27.35-38p2)
99935 99935 2002 AV4 from PS1 (April 27.37-39p3), ATLAS Haleakala (May 12.37-40p4), SONEAR (May 13.09p3), ATLAS Mauna Loa (May 14.34-36p4), CSS (Dec. 17.35-36p4), and MLS (Dec. 17.42-44p4)
90367 90367 2003 LC5 from CSS (May 13.24-26p3)
90147 90147 2002 YK14 from ATLAS Mauna Loa (Dec. 7.62-65p3 & 11.61-63p4) and ATLAS Haleakala (Dec. 9.60-62p3 & 17.49-50p4)
88188 88188 2000 XH44 from ZTF (Dec. 13.45-47p2, 17.22p1 & 17.33-36p2), CSS (Dec. 17.23-25p4), and ATLAS Haleakala (Dec. 17.37-41p4)
86667 86667 2000 FO10 from ATLAS Mauna Loa (May 3.37-38p3, 11.38-41p4, 12.38-40p3 & 16.36-38p4), PS2 (May 12.29-31p3), CSS (May 14.30-31p4), and ATLAS Haleakala (May 14.35-40p4 & 18.37-40p4)
86450 86450 2000 CK33 from ATLAS Mauna Loa (Jan. 7.21-23p4) and ATLAS Haleakala (Jan. 18.37-38p3 & Dec. 14.62-65p4)
85989 85989 1999 JD6 from ATLAS Mauna Loa (July 11.57-59p4)
85275 85275 1994 LY from SONEAR (Aug. 14.03p3)
85184 85184 1991 JG1 from CSS (May 14.36-38p4)
66272 66272 1999 JW6 from ATLAS Haleakala (Dec. 8.37-40p3 & 17.32-34p4) and PS2 (Dec. 12.37-41p3)
66253 66253 1999 GT3 from PS2 (July 3.40-44p4)
66251 66251 1999 GJ2 from CSS (May 14.32-34p4)
66008 66008 1998 QH2 from PS2 (Sept. 22.35-38p4)
53435 53435 1999 VM40 from PS1 (Dec. 11.59-63p4), CSS (Dec. 17.30-31p4), and ATLAS Haleakala (Dec. 17.51-54p4)
53430 53430 1999 TY16 from MLS (Dec. 17.08-09p4)
52768 52768 1998 OR2 from ATLAS Mauna Loa (April 14.36-38p4)
40267 40267 1999 GJ4 from ATLAS Mauna Loa (Feb. 8.25-27p4 & 12.37-39p3)
36284 36284 2000 DM8 from ATLAS Haleakala (Dec. 17.19-21p4)
35107 35107 1991 VH from PS2 (Jan. 29.48-52p2) and MLS (Feb. 14.36-38p4)
25330 25330 1999 KV4 from CSS (May 13.14-16p4)
23187 23187 2000 PN9 from SATINO-1 (Sept. 3.84-85p3)
21374 21374 1997 WS22 from PS1 (Dec. 7.48-53p4 & 11.59-63p4), ZTF (Dec. 13.44-47p3, 15.38-44p5 & 17.39-40p2), CSS (Dec. 17.28-30p4), and ATLAS Haleakala (Dec. 17.50-53p7)
20460 20460 Robwhiteley (1999 LO28) from MLS (Dec. 17.08-09p4)
19764 19764 2000 NF5 from MLS (May 15.46-47p4)
18172 18172 2000 QL7 from PS1 (Feb. 3.37-40p4) and ATLAS Mauna Loa (May 11.25-27p4)
10115 10115 1992 SK from MLS (Dec. 17.18-20p4)
09400 9400 1994 TW1 from CSS (May 13.17-18p4) and ATLAS Haleakala (May 14.25-27p4)
09202 9202 1993 PB from Campo dos Amarais Obs. (July 27.12-16p3)
09162 9162 Kwiila (1987 OA) from MLS (July 28.45-47p4) and ATLAS Mauna Loa (July 28.54-55p4)
07753 7753 1988 XB from Drebach Obs. (Dec. 17.96p3)
06569 6569 Ondaatje (1993 MO) from PS1 (July 18.42-45p4)
06047 6047 1991 TB1 from ATLAS Mauna Loa (May 11.26-28p4)
05863 5863 Tara (1983 RB) from PS1 (Dec. 17.37-41p8)
05645 5645 1990 SP from PS2 (Oct. 3.57-61p4), ATLAS Haleakala (Oct. 4.60-65p4, 7.60-64p4, 11.61-64p3 & 16.61-64p3), and ATLAS Mauna Loa (Oct. 6.60-64p5)
05587 5587 1990 SB from ATLAS Mauna Loa (Dec. 17.35-36p3)
04953 4953 1990 MU from ATLAS Mauna Loa (Dec. 8.25-27p4)
04055 4055 Magellan (1985 DO2) from ATLAS Mauna Loa (May 12.58-61p4)
03691 3691 Bede (1982 FT) from PS1 (Aug. 14.45-49p4)
03360 3360 Syrinx (1981 VA) from ZTF (Dec. 13.34-36p3 & 15.34p2)
02212 2212 Hephaistos (1978 SB) from PS1 (Dec. 17.32-35p4)
01866 1866 Sisyphus (1972 XA) from ATLAS Haleakala (May 11.29-31p4), ATLAS Mauna Loa (May 13.24-26p4), and CSS (May 15.14-16p4)
01685 1685 Toro (1948 OA) from ATLAS Haleakala (Aug. 7.60-63p3) and ATLAS Mauna Loa (Aug. 9.59-63p4)

MPEC 2020-Y41 - "08:25 UT" - 2020 YO

K20Y00O 2020 YO (Earth MOID=1.2 LD, H=29.47 ~4m) was picked up at 0836 UT on 17 Dec. by MLS, observing it at Dec. 17.36-37p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 17.45-46p4) and Schwarzschild Obs./code 1 (Dec. 17.87p4 at V=22.0-22.3).

MPEC 2020-Y40 - "08:24 UT" - 2020 YN

K20Y00N 2020 YN (risk listed, Earth MOID=0.3 LD, H=27.36 ~11m, close passer) was picked up at 0602 UT on 17 Dec. by MLS, observing it at Dec. 17.25-26p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 17.28-29p4 & 17.36p3), Schwarzschild Obs./code 1 (Dec. 17.75p4), Schiaparelli Obs. (Dec. 17.90-91p2), and ARO Westfield (Dec. 18.06-07p2).

MPEC 2020-Y39 - "08:23 UT" - 2020 YM

K20Y00M 2020 YM (small asteroid, H=27.15 ~13m) was picked up at 0808 UT on 17 Dec. by MLS, observing it at Dec. 17.34-36p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 17.45p3 & 18.25-26p3), Schwarzschild Obs./code 1 (Dec. 17.83p4 at V=22.6-23.8), and ARO Westfield (Dec. 18.29p2).

MPEC 2020-Y38 - "08:21 UT" - 2020 YL

K20Y00L 2020 YL (risk listed, H=26.73 ~15m) was picked up at 0605 UT on 17 Dec. by MLS, observing it at Dec. 17.25-27p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 17.29p4 & 17.37p4), Schwarzschild Obs./code 1 (Dec. 17.75-76p3), Schiaparelli Obs. (Dec. 17.92-94p2), and ARO Westfield (Dec. 18.09-10p4).

MPEC 2020-Y37 - "08:21 UT" - 2020 YK

K20Y00K 2020 YK (borderline-small, i=39.0°, H=21.86 ~144m) was picked up at 0457 UT on 16 Dec. by MLS, observing it at Dec. 16.21-22p4. This detection was confirmed by CSS-Kuiper (Dec. 16.31p4 at G=20.98-22.28 & 17.13-14p3 at G=21.50-57), Schwarzschild Obs./code 1 (Dec. 17.86p3 at V=22.6-23.2), and ARO Westfield (Dec. 18.11-12p3 at V=21.8-22.2).

MPEC 2020-Y36 - "08:20 UT" - 2020 YJ

K20Y00J 2020 YJ (small asteroid, H=23.34 ~73m) was picked up at 0756 UT on 16 Dec. by MLS, observing it at Dec. 16.33-34p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 16.41p3, 17.31p4 & 18.24p2), Sandlot Obs. (Dec. 17.40-43p3), Schwarzschild Obs./code 1 (Dec. 17.88-89p3), and ARO Westfield (Dec. 18.27-28p3).

MPEC 2020-Y35 - "08:19 UT" - 2020 YH

K20Y00H 2020 YH (small asteroid, H=22.15 ~126m) was picked up at 0146 UT on 16 Dec. by MLS, observing it at Dec. 16.07-09p3. This detection was confirmed by CSS-Kuiper (Dec. 16.17-18p4), PS1 (Dec. 16.24p1), Steward Mt. Lemmon Sta. (Dec. 17.06p3), Schwarzschild Obs./code 1 (Dec. 17.72p3 at V=21.8-22.1), and ARO Westfield (Dec. 17.99-01p4).

MPEC 2020-Y34 - "08:17 UT" - 2020 XC7

K20X07C 2020 XC7 (H=20.69 ~246m) was picked up at 0731 UT on 15 Dec. by PS1, observing it at Dec. 15.31-35p4. This detection was confirmed by Visnjan Obs. (Dec. 15.78-80p3), Holmes/CTIO (Dec. 17.05-06p3), Steward Mt. Lemmon Sta. (Dec. 17.09p4), Schwarzschild Obs./code 1 (Dec. 17.81-82p3 at V=22.2-6), and ARO Westfield (Dec. 18.05-06p2).

MPEC 2020-Y33 - "08:17 UT" - 2020 XB7

K20X07B 2020 XB7 (risk listed, Earth MOID=7.2 LD, H=24.29 ~47m, close passer) was picked up at 0736 UT on 15 Dec. by PS1, observing it at Dec. 15.32-35p3 at w=22.35-65. This detection was confirmed by Holmes/CTIO (Dec. 16.11-14p3 at G=22.2-4 & 17.08-10p3 at G=22.3-6), Spacewatch 1.8m (Dec. 17.23-27p2), and ARO Westfield (Dec. 18.07-08p2 at V=22.0-22.3).

Observers on 18 December '20

A total of 34 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 13 in MPECs 2020-Y33, 2020-Y34, 2020-Y35, 2020-Y36, 2020-Y37, 2020-Y38, 2020-Y39, 2020-Y40, 2020-Y42, 2020-Y45 & 2020-Y46 -- 2020 YT, 2020 YS, 2020 YN, 2020 YM, 2020 YL, 2020 YK, 2020 YJ, 2020 YH, 2020 YG, 2020 YF, 2020 YE, 2020 XC7, 2020 XB7
`T05`	ATLAS Haleakala in Hawaii, 64 in MPEC 2020-Y42 -- 2020 XC4, 2020 WA5, 2018 GX4, 2016 ED85, 2013 UX14, 2012 XE133, 2011 GO27, 2008 CZ118, 2007 TG8, 2007 CH15, 2006 NL, 2004 RF84, 2004 AC, 2003 YJ, 2002 GZ8, 99942, 99935, 90147, 88188, 86667, 86450, 66272, 539940, 53435, 531899, 525364, 505093, 501647, 500094, 495615, 465749, 448818, 443837, 436030, 433992, 428086, 417217, 415711, 415029, 411165, 382625, 380929, 36284, 354952, 333555, 316695, 292165, 248926, 21374, 163902, 163243, 159929, 159402, 154993, 152756, 145656, 141053, 138852, 138847, 9400, 5645, 2102, 1866, 1685
`T08`	ATLAS Mauna Loa in Hawaii, 59 in MPEC 2020-Y42 -- 2020 ST1, 2017 VT12, 2016 YM, 2016 ED85, 2014 UR116, 2012 DP8, 2011 GD60, 2006 NL, 2004 AC, 2003 YJ, 2001 SG286, 99942, 99935, 90147, 86667, 86450, 85989, 539940, 52768, 500094, 497094, 495615, 450263, 448818, 441987, 436030, 433992, 428086, 418797, 416002, 414903, 413989, 411165, 40267, 394783, 380128, 358453, 333555, 316695, 315098, 292165, 275714, 248926, 18172, 163348, 162173, 162080, 159929, 159402, 141053, 138847, 9162, 6047, 5645, 5587, 4953, 4055, 1866, 1685
`V00`	Bok Telescope in Arizona, 1 in MPEC 2020-Y42 -- 2020 XH
`X74`	Campo dos Amarais Obs., 1 in MPEC 2020-Y42 -- 9202
`160`	Castelmartini Obs. in Italy, 2 in MPEC 2020-Y42 -- 2015 BF4, 163364
`703`	Catalina Sky Survey (CSS) in Arizona, 52 in MPECs 2020-Y42 & 2020-Y47 -- 2020 YU, 2020 YF, 2020 XJ3, 2020 WM5, 2020 WA5, 2020 RH3, 2020 RF, 2020 QO4, 2020 QD, 2018 GX4, 2017 UK52, 2015 DE200, 2012 XE133, 2002 GZ8, 2000 KA, 1996 AE2, 99942, 99935, 90367, 88188, 86667, 85184, 66251, 539940, 53435, 512244, 501647, 477524, 468910, 465749, 438902, 437316, 436324, 436030, 380359, 363599, 307493, 276409, 25330, 250577, 21374, 210012, 163243, 159402, 154330, 154302, 152978, 138847, 137170, 9400, 2102, 1866
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 13 in MPECs 2020-Y35, 2020-Y37, 2020-Y42 & 2020-Y46 -- 2020 YT, 2020 YO, 2020 YK, 2020 YH, 2020 XZ, 2020 XM5, 2020 XG5, 2020 XE6, 2020 XC6, 2020 XB5, 2020 WQ3, 2020 OJ8, 2020 AD3
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 30 in MPECs 2020-Y33, 2020-Y34 & 2020-Y42 -- 2020 XY2, 2020 XV6, 2020 XV4, 2020 XV2, 2020 XR3, 2020 XO2, 2020 XN5, 2020 XM5, 2020 XK6, 2020 XK5, 2020 XH4, 2020 XF6, 2020 XE5, 2020 XD4, 2020 XC7, 2020 XB7, 2020 XB, 2020 WZ1, 2020 WT2, 2020 WQ, 2020 VR3, 2020 VE1, 2020 US1, 2020 UK5, 2020 UF7, 2020 TC7, 2020 PD1, 2020 OT6, 2020 BN10, 2019 FJ
`G375`	program code 5 via Discovery Channel Telescope in Arizona, 1 in MPEC 2020-Y42 -- 2020 VV
`113`	Drebach Obs. in Germany, 2 in MPECs 2020-Y42 & 2020-Y47 -- 2020 YU, 7753
Q62`	Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-Y42 -- 163348
`B67`	Mirasteilas Obs. in Switzerland, 8 in MPEC 2020-Y42 -- 2020 WA5, 2020 VM3, 2020 TG4, 2020 RU, 2020 OK5, 2012 XE133, 2012 SA22, 2009 WG104
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 69 in MPECs 2020-Y35, 2020-Y36, 2020-Y37, 2020-Y38, 2020-Y39, 2020-Y40, 2020-Y41, 2020-Y42, 2020-Y43, 2020-Y44, 2020-Y46, 2020-Y47 & 2020-Y48 -- 2020 YV, 2020 YU, 2020 YT, 2020 YP, 2020 YO, 2020 YN, 2020 YM, 2020 YL, 2020 YK, 2020 YJ, 2020 YH, 2020 YE, 2020 XW4, 2020 XP1, 2020 XK1, 2020 XD3, 2020 WW5, 2020 LA2, 2020 BN3, 2019 FM, 2017 XL62, 2016 JN34, 2016 AU65, 2013 XG4, 2010 WT8, 2010 TA178, 2010 KD, 2009 XL8, 2009 WD11, 2007 XB10, 2004 XL29, 2002 TS67, 2000 PQ27, 1997 XE10, 99935, 539940, 53430, 494880, 483547, 459386, 452302, 438902, 433992, 382625, 376848, 351545, 35107, 349074, 339715, 313548, 313276, 307493, 225586, 20460, 19764, 162039, 155140, 154658, 154278, 152978, 143651, 141052, 138893, 138859, 137805, 137099, 105140, 10115, 9162
`C27`	Pallerols Obs. in Spain, 1 in MPEC 2020-Y42 -- 500094
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 69 in MPECs 2020-Y33, 2020-Y34, 2020-Y35, 2020-Y42, 2020-Y43 & 2020-Y45 -- 2020 YS, 2020 YH, 2020 XV4, 2020 XC7, 2020 XB7, 2020 XA4, 2020 VM3, 2020 UV1, 2020 TT7, 2020 ST1, 2020 RR2, 2020 QQ6, 2020 LB3, 2020 FT1, 2018 GV5, 2017 SE19, 2016 ED85, 2015 CV13, 2015 BF4, 2014 JK15, 2014 HP178, 2014 HK2, 2014 CJ14, 2012 DP8, 2010 VU198, 2010 KD, 2010 EC135, 2007 UY1, 2007 CH15, 2004 XP14, 2004 US1, 2000 TU28, 1998 WA2, 99942, 99935, 53435, 505657, 500094, 495615, 494880, 474179, 467963, 465824, 464797, 456651, 443837, 438452, 428086, 420302, 382625, 380359, 380128, 351331, 333555, 316695, 313552, 303262, 241596, 21374, 18172, 162173, 137199, 137108, 106589, 103067, 6569, 5863, 3691, 2212
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 46 in MPECs 2020-Y42, 2020-Y43 & 2020-Y45 -- 2020 YS, 2020 WM5, 2020 TP, 2020 RF, 2018 XZ1, 2017 SE19, 2014 QL433, 2012 SH32, 2012 DP8, 2011 GD60, 2010 KD, 2010 EC135, 2004 XP14, 2003 UG22, 2002 GZ8, 2001 GS2, 2000 TU28, 2000 KA, 86667, 66272, 66253, 66008, 501647, 492143, 482505, 474179, 465824, 436324, 436030, 433992, 418797, 416591, 413989, 382625, 380359, 380128, 376848, 35107, 333555, 316695, 203015, 163348, 159928, 159402, 137108, 5645
`104`	San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2020-Y48 -- 2020 YV
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2020-Y36 -- 2020 YJ
`C95`	SATINO-1 in France, 1 in MPEC 2020-Y42 -- 23187
`204`	Schiaparelli Obs. in Italy, 2 in MPECs 2020-Y38 & 2020-Y40 -- 2020 YN, 2020 YL
`0331`	program code 1 via Schwarzschild Obs. in Germany, 26 in MPECs 2020-Y34, 2020-Y35, 2020-Y36, 2020-Y37, 2020-Y38, 2020-Y39, 2020-Y40, 2020-Y41, 2020-Y42, 2020-Y44, 2020-Y46, 2020-Y47 & 2020-Y48 -- 2020 YV, 2020 YU, 2020 YT, 2020 YP, 2020 YO, 2020 YN, 2020 YM, 2020 YL, 2020 YK, 2020 YJ, 2020 YH, 2020 XY4, 2020 XX3, 2020 XS5, 2020 XS3, 2020 XQ2, 2020 XJ3, 2020 XH6, 2020 XG3, 2020 XD6, 2020 XD2, 2020 XC7, 2020 XA3, 2020 SO, 2020 MZ3, 2018 XE4
`W88!`	W.F. Cashwell in Nevada via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-Y42 -- 2011 GD60
`Y00`	SONEAR in Brazil, 7 in MPEC 2020-Y42 -- 2020 ND, 99935, 85275, 495615, 267494, 163348, 144411
`587`	Sormano Obs. in Italy, 1 in MPEC 2020-Y42 -- 2020 YC
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2020-Y42 -- 2020 WH2, 2020 PD1, 2020 GN3, 2003 YJ
`291`	Spacewatch 1.8m telescope in Arizona, 2 in MPECs 2020-Y33 & 2020-Y42 -- 2020 XB7, 2020 MZ3
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 50 in MPECs 2020-Y34, 2020-Y35, 2020-Y36, 2020-Y38, 2020-Y39, 2020-Y40, 2020-Y41, 2020-Y42, 2020-Y43, 2020-Y44, 2020-Y46, 2020-Y47 & 2020-Y48 -- 2020 YV, 2020 YU, 2020 YT, 2020 YP, 2020 YO, 2020 YN, 2020 YM, 2020 YL, 2020 YJ, 2020 YH, 2020 XZ4, 2020 XZ3, 2020 XW5, 2020 XW4, 2020 XV6, 2020 XV4, 2020 XU6, 2020 XQ6, 2020 XP2, 2020 XO2, 2020 XN2, 2020 XN1, 2020 XL3, 2020 XK, 2020 XJ, 2020 XH4, 2020 XD6, 2020 XC7, 2020 XC5, 2020 XB6, 2020 XB1, 2020 XA6, 2020 WW4, 2020 WT2, 2020 WS5, 2020 WM5, 2020 WL1, 2020 WJ4, 2020 WH2, 2020 WA5, 2020 VN3, 2020 VC7, 2020 UX3, 2020 TM4, 2020 TJ8, 2020 OC7, 2020 LD3, 2020 GC2, 2010 QA5, 2010 KD
`J22`	Tacande Obs. in the Canary Islands, 1 in MPEC 2020-Y42 -- 2020 BR
`K62`	Teplice Obs. in the Czech Republic, 1 in MPEC 2020-Y42 -- 2020 RD2
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-Y42 -- 2020 XA6
`L01`	Visnjan Obs. in Croatia, 1 in MPEC 2020-Y34 -- 2020 XC7
`N88`	Xingming Obs. #3, 1 in MPEC 2020-Y47 -- 2020 YU
`I41`	Zwicky Transient Facility (ZTF) in southern California, 11 in MPEC 2020-Y42 -- 2020 XN1, 2020 VQ6, 2013 YS2, 88188, 465749, 452307, 438902, 380359, 351370, 21374, 3360

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 18 December '20

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL and NEODyS listings is 100 years, and both post impact solutions beyond that for some special objects.
For the latest official risk assessments, and for explanations of the terminology, see the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.
0000NNN000 Object	Risk Monitor	When Noted UTC	0000T0000 Year Range	VI #	000NN00 Prob Cum	T0000 PS Cum	T0000 PS Max	T S	Notes for Today's Latest Risk Assessments

2020 YN	JPL Sentry	1710	2046-2047	4	5.30971e-05	-4.99	-5.01	0	JPL: Computed at 01:36 today Pacific time based on 16 observations spanning .81448 days (2020-Dec-17.25699 to 2020-Dec-18.071473). Diameter approximately 0.011 km. from weighted mean H=27.37.
2020 YN	NEODyS	1710	2046-2055	7	3.86e-05	-5.12	-5.14	0	NEODyS: "Based on 18 optical observations (of which 2 are rejected as outliers) from 2020-12-17.253 to 2020-12-18.072."

2020 YL	NEODyS	1710	2097	1	1.35e-07	-8.00	-8.0	0	NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2020-12-17.255 to 2020-12-18.100."

2020 YF	JPL Sentry	1710	2076-2076	1	9.719e-08	-9.25	-9.25	0	JPL #2 for the day: Computed at 07:35 today Pacific time based on 36 observations spanning .90360 days (2020-Dec-17.216483 to 2020-Dec-18.120085). Diameter approximately 0.005 km. from weighted mean H=29.05.

2020 XB7	JPL Sentry	1710	2120-2120	1	4.281e-08	-7.43	-7.43	0	JPL: Computed at 01:29 today Pacific time based on 13 observations spanning 2.7673 days (2020-Dec-15.317155 to 2020-Dec-18.084429). Diameter approximately 0.047 km. from weighted mean H=24.27.
2020 XB7	NEODyS	1710	2120	1	9.51e-08	-7.10	-7.1	n/a	NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2020-12-15.318 to 2020-12-18.085."

2020 XV6	NEODyS	1901	2099-2105	6	9.13e-07	-4.64	-5.02	0	NEODyS: "Based on 75 optical observations (of which 1 are rejected as outliers) from 2020-12-15.121 to 2020-12-18.225."
2020 XV6	JPL Sentry	1710	2099-2102	3	5.702e-07	-4.83	-5.13	0	JPL: Computed at 07:12 today Pacific time based on 75 observations spanning 3.1036 days (2020-Dec-15.120177 to 2020-Dec-18.223817). Diameter approximately 0.094 km. from weighted mean H=22.78.

2020 XU6	NEODyS	1901	2034-2104	20	7.38e-08	-5.46	-5.93	0	NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2020-12-14.363 to 2020-12-18.376."
2020 XU6	JPL Sentry	1710	2031-2120	207	2.9997417e-06	-3.94	-4.94	0	JPL: Computed at 07:16 today Pacific time based on 17 observations spanning 4.0133 days (2020-Dec-14.362132 to 2020-Dec-18.375466). Diameter approximately 0.181 km. from weighted mean H=21.34.

2020 XA6	NEODyS	1901	2057-2073	8	1.34e-06	-5.16	-5.34	0	NEODyS: "Based on 71 optical observations (of which 1 are rejected as outliers) from 2020-12-14.125 to 2020-12-18.228."
2020 XA6	JPL Sentry	1710	2062-2073	5	4.5483827e-06	-4.60	-4.87	0	JPL: Computed at 07:12 today Pacific time based on 71 observations spanning 4.1033 days (2020-Dec-14.124162 to 2020-Dec-18.227461). Diameter approximately 0.053 km. from weighted mean H=24.05.

2020 XK5	JPL Sentry	1710	R E M O V E D						JPL: Risk listing removed at 1509 UTC today

2020 XX3	NEODyS	1901	2094-2113	5	6.17e-09	-10.27	-10.28	0	NEODyS: "Based on 85 optical observations (of which 0 are rejected as outliers) from 2020-12-10.277 to 2020-12-17.746."
2020 XX3	JPL Sentry	1710	2086-2115	4	7.9124e-07	-8.16	-8.22	0	JPL #2 for the day: Computed at 07:43 today Pacific time based on 85 observations spanning 7.4688 days (2020-Dec-10.276407 to 2020-Dec-17.74524). Diameter approximately 0.007 km. from weighted mean H=28.50.

2020 XK1	JPL Sentry	1710	R E M O V E D						JPL: Risk listing removed at 1437 UTC today
2020 XK1	NEODyS	1901	2109	1	4.91e-08	-10.43	-10.43	0	NEODyS: "Based on 25 optical observations (of which 3 are rejected as outliers) from 2020-12-06.146 to 2020-12-07.371."

2020 VV	NEODyS	1901	2044-2120	433	4.0e-03	-3.64	-4.2	n/a	NEODyS: "Based on 76 optical observations (of which 1 are rejected as outliers) from 2020-10-17.215 to 2020-12-17.328."
2020 VV	JPL Sentry	1710	2033-2111	166	0.00155517069	-3.93	-4.37	0	JPL: Computed at 06:46 today Pacific time based on 76 observations spanning 61.112 days (2020-Oct-17.214515 to 2020-Dec-17.326949). Diameter approximately 0.012 km. from weighted mean H=27.25.

2017 UK52	NEODyS	1900	R E M O V E D						-
2017 UK52	JPL Sentry	1710	R E M O V E D						JPL: Risk listing removed at 1448 UTC today

2016 NJ56	JPL Sentry	0100	2036-2036	1	4.032e-09	-8.14	-8.14	0	JPL: Computed at 16:47 April 8th of 2017 Pacific time based on 8 observations spanning 1.0408 days (2016-Jul-06.314709 to 2016-Jul-07.355484). Diameter approximately 0.033 km. from weighted mean H=25.08.

2010 MY112	JPL Sentry	0100	2022-2092	28	1.1329e-08	-4.50	-4.84	0	JPL: Computed at 07:47 Oct. 15th of 2018 Pacific time based on 18 observations spanning 1.5218 days (2010-Jun-23.611671 to 2010-Jun-25.133483). Diameter approximately 0.370 km. from weighted mean H=21.00.

2008 XK	JPL Sentry	0100	2021-2101	86	4.053938e-07	-6.66	-6.82	0	JPL: Computed at 09:53 Dec. 18th of 2019 Pacific time based on 12 observations spanning .08663 days (2008-Dec-02.28019 to 2008-Dec-02.36682). Diameter approximately 0.012 km. from weighted mean H=27.23.

2008 VS4	JPL Sentry	0100	2021-2114	308	5.751628e-07	-5.38	-6.30	0	JPL: Computed at 00:23 April 8th of 2017 Pacific time based on 10 observations spanning .08330 days (2008-Nov-07.413 to 2008-Nov-07.4963). Diameter approximately 0.049 km. from weighted mean H=24.21.

2004 XB45	JPL Sentry	0100	2035-2066	2	4.1472e-07	-6.34	-6.35	0	JPL: Computed at 13:45 April 9th of 2017 Pacific time based on 51 observations spanning 3.5388 days (2004-Dec-13.17846 to 2004-Dec-16.717258). Diameter approximately 0.019 km. from weighted mean H=26.29.

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology on 18 December '20

Times are UTC for when items were noted or added by The Tracking News.

2358	Grabbed MPEC 2020-Y47 - 2020 YU - see above Grabbed MPEC 2020-Y48 - 2020 YV - see above
2230	Grabbed MPEC 2020-Y46 - 2020 YT - see above
1901	Noted that NEODyS has updated its 2020 VV risk assessment - see above Noted that NEODyS has updated its 2020 XA6 risk assessment - see above Noted that NEODyS has updated its 2020 XK1 risk assessment - see above Noted that NEODyS has updated its 2020 XU6 risk assessment - see above Noted that NEODyS has updated its 2020 XV6 risk assessment - see above Noted that NEODyS has updated its 2020 XX3 risk assessment - see above
1900	Noted that NEODyS has removed 2017 UK52 as an impact risk - see above Grabbed MPEC 2020-Y45 - 2020 YS - see above
1710	Noted that JPL Sentry has removed 2017 UK52 as an impact risk - see above Noted that JPL Sentry has updated its 2020 VV risk assessment - see above Noted that JPL Sentry has updated its 2020 XA6 risk assessment - see above Noted that JPL Sentry has posted 2020 XB7 as an impact risk - see above Noted that NEODyS has posted 2020 XB7 as an impact risk - see above Noted that JPL Sentry has removed 2020 XK1 as an impact risk - see above Noted that JPL Sentry has removed 2020 XK5 as an impact risk - see above Noted that JPL Sentry has updated its 2020 XU6 risk assessment - see above Noted that JPL Sentry has updated its 2020 XV6 risk assessment - see above Noted that JPL Sentry has updated its 2020 XX3 risk assessment - see above Noted that JPL Sentry has updated its 2020 YF risk assessment - see above Noted that NEODyS has posted 2020 YL as an impact risk - see above Noted that JPL Sentry has posted 2020 YN as an impact risk - see above Noted that NEODyS has posted 2020 YN as an impact risk - see above Grabbed MPEC 2020-Y33 - 2020 XB7 - see above Grabbed MPEC 2020-Y34 - 2020 XC7 - see above Grabbed MPEC 2020-Y35 - 2020 YH - see above Grabbed MPEC 2020-Y36 - 2020 YJ - see above Grabbed MPEC 2020-Y37 - 2020 YK - see above Grabbed MPEC 2020-Y38 - 2020 YL - see above Grabbed MPEC 2020-Y39 - 2020 YM - see above Grabbed MPEC 2020-Y40 - 2020 YN - see above Grabbed MPEC 2020-Y41 - 2020 YO - see above Grabbed MPEC 2020-Y42 - Daily Orbit Update - see above Grabbed MPEC 2020-Y43 - 2010 KD - see above Grabbed MPEC 2020-Y44 - 2020 YP - see above
0100	Noted that JPL Sentry has updated its 2004 XB45 risk assessment - see above Noted that JPL Sentry has updated its 2008 VS4 risk assessment - see above Noted that JPL Sentry has updated its 2008 XK risk assessment - see above Noted that JPL Sentry has updated its 2010 MY112 risk assessment - see above Noted that JPL Sentry has updated its 2016 NJ56 risk assessment - see above Noted that JPL Sentry has updated its 2020 XX3 risk assessment - see above Noted that JPL Sentry has posted 2020 YF as an impact risk - see above

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