2020-12-16 Tracking News

Contents on 16 December '20

IAU Minor Planet Center
- NEOCP Activity -- 44 listings
- New MPECs -- eighteen MPECs
Observers -- 34 observers
Impact Risk Monitoring -- sixteen objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1241 risk-listed objects, 174 have had news in the last 31 days. Updated at 2301 UTC on 16 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 16 December '20

The MPC's NEO Confirmation Page has 44 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 44 objects listed. Of these, 29 were "one nighters." So far The Tracking News has counted a total of 67 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 16 December '20

Minor Planet Electronic Circulars

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

MPEC 2020-Y01 time-stamped "03:51 UT" - 2020 XB6 - see below
MPEC 2020-Y02 time-stamped "03:56 UT" - 2020 XC6 - see below
MPEC 2020-Y03 time-stamped "04:00 UT" - 2020 XD6 - see below
MPEC 2020-Y04 time-stamped "04:04 UT" - 2020 XE6 - see below
MPEC 2020-Y05 time-stamped "04:07 UT" - 2020 XF6 - see below
MPEC 2020-Y06 time-stamped "04:09 UT" - 2020 XG6 - see below
MPEC 2020-Y07 time-stamped "04:12 UT" - 2020 XH6 - see below
MPEC 2020-Y08 time-stamped "04:14 UT" - 2020 XJ6 - see below
MPEC 2020-Y09 time-stamped "05:20 UT" - 2020 XK6 - see below
MPEC 2020-Y10 time-stamped "12:26 UT" - Daily Orbit Update - see below
MPEC 2020-Y11 time-stamped "13:08 UT" - 2020 XL6 - see below
MPEC 2020-Y12 time-stamped "13:22 UT" - 2020 XM6 - see below
MPEC 2020-Y13 time-stamped "14:15 UT" - 2020 XO6 - see below
MPEC 2020-Y14 time-stamped "14:18 UT" - 2020 XP6 - see below
MPEC 2020-Y15 time-stamped "14:19 UT" - 2020 XQ6 - see below
MPEC 2020-Y16 time-stamped "14:20 UT" - 2020 XR6 - see below
MPEC 2020-Y17 time-stamped "16:23 UT" - 2020 XU6 - see below
MPEC 2020-Y18 time-stamped "21:32 UT" - 2020 XV6

MPEC 2020-Y18 - "21:32 UT" - 2020 XV6

K20X06V 2020 XV6 (risk listed, q=0.186 AU, Earth MOID=1.9 LD, H=22.8 ~93m) was picked up at 0253 UT on 15 Dec. by the Catalina Sky Survey (CSS), observing it at Dec. 15.12-13p2. This detection was confirmed by the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Dec. 15.17p3), Steward Obs. Mt. Lemmon Station (Dec. 15.27p4 & 16.09p4), Mt. John Obs. (Dec. 15.41p4), Galhassin Robotic Telescope (Dec. 15.72p1 & 15.76-80p3), Great Shefford Obs. (Dec. 15.73-75p4), Visnjan Obs. (Dec. 15.77-78p8), Clixby Obs. (Dec. 15.77-78p3), North Obs. (Dec. 15.80-81p3), Dax Obs. (Dec. 15.87-89p3), Farra d'Isonzo Obs. (Dec. 15.89-90p3), AstroColauri Obs. (Dec. 15.92p2), Northolt Branch Obs. (Dec. 15.95-97p2), Tebbutt Obs. (Dec. 16.06-07p4), program code 1 via Schwarzschild Obs. (Dec. 16.68-69p3), Drebach Obs. (Dec. 16.69-70p3), Muensterschwarzach Obs. (Dec. 16.71p3), Salvatore di Giacomo Obs. (Dec. 16.75-78p3), and Dettelbach Vineyard Obs. (Dec. 16.77-78p3).

MPEC 2020-Y17 - "16:23 UT" - 2020 XU6

K20X06U 2020 XU6 (risk listed, Earth MOID=2.5 LD, H=21.37 ~180m) was picked up at 0841 UT on 14 Dec. by the Mt. Lemmon Survey (MLS), observing it at Dec. 14.36-38p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 14.47-48p2 & 15.36-37p2), the Spacewatch 0.9m telescope (Dec. 15.31-33p3), and CSS-Kuiper (Dec. 16.30-32p4).

MPEC 2020-Y16 - "14:20 UT" - 2020 XR6

K20X06R 2020 XR6 (small asteroid, H=23.0 ~85m) was picked up at 0813 UT on 14 Dec. by MLS, observing it at Dec. 14.34-36p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 14.44-45p3 at G=20.82-21.52, 15.29-30p3 at G=21.45-90 & 16.39p2 at G=22.13) and Visnjan Obs. (Dec. 15.87-88p3).

MPEC 2020-Y15 - "14:19 UT" - 2020 XQ6

K20X06Q 2020 XQ6 (small asteroid, q=0.327 AU, H=23.3 ~74m) was picked up at 0958 UT on 14 Dec. by the Bok Telescope, observing it at Dec. 14.42-43p4. This detection was confirmed by MLS (Dec. 14.51p2), Visnjan Obs. (Dec. 14.99-00p5), Steward Mt. Lemmon Sta. (Dec. 15.34-35p4), the Spacewatch 1.8m telescope (Dec. 16.15-17p3), and Tebbutt Obs. (Dec. 16.24-26p2).

MPEC 2020-Y14 - "14:18 UT" - 2020 XP6

K20X06P 2020 XP6 (small asteroid, H=26.2 ~19m) was picked up at 0740 UT on 14 Dec. by MLS, observing it at Dec. 14.32-34p4. This detection was confirmed by CSS-Kuiper (Dec. 14.42-43p4), Visnjan Obs. (Dec. 14.87-88p3), Steward Mt. Lemmon Sta. (Dec. 15.33-38p6 at G=20.30-22.11 & 16.19-20p3 at G=20.05-21.21), and Tebbutt Obs. (Dec. 16.20-22p3).

MPEC 2020-Y13 - "14:15 UT" - 2020 XO6

K20X06O 2020 XO6 (small asteroid, H=25.4 ~28m) was picked up at 0625 UT on 11 Dec. by Pan-STARRS 1 (PS1), observing it at Dec. 11.27-31p4. This detection was confirmed by MLS (Dec. 7.31-32p4 & 16.21-22p4).

MPEC 2020-Y12 - "13:22 UT" - 2020 XM6

K20X06M 2020 XM6 (small asteroid, H=25.83 ~23m) was picked up at 0503 UT on 14 Dec. by MLS, observing it at Dec. 6.28-29p3 at G=21.6-22.4 and 14.21-23p4 at G=21.14-61. This detection was confirmed by CSS-Kuiper (Dec. 14.32-33p3 at G=21.46-22.32 & 16.16-18p4 at G=21.30-72) and Astronomical Research Obs. Westfield (Dec. 15.09-10p3 at V=21.8-22.1).

MPEC 2020-Y11 - "13:08 UT" - 2020 XL6

K20X06L 2020 XL6 (small asteroid, H=25.24 ~30m) was picked up at 0844 UT on 14 Dec. by MLS, observing it at Dec. 6.49-50p3 and 14.36-38p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 14.46-47p3 at G=21.62 & 15.49-50p3 at G=21.58-22.67), Visnjan Obs. (Dec. 15.02-04p3), and CSS-Kuiper (Dec. 16.35-36p2).

<< DOU on 16 December '20 >> MPEC 2020-Y10 - "12:26 UT" - Daily Orbit Update

Observations of risk-listed objects
K20X06E 2020 XE6 (arc=4 days, H=19.8 ~371m) from CSS-Kuiper (Dec. 16.45p4)
K20X06A 2020 XA6 (small asteroid, arc=2 days, H=24.0 ~54m) from Great Shefford Obs. (Dec. 15.78-79p4)
K20X05K 2020 XK5 (small asteroid, Q=4.117 AU, arc=4 days, H=23.7 ~62m) from Spacewatch 0.9m (Dec. 16.23-26p2 at R=22.5-23.5)
K20X04U 2020 XU4 (small asteroid, arc=3 days, H=27.8 ~9m, close passer, NHATS target) from Spacewatch 1.8m (Dec. 15.38-39p3)
K20X04F 2020 XF4 (small asteroid, arc=10 days, H=27.5 ~11m, close passer, NHATS target) from Galhassin RT (Dec. 15.81-88p4) and Great Shefford Obs. (Dec. 15.83-87p8)
K20X03X 2020 XX3 (small asteroid, arc=6 days, H=28.5 ~7m, close passer, NHATS target) from Great Shefford Obs. (Dec. 15.80p4), Northolt Branch Obs. (Dec. 15.88-90p3), Steward Mt. Lemmon Sta. (Dec. 16.12p4), and MLS (Dec. 16.20-22p3)
K20X03E 2020 XE3 (small asteroid, Q=4.456 AU, arc=9 days, H=24.9 ~35m) from Spacewatch 1.8m (Dec. 15.27-29p3 at G=21.9-22.3) and Spacewatch 0.9m (Dec. 16.15-18p2)
K20X00F 2020 XF (small asteroid, arc=12 days, H=26.7 ~15m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (Dec. 16.07-08p3)
K20V00W 2020 VW (small asteroid, arc=13 days, H=28.4 ~7m, close passer, NHATS target) from ARO Westfield (Nov. 6.13-14p2)
K16W00Y 2016 WY (small asteroid, Q=0.992 AU, arc=10 days, H=29.2 ~5m, close passer, NHATS target) from Spacewatch 1.8m (2016 Nov. 25.20-21p2)
Observations of recently (no longer) risk-listed objects
K20X05D 2020 XD5 (arc=5 days, H=20.1 ~323m) from MLS (Dec. 15.48-49p4) and Steward Mt. Lemmon Sta. (Dec. 16.42-43p4)
K20X02Z 2020 XZ2 (small asteroid, arc=9 days, H=22.3 ~117m) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Dec. 16.20-21p3) and Steward Mt. Lemmon Sta. (Dec. 16.27-28p4)
K20X02V 2020 XV2 (small asteroid, Q=4.592 AU, arc=6 days, H=23.5 ~68m) from Holmes/CTIO (Dec. 15.29p2)
K20X01G 2020 XG1 (almost small, i=50.4°, arc=11 days, H=21.8 ~148m) from Spacewatch 1.8m (Dec. 15.31p3) and Steward Mt. Lemmon Sta. (Dec. 16.12p3)
K20W01Q 2020 WQ1 (small asteroid, arc=31 days, H=22.9 ~89m) from Holmes/CTIO (Dec. 15.31p3)
Observations of close-passing objects
K20X06J 2020 XJ6 (arc=2 days, H=27.3 ~12m, NHATS target) from Steward Mt. Lemmon Sta. (Dec. 16.28-30p3)
K20X06H 2020 XH6 (arc=2 days, H=27.1 ~13m) from Schwarzschild Obs./code 1 (Dec. 16.05p2)
K20X05S 2020 XS5 (arc=6 days, H=26.6 ~16m) from Farra d'Isonzo Obs. (Dec. 14.85-86p2)
K20X05G 2020 XG5 (arc=4 days, H=27.0 ~13m, NHATS target) from CSS-Kuiper (Dec. 16.46p3)
K20X04Z 2020 XZ4 (arc=5 days, H=24.6 ~41m, NHATS target) from Steward Mt. Lemmon Sta. (Dec. 16.34-35p3)
K20X04V 2020 XV4 (arc=4 days, H=25.4 ~28m) from Holmes/CTIO (Dec. 15.21-22p4) and Steward Mt. Lemmon Sta. (Dec. 16.17p4)
K20X04C 2020 XC4 (arc=7 days, H=26.0 ~21m, NHATS target) from Clixby Obs. (Dec. 15.80-81p4) and Steward Mt. Lemmon Sta. (Dec. 16.11p4)
K20X03J 2020 XJ3 (arc=7 days, H=25.5 ~27m, NHATS target) from Steward Mt. Lemmon Sta. (Dec. 16.45p4)
K20X01H 2020 XH1 (arc=10 days, H=22.9 ~89m) from ATLAS Haleakala (Dec. 15.35-38p4), Northolt Branch Obs. (Dec. 15.93-94p3), and Steward Mt. Lemmon Sta. (Dec. 16.49p4)
K20X01B 2020 XB1 (arc=10 days, H=26.3 ~19m) from Steward Mt. Lemmon Sta. (Dec. 16.37p3)
K20X00H 2020 XH (arc=12 days, H=24.6 ~41m) from Steward Mt. Lemmon Sta. (Dec. 16.39-40p4)
K20W05Z 2020 WZ5 (arc=22 days, H=26.2 ~19m) from Steward Mt. Lemmon Sta. (Dec. 16.45-46p4)
K20W05W 2020 WW5 (arc=26 days, H=28.6 ~6m, NHATS target) from MLS (Dec. 16.23-24p3)
K20V04P 2020 VP4 (arc=9 days, H=27.7 ~10m, NHATS target) from Galhassin RT (Nov. 14.76-80p4 at G=18.0-25.3)
K20O05K 2020 OK5 (arc=155 days, H=25.4 ~28m, NHATS target) from PS1 (Dec. 15.53-56p4)
K12UH1K 2012 UK171 (arc=3 opp, H=24.4 ~45m, NHATS target) from MLS (Dec. 15.36-37p4)
o1647 501647 2014 SD224 from the Zwicky Transient Facility (ZTF) (Dec. 13.34-37p2 & 13.43p2)
Observation campaigns (NHATS targets, radar support)
K20X05Z 2020 XZ5 (arc=56 days, H=25.7 ~25m, NHATS) from PS1 (Oct. 20.48-52p4 at G=22.55-23.19, 22.40-44p4 at G=22.58-87 & Dec. 12.42-47p4 at G=21.04-80) and Pan-STARRS 2 (PS2) (Nov. 20.38-39p2)
K20X04J 2020 XJ4 (arc=96 days, H=24.7 ~39m, NHATS) from ARO Westfield (Dec. 14.99-02p3 at V=22.1-2)
K20X03W 2020 XW3 (arc=6 days, H=25.7 ~25m, NHATS) from Steward Mt. Lemmon Sta. (Dec. 15.54p3)
K20X02O 2020 XO2 (arc=8 days, H=24.7 ~39m, NHATS) from Holmes/CTIO (Dec. 16.19-20p3)
K20X00W 2020 XW (arc=11 days, H=24.6 ~41m, NHATS) from Steward Mt. Lemmon Sta. (Dec. 16.21-22p4)
K20W03K 2020 WK3 (arc=23 days, H=25.0 ~34m, NHATS) from Mt. John Obs. (Dec. 15.59-60p5)
K20W03F 2020 WF3 (arc=25 days, H=23.7 ~62m, NHATS) from Spacewatch 0.9m (Dec. 16.35-36p3)
K20S00O 2020 SO (Q=0.988 AU, arc=32 days, H=28.5 ~7m, NHATS) from ATLAS Haleakala (Dec. 15.27-30p4) and Steward Mt. Lemmon Sta. (Dec. 16.09-10p4)
K16U31R 2016 UR31 (arc=2 opp, H=24.7 ~39m, NHATS) from Spacewatch 1.8m (2016 Nov. 7.49-50p2)
K13Y02S 2013 YS2 (arc=2 opp, H=23.6 ~65m, NHATS) from MLS (Dec. 15.28-29p4)
K11G60D 2011 GD60 (arc=4 opp, H=21.8 ~148m, NHATS) from CSS (Dec. 15.23-25p3)
K06Y00F 2006 YF (arc=6 opp, H=20.7 ~245m, NHATS) from MLS (Dec. 15.38-40p3)
04179 4179 Toutatis (1989 AC) (radar) from ATLAS Haleakala (Dec. 15.20-22p8)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20X06K 2020 XK6 (arc=2 days, H=25.2 ~31m) from CSS-Kuiper (Dec. 16.24p3)
K20X06F 2020 XF6 (Q=4.272 AU, arc=5 days, H=22.1 ~129m) from CSS-Kuiper (Dec. 16.38-39p4 at G=22.04-31)
K20X06D 2020 XD6 (arc=2 days, H=25.2 ~31m) from Tebbutt Obs. (Dec. 16.14-15p3)
K20X06B 2020 XB6 (i=55.3°, arc=2 days, H=22.8 ~93m) from AstroColauri Obs. (Dec. 15.86p3)
K20X05N 2020 XN5 (arc=4 days, H=22.3 ~117m) from Steward Mt. Lemmon Sta. (Dec. 16.23-24p4) and CSS-Kuiper (Dec. 16.25p4 at G=21.34-22.26)
K20X04H 2020 XH4 (arc=5 days, H=23.1 ~81m) from ARO Westfield (Dec. 11.25p2) and Holmes/CTIO (Dec. 15.24-25p3)
K20X04G 2020 XG4 (arc=9 days, H=23.0 ~85m) from ARO Westfield (Dec. 11.22-23p3)
K20X03V 2020 XV3 (arc=7 days, H=22.7 ~98m) from Holmes/CTIO (Dec. 16.13-14p3) and Steward Mt. Lemmon Sta. (Dec. 16.22-23p4)
K20X03U 2020 XU3 (arc=8 days, H=22.3 ~117m) from Holmes/CTIO (Dec. 16.15-17p3)
K20X03S 2020 XS3 (arc=8 days, H=25.0 ~34m) from Steward Mt. Lemmon Sta. (Dec. 16.10p3)
K20X03Q 2020 XQ3 (arc=8 days, H=24.9 ~35m) from ARO Westfield (Dec. 15.09-10p3 at V=21.8-22.2)
K20X03N 2020 XN3 (arc=11 days, H=23.0 ~85m) from Steward Mt. Lemmon Sta. (Dec. 16.07-08p4 at G=20.65-22.26)
K20X03D 2020 XD3 (arc=7 days, H=25.5 ~27m) from Steward Mt. Lemmon Sta. (Dec. 16.12p4)
K20X03C 2020 XC3 (arc=7 days, H=22.4 ~112m) from Steward Mt. Lemmon Sta. (Dec. 16.20-21p4)
K20X03A 2020 XA3 (arc=8 days, H=24.3 ~47m) from Steward Mt. Lemmon Sta. (Dec. 16.21p4)
K20X02S 2020 XS2 (Q=4.178 AU, arc=11 days, H=24.9 ~35m) from Steward Mt. Lemmon Sta. (Dec. 16.25p2)
K20X02Q 2020 XQ2 (i=41.9°, arc=8 days, H=22.7 ~98m) from Steward Mt. Lemmon Sta. (Dec. 16.06-07p3)
K20X02N 2020 XN2 (arc=8 days, H=23.4 ~71m) from Steward Mt. Lemmon Sta. (Dec. 16.17-18p3) and MLS (Dec. 16.23-24p4)
K20X02J 2020 XJ2 (arc=9 days, H=24.3 ~47m) from Steward Mt. Lemmon Sta. (Dec. 16.25-27p2)
K20X02F 2020 XF2 (arc=2 days, H=25.3 ~29m) from ARO Westfield (Dec. 9.22p2)
K20X01P 2020 XP1 (arc=10 days, H=24.2 ~49m) from CSS-Kuiper (Dec. 16.23p3)
K20X00M 2020 XM (arc=36 days, H=22.1 ~129m) from MLS (Dec. 16.18-20p4)
K20X00K 2020 XK (arc=12 days, H=24.9 ~35m) from Steward Mt. Lemmon Sta. (Dec. 16.33p2)
K20W04N 2020 WN4 (arc=34 days, H=22.5 ~107m) from Steward Mt. Lemmon Sta. (Dec. 16.47p4)
K20W04E 2020 WE4 (arc=22 days, H=23.4 ~71m) from Holmes/CTIO (Dec. 15.27-28p3)
K20W03E 2020 WE3 (arc=24 days, H=25.2 ~31m) from Holmes/CTIO (Dec. 15.21-23p3)
K20V03Q 2020 VQ3 (arc=36 days, H=22.9 ~89m) from Holmes/CTIO (Dec. 16.12-13p3)
K20V01X 2020 VX1 (arc=36 days, H=22.8 ~93m) from Holmes/CTIO (Dec. 16.18-19p2)
K20V00T 2020 VT (arc=42 days, H=25.1 ~32m) from Holmes/CTIO (Dec. 15.26-28p3) and Spacewatch 0.9m (Dec. 16.44-45p3)
K20R04Y 2020 RY4 (arc=100 days, H=23.6 ~65m) from Holmes/CTIO (Dec. 15.30-33p3 at G=22.7)
K16L48Y 2016 LY48 (arc=151 days, H=22.7 ~98m) from Spacewatch 1.8m (2016 Nov. 5.46-47p2 at R=23.3-9)
K20X00P 2020 XP (arc=29 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (Dec. 16.21p4)
K20W02F 2020 WF2 (Q=4.253 AU, arc=27 days, H=22.0 ~135m) from CSS-Kuiper (Dec. 16.21p2)
K20W01G 2020 WG1 (arc=62 days, H=22.0 ~135m) from ARO Westfield (Dec. 15.02-03p3 at V=22.0-22.2)
K16Y00M 2016 YM (arc=3 opp, H=22.0 ~135m) from MLS (Dec. 15.34-36p4)
Observations of other objects
K20X05C 2020 XC5 (Q=4.150 AU, arc=4 days, H=20.9 ~224m) from Holmes/CTIO (Dec. 16.10-11p3)
K20X04W 2020 XW4 (arc=7 days, H=21.3 ~186m) from Steward Mt. Lemmon Sta. (Dec. 16.44p4) and CSS-Kuiper (Dec. 16.44p4)
K20X04T 2020 XT4 (arc=8 days, H=21.1 ~204m) from MLS (Dec. 15.38-40p4) and Steward Mt. Lemmon Sta. (Dec. 15.55p3 & 16.36-37p4)
K20X04A 2020 XA4 (arc=6 days, H=21.1 ~204m) from Holmes/CTIO (Dec. 15.24-25p3)
K20X03Z 2020 XZ3 (arc=7 days, H=20.6 ~257m) from Holmes/CTIO (Dec. 15.29p2) and Steward Mt. Lemmon Sta. (Dec. 15.52-53p3 & 16.43p3)
K20X03Y 2020 XY3 (arc=7 days, H=20.4 ~282m) from Spacewatch 0.9m (Dec. 16.32-34p3)
K20X03L 2020 XL3 (arc=7 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (Dec. 15.53p4 & 16.36p4) and MLS (Dec. 16.35-37p4)
K20X03K 2020 XK3 (i=57.4°, arc=7 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (Dec. 16.22p4)
K20X02R 2020 XR2 (arc=23 days, H=21.3 ~186m) from MLS (Dec. 16.19-20p3)
K20X02M 2020 XM2 (Q=4.063 AU, arc=10 days, H=19.7 ~389m) from Steward Mt. Lemmon Sta. (Dec. 16.40p4)
K20X01F 2020 XF1 (i=51.9°, arc=11 days, H=21.7 ~155m) from Mt. John Obs. (Dec. 15.49-51p4), Spacewatch 0.9m (Dec. 16.09-11p2), Holmes/CTIO (Dec. 16.10-11p3), and Steward Mt. Lemmon Sta. (Dec. 16.18-19p3)
K20X00Q 2020 XQ (arc=33 days, H=21.4 ~178m) from Steward Mt. Lemmon Sta. (Dec. 16.25-27p4)
K20W05M 2020 WM5 (Q=4.830 AU, arc=18 days, H=20.7 ~245m) from Steward Mt. Lemmon Sta. (Dec. 16.40p4)
K20W05C 2020 WC5 (arc=21 days, H=20.1 ~323m) from MLS (Dec. 16.41-43p4) and Steward Mt. Lemmon Sta. (Dec. 16.46p4)
K20W05A 2020 WA5 (arc=21 days, H=21.5 ~170m) from Northolt Branch Obs. (Dec. 15.91-92p3) and Steward Mt. Lemmon Sta. (Dec. 16.40-41p4)
K20W04J 2020 WJ4 (arc=32 days, H=20.9 ~224m) from MLS (Dec. 15.43-45p4) and Spacewatch 0.9m (Dec. 16.38-39p3)
K20W03M 2020 WM3 (i=40.4°, arc=26 days, H=18.5 ~676m) from Steward Mt. Lemmon Sta. (Dec. 16.48-49p4)
K20W03L 2020 WL3 (i=63.7°, Q=4.394 AU, arc=25 days, H=18.8 ~589m) from Steward Mt. Lemmon Sta. (Dec. 15.52p4)
K20W02T 2020 WT2 (arc=25 days, H=21.1 ~204m) from Mt. John Obs. (Dec. 15.61-62p4)
K20W01M 2020 WM1 (arc=28 days, H=21.3 ~186m) from Holmes/CTIO (Dec. 15.26-27p3)
K20W01J 2020 WJ1 (Q=4.486 AU, arc=33 days, H=19.9 ~355m) from Steward Mt. Lemmon Sta. (Dec. 15.53p4 & 16.45p4)
K20V06Q 2020 VQ6 (arc=30 days, H=21.2 ~195m) from MLS (Dec. 15.28-29p4) and PS1 (Dec. 15.47-51p6)
K20V05Z 2020 VZ5 (arc=31 days, H=21.0 ~214m) from Holmes/CTIO (Dec. 15.32p3)
K20V03M 2020 VM3 (arc=35 days, H=20.8 ~234m) from ZTF (Dec. 13.37p1, 13.47-49p2 & 15.38-44p5) and PS1 (Dec. 15.52-55p4)
K20V01B 2020 VB1 (arc=9 days, H=21.2 ~195m) from ARO Westfield (Nov. 6.11p2 at V=22.2-6)
K20U07G 2020 UG7 (arc=2 opp, H=19.3 ~467m) from PS1 (Dec. 15.43-45p2)
K20U04R 2020 UR4 (Q=4.172 AU, arc=63 days, H=20.1 ~323m) from ARO Westfield (Dec. 14.99-02p3 at V=22.0-22.1)
K20T04G 2020 TG4 (Q=4.171 AU, arc=87 days, H=20.0 ~339m) from ZTF (Dec. 15.26-27p2 & 15.36p2) and MLS (Dec. 15.32-33p4)
K20R00U 2020 RU (Q=4.833 AU, arc=107 days, H=19.2 ~490m) from ZTF (Dec. 11.37-39p2, 11.49p1, 13.30-34p2, 13.49p1 & 15.27-31p2)
K20Q07A 2020 QA7 (Q=4.150 AU, arc=109 days, H=20.1 ~323m) from MLS (Dec. 15.27-29p4) and PS1 (Dec. 15.47-51p4)
K20Q06F 2020 QF6 (i=73.6°, Q=4.503 AU, arc=115 days, H=17.8 ~933m) from Mt. John Obs. (Dec. 15.57-59p4)
K20Q05P 2020 QP5 (i=40.3°, Q=4.070 AU, arc=119 days, H=18.3 ~741m) from CSS-Kuiper (Dec. 16.09-11p4 at G=21.54-23.43)
K20O08C 2020 OC8 (arc=183 days, H=20.8 ~234m) from CSS (Dec. 15.19-20p4)
K19B01O 2019 BO1 (arc=3 opp, H=19.6 ~407m) from PS1 (Dec. 15.53-56p4)
K19A05N 2019 AN5 (arc=5 opp, H=21.1 ~204m) from MLS (Dec. 15.43-45p4)
K18F01Z 2018 FZ1 (arc=2 opp, H=20.9 ~224m) from ARO Westfield (Dec. 15.05-06p3 at V=22.1)
K17X62H 2017 XH62 (arc=3 opp, H=20.1 ~323m) from MLS (Dec. 15.36-38p4)
K17V12T 2017 VT12 (arc=4 opp, H=20.4 ~282m) from Lumezzane Obs. (Dec. 13.70p2)
K17S19E 2017 SE19 (arc=3 opp, H=19.8 ~371m) from Lumezzane Obs. (Dec. 13.75p3), CSS (Dec. 15.14-16p3), and ATLAS Haleakala (Dec. 15.28-31p4)
K17B92L 2017 BL92 (arc=3 opp, H=20.9 ~224m) from Holmes/CTIO (Dec. 14.21-24p3 at G=23.2 & 15.22-25p3 at G=23.0)
K17B31L 2017 BL31 (q=0.370 AU, Q=4.566 AU, arc=3 opp, H=18.9 ~562m) from MLS (Dec. 15.38-40p4)
K16U25Y 2016 UY25 (arc=2 opp, H=21.4 ~178m) from Spacewatch 1.8m (2016 Nov. 2.21-22p2 at R=22.0-22.1)
K16O05P 2016 OP5 (arc=4 opp, H=20.9 ~224m) from CSS (Dec. 15.14-16p4) and ATLAS Haleakala (Dec. 15.29-31p4)
K16N38V 2016 NV38 (Q=4.019 AU, arc=2 opp, H=18.7 ~616m) from Mt. John Obs. (Dec. 15.54-55p4)
K16J34N 2016 JN34 (i=45.2°, arc=3 opp, H=20.4 ~282m) from PS1 (Dec. 15.39-41p3)
K15W09F 2015 WF9 (i=52.8°, arc=3 opp, H=18.8 ~589m) from Mt. John Obs. (Dec. 15.53p3)
K15O00H 2015 OH (arc=3 opp, H=19.8 ~371m) from CSS-Kuiper (Dec. 16.46-47p4 at G=21.22-22.36)
K15FB8T 2015 FT118 (arc=3 opp, H=20.6 ~257m) from Mt. John Obs. (Dec. 15.51-52p3)
K14Y34S 2014 YS34 (arc=3 opp, H=20.8 ~234m) from Spacewatch 1.8m (2016 Nov. 2.48-50p2)
K14Y15P 2014 YP15 (arc=3 opp, H=19.9 ~355m) from PS1 (Dec. 15.43-46p4)
K14HI7M 2014 HM187 (arc=5 opp, H=21.4 ~178m) from MLS (Dec. 15.28-29p4)
K13P06Y 2013 PY6 (arc=4 opp, H=19.4 ~446m) from CSS (Dec. 15.19-21p2)
K13P06V 2013 PV6 (arc=6 opp, H=19.2 ~490m) from ZTF (Dec. 15.27-28p2 & 15.34-35p2)
K13B73N 2013 BN73 (arc=2 opp, H=20.0 ~339m) from Spacewatch 1.8m (2016 Nov. 25.17p2)
K13A52X 2013 AX52 (arc=3 opp, H=20.2 ~309m) from CSS-Kuiper (Dec. 16.40-41p3 at G=21.37-22.23)
K12U68M 2012 UM68 (arc=4 opp, H=19.1 ~513m) from MLS (Dec. 15.52-53p4)
K11Q09G 2011 QG9 (Q=4.358 AU, arc=3 opp, H=20.4 ~282m) from ZTF (Dec. 15.24p1, 15.37p1 & 15.43-45p2)
K09WA4G 2009 WG104 (arc=4 opp, H=20.2 ~309m) from ZTF (Dec. 15.24-27p3 & 15.36p3)
K08CB6H 2008 CH116 (q=0.273 AU, arc=8 opp, H=19.2 ~490m) from Spacewatch 0.9m (Dec. 15.51-54p3)
K03Y00J 2003 YJ (arc=4 opp, H=20.3 ~295m) from CSS (Dec. 15.21-23p4)
K03K16W 2003 KW16 (i=38.4°, arc=5 opp, H=20.1 ~323m) from ARO Westfield (Dec. 15.04-06p2 at V=22.1-2)
K03J14N 2003 JN14 (arc=4 opp, H=19.4 ~446m) from MLS (Dec. 15.50-52p4)
K01Y03V 2001 YV3 (arc=3 opp, H=20.4 ~282m) from CSS (Dec. 15.37-38p4) and ATLAS Haleakala (Dec. 15.54-55p4)
J99V15X 1999 VX15 (Q=4.807 AU, arc=2 opp, H=18.7 ~616m) from ATLAS Haleakala (Dec. 15.43-44p4)
q3824 523824 2016 RO1 from CSS (Dec. 15.41-43p4) and PS1 (Dec. 15.57-60p3)
p3125 513125 1997 GC32 from CSS (Dec. 15.30p1)
p1520 511520 2014 QW296 from MLS (Dec. 15.50-52p4)
o6779 506779 2006 YY2 from ZTF (Dec. 15.26-27p2 & 15.34p2)
o6459 506459 2002 AL14 from CSS (Dec. 15.43-45p3) and PS1 (Dec. 15.58-62p4)
n7094 497094 2004 AH from ZTF (Dec. 13.38-41p2 & 13.48p2)
m0885 480885 2002 AC29 from MLS (Dec. 15.30-31p4)
l4613 474613 2004 TL19 from PS1 (Dec. 15.32-35p4)
k5749 465749 2009 WO6 from ZTF (Dec. 13.41-45p3, 13.49p5 & 15.39-45p3)
k4797 464797 2004 FZ1 from PS1 (Dec. 15.60-62p3)
j2307 452307 Manawydan (1997 XV11) from CSS (Dec. 15.19-20p3)
j0263 450263 2003 WD158 from ZTF (Dec. 15.23-24p2 & 15.32-33p2)
i9107 449107 2012 VJ82 from CSS (Dec. 15.37p1)
h5404 435404 2008 AT28 from ATLAS Haleakala (Dec. 15.46-47p4)
h4051 434051 2001 UW16 from PS1 (Dec. 15.21-25p3 at w=22.0-22.1)
g0591 420591 2012 HF31 from MLS (Dec. 15.48-50p4)
f4586 414586 2009 UV18 from CSS (Dec. 15.16-18p4)
c2395 382395 1990 SM from CSS (Dec. 15.54-55p4)
b3579 373579 2002 AW11 from CSS (Dec. 15.21-23p4)
a0502 360502 2003 EO16 from Mt. John Obs. (Dec. 15.43-44p4)
V3552 313552 2003 BX33 from PS1 (Dec. 15.59-62p4)
S3729 283729 2002 UX from MLS (Dec. 15.34-36p3)
R5714 275714 2000 YH4 from CSS (Dec. 15.17-18p4) and ATLAS Haleakala (Dec. 15.29-31p4)
O1596 241596 1998 XM2 from ZTF (Dec. 13.34-36p2, 15.28p1 & 15.34p1)
L6707 216707 2004 XP164 from CSS (Dec. 15.35-36p4)
G3902 163902 2003 SW222 from ATLAS Mauna Loa (Dec. 15.35-36p4)
G3014 163014 2001 UA5 from CSS (Dec. 15.07-09p4)
G2173 162173 Ryugu (1999 JU3) from Southern Utsunomiya (Dec. 15.36-38p6)
F9923 159923 2004 YJ32 from MLS (Dec. 15.43-45p4)
F9402 159402 1999 AP10 from program code 1 via Kuban State Univ. Obs. (Dec. 15.67-74p20)
F2978 152978 2000 GJ147 from PS1 (Dec. 15.38-41p4)
D8175 138175 2000 EE104 from PS1 (Dec. 15.52-55p3)
D7925 137925 2000 BJ19 from MLS (Dec. 15.54-55p4)
D7078 137078 1998 XZ4 from MLS (Dec. 15.48-50p4)
99907 99907 1989 VA from ATLAS Haleakala (Dec. 15.23-26p4)
90075 90075 2002 VU94 from Lumezzane Obs. (Dec. 13.72p2) and ATLAS Haleakala (Dec. 15.21-23p4)
89355 89355 2001 VS78 from ZTF (Dec. 13.46-49p2) and MLS (Dec. 15.40-42p4)
88264 88264 2001 KN20 from ZTF (Dec. 11.16-25p5)
85804 85804 1998 WQ5 from ZTF (Dec. 11.13-14p2 & 15.10-11p3)
85275 85275 1994 LY from ZTF (Dec. 15.20-23p5 & 15.30p1)
68359 68359 2001 OZ13 from CSS (Dec. 15.14-16p4) and ATLAS Haleakala (Dec. 15.29-31p4)
68346 68346 2001 KZ66 from PS1 (Dec. 15.59-62p3)
55532 55532 2001 WG2 from CSS (Dec. 15.21-23p3)
40263 40263 1999 FQ5 from PS1 (Dec. 15.60-62p3)
31669 31669 1999 JT6 from CSS (Dec. 15.54-55p3)
30825 30825 1990 TG1 from ATLAS Haleakala (Dec. 15.20-22p4)
29075 29075 1950 DA from ZTF (Dec. 15.48-53p6)
22753 22753 1998 WT from MLS (Dec. 15.43-44p4)
20236 20236 1998 BZ7 from MLS (Dec. 15.30-31p4)
19764 19764 2000 NF5 from SATINO-1 (July 14.99-01p5)
10860 10860 1995 LE from ZTF (Dec. 13.26p1, 13.35-40p3 & 15.26-27p2)
09172 9172 Abhramu (1989 OB) from ATLAS Haleakala (Dec. 15.22-24p4)
08567 8567 1996 HW1 from ZTF (Dec. 11.35p1, 11.44-48p2, 13.44p1 & 13.48p1)
08037 8037 1993 HO1 from CSS (Dec. 15.45-47p3) and ZTF (Dec. 15.46-53p4)
05836 5836 1993 MF from MLS (Dec. 15.28-29p4)
05587 5587 1990 SB from CSS (Dec. 15.19-20p4) and ATLAS Haleakala (Dec. 15.37-40p4)
04947 4947 Ninkasi (1988 TJ1) from CSS (Dec. 15.08-09p2)
04503 4503 Cleobulus (1989 WM) from ATLAS Haleakala (Dec. 15.27-30p4)
03908 3908 Nyx (1980 PA) from Lumezzane Obs. (Dec. 13.73-74p3), CSS (Dec. 15.07-09p4), and ATLAS Haleakala (Dec. 15.23-26p4)
03199 3199 Nefertiti (1982 RA) from CSS (Dec. 15.45-47p4)
01943 1943 Anteros (1973 EC) from CSS (Dec. 15.45-47p4) and ATLAS Haleakala (Dec. 15.60-62p4)
01685 1685 Toro (1948 OA) from CSS (Dec. 15.48-49p4) and ATLAS Haleakala (Dec. 15.61-63p4)
01036 1036 Ganymed (1924 TD) from ZTF (Dec. 11.38-40p2, 15.36p1 & 15.42p1) and ATLAS Haleakala (Dec. 15.46-47p4)
00433 433 Eros (1898 DQ) from CSS (Dec. 15.51-53p4) and ATLAS Haleakala (Dec. 15.62-65p4)

MPEC 2020-Y09 - "05:20 UT" - 2020 XK6

K20X06K 2020 XK6 (small asteroid, H=25.21 ~31m) was picked up at 0611 UT on 14 Dec. by MLS, observing it at Dec. 14.26-27p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 14.37p4 & 15.30-31p4), Visnjan Obs. (Dec. 14.84-85p3), and Tebbutt Obs. (Dec. 16.17-18p3).

MPEC 2020-Y08 - "04:14 UT" - 2020 XJ6

K20X06J 2020 XJ6 (Earth MOID=2.3 LD, H=27.34 ~12m, NHATS target) was picked up at 0816 UT on 14 Dec. by MLS, observing it at Dec. 14.34-35p3 and 15.42p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 14.47-48p3) and Visnjan Obs. (Dec. 14.97-98p3 & 15.89-90p4).

MPEC 2020-Y07 - "04:12 UT" - 2020 XH6

K20X06H 2020 XH6 (Earth MOID=6.0 LD, H=27.05 ~13m) was picked up at 0728 UT on 14 Dec. by Bok Tel., observing it at Dec. 14.31-33p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 14.42-43p3 & 16.15p2), Visnjan Obs. (Dec. 14.78-79p5), Schwarzschild Obs./code 1 (Dec. 14.93p2), and CSS-Kuiper (Dec. 15.24p4).

MPEC 2020-Y06 - "04:09 UT" - 2020 XG6

K20X06G 2020 XG6 (small asteroid, H=24.37 ~45m) was picked up at 0606 UT on 14 Dec. by MLS, observing it at Dec. 14.25-27p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 14.35-36p3), Visnjan Obs. (Dec. 14.71-73p4), ARO Westfield (Dec. 15.08-09p3), Tebbutt Obs. (Dec. 16.11-12p2), and CSS-Kuiper (Dec. 16.15-16p3).

MPEC 2020-Y05 - "04:07 UT" - 2020 XF6

K20X06F 2020 XF6 (small asteroid, Q=4.403 AU, H=22.27 ~119m) was picked up at 1204 UT on 11 Dec. by PS1, observing it at Dec. 11.50-54p4 at w=21.75-22.33. This detection was confirmed by Spacewatch 0.9m (Dec. 12.46-47p3 at R=21.6-22.2), Visnjan Obs. (Dec. 14.12-14p4 at G=21.8-22.1), and Holmes/CTIO (Dec. 14.33p3).

MPEC 2020-Y04 - "04:04 UT" - 2020 XE6

K20X06E 2020 XE6 (risk listed, H=20.07 ~328m) was picked up at 1204 UT on 12 Dec. by PS1, observing it at Dec. 12.50-53p3. This detection was confirmed by Visnjan Obs. (Dec. 13.07p3 & 15.10-11p3) and CSS-Kuiper (Dec. 14.34-35p4).

MPEC 2020-Y03 - "04:00 UT" - 2020 XD6

K20X06D 2020 XD6 (small asteroid, H=25.19 ~31m) was picked up at 0703 UT on 14 Dec. by Bok Tel., observing it at Dec. 14.29-31p4. This detection was confirmed by CSS-Kuiper (Dec. 14.40-41p4), Visnjan Obs. (Dec. 14.75-76p4), ARO Westfield (Dec. 15.10-12p3), and Steward Mt. Lemmon Sta. (Dec. 15.32p3 & 16.14-15p2).

MPEC 2020-Y02 - "03:56 UT" - 2020 XC6

K20X06C 2020 XC6 (small asteroid, H=24.72 ~39m) was picked up at 0606 UT on 14 Dec. by MLS, observing it at Dec. 14.25-27p4. This detection was confirmed by CSS-Kuiper (Dec. 14.37-38p4 & 16.14-15p4), Visnjan Obs. (Dec. 14.81-82p3), and Steward Mt. Lemmon Sta. (Dec. 15.27-29p3).

MPEC 2020-Y01 - "03:51 UT" - 2020 XB6

K20X06B 2020 XB6 (small asteroid, i=55.7°, H=22.75 ~95m) was picked up at 0538 UT on 14 Dec. by MLS, observing it at Dec. 14.23-25p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 14.35p4 & 16.13-14p4), Visnjan Obs. (Dec. 14.74p4), Schwarzschild Obs./code 1 (Dec. 14.91p3), Great Shefford Obs. (Dec. 14.99-02p3), ARO Westfield (Dec. 15.06-07p5), and Tebbutt Obs. (Dec. 16.08-10p3).

Observers on 16 December '20

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

Code	Observer / observatory
`L74`	AstroColauri Obs., 2 in MPECs 2020-Y10 & 2020-Y18 -- 2020 XV6, 2020 XB6
`H21`	Astronomical Research Obs. Westfield in Illinois, 15 in MPECs 2020-Y01, 2020-Y03, 2020-Y06, 2020-Y10 & 2020-Y12 -- 2020 XQ3, 2020 XM6, 2020 XJ4, 2020 XH4, 2020 XG6, 2020 XG4, 2020 XF2, 2020 XD6, 2020 XB6, 2020 WG1, 2020 VW, 2020 VB1, 2020 UR4, 2018 FZ1, 2003 KW16
`T05`	ATLAS Haleakala in Hawaii, 21 in MPEC 2020-Y10 -- 2020 XH1, 2020 SO, 2017 SE19, 2016 OP5, 2001 YV3, 1999 VX15, 99907, 90075, 68359, 435404, 30825, 275714, 9172, 5587, 4503, 4179, 3908, 1943, 1685, 1036, 433
`T08`	ATLAS Mauna Loa in Hawaii, 1 in MPEC 2020-Y10 -- 163902
`V00`	Bok Telescope in Arizona, 3 in MPECs 2020-Y03, 2020-Y07 & 2020-Y15 -- 2020 XQ6, 2020 XH6, 2020 XD6
`703`	Catalina Sky Survey (CSS) in Arizona, 30 in MPECs 2020-Y10 & 2020-Y18 -- 2020 XV6, 2020 OC8, 2017 SE19, 2016 OP5, 2013 PY6, 2011 GD60, 2003 YJ, 2001 YV3, 68359, 55532, 523824, 513125, 506459, 452307, 449107, 414586, 382395, 373579, 31669, 275714, 216707, 163014, 8037, 5587, 4947, 3908, 3199, 1943, 1685, 433
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 20 in MPECs 2020-Y02, 2020-Y03, 2020-Y04, 2020-Y06, 2020-Y07, 2020-Y10, 2020-Y11, 2020-Y12, 2020-Y14, 2020-Y17 & 2020-Y18 -- 2020 XW4, 2020 XV6, 2020 XU6, 2020 XP6, 2020 XP1, 2020 XN5, 2020 XM6, 2020 XL6, 2020 XK6, 2020 XH6, 2020 XG6, 2020 XG5, 2020 XF6, 2020 XE6, 2020 XD6, 2020 XC6, 2020 WF2, 2020 QP5, 2015 OH, 2013 AX52
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 22 in MPECs 2020-Y05 & 2020-Y10 -- 2020 XZ3, 2020 XZ2, 2020 XV4, 2020 XV3, 2020 XV2, 2020 XU3, 2020 XO2, 2020 XH4, 2020 XF6, 2020 XF1, 2020 XC5, 2020 XA4, 2020 WQ1, 2020 WM1, 2020 WE4, 2020 WE3, 2020 VZ5, 2020 VX1, 2020 VT, 2020 VQ3, 2020 RY4, 2017 BL92
`Z99`	Clixby Obs. in England, 2 in MPECs 2020-Y10 & 2020-Y18 -- 2020 XV6, 2020 XC4
`958`	Dax Obs. in France, 1 in MPEC 2020-Y18 -- 2020 XV6
`K87`	Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2020-Y18 -- 2020 XV6
`113`	Drebach Obs. in Germany, 1 in MPEC 2020-Y18 -- 2020 XV6
`595`	Farra d'Isonzo Obs. in Italy, 2 in MPECs 2020-Y10 & 2020-Y18 -- 2020 XV6, 2020 XS5
`L34`	Galhassin Robotic Telescope, 3 in MPECs 2020-Y10 & 2020-Y18 -- 2020 XV6, 2020 XF4, 2020 VP4
`J95`	Great Shefford Obs. in England, 5 in MPECs 2020-Y01, 2020-Y10 & 2020-Y18 -- 2020 XX3, 2020 XV6, 2020 XF4, 2020 XB6, 2020 XA6
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-Y10 -- 159402
`130`	Lumezzane Obs. in Italy, 4 in MPEC 2020-Y10 -- 2017 VT12, 2017 SE19, 90075, 3908
`474`	Mt. John Obs. in New Zealand, 9 in MPECs 2020-Y10 & 2020-Y18 -- 2020 XV6, 2020 XF1, 2020 WT2, 2020 WK3, 2020 QF6, 2016 NV38, 2015 WF9, 2015 FT118, 360502
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 46 in MPECs 2020-Y01, 2020-Y02, 2020-Y06, 2020-Y08, 2020-Y09, 2020-Y10, 2020-Y11, 2020-Y12, 2020-Y13, 2020-Y14, 2020-Y15, 2020-Y16 & 2020-Y17 -- 2020 XX3, 2020 XU6, 2020 XT4, 2020 XR6, 2020 XR2, 2020 XQ6, 2020 XP6, 2020 XO6, 2020 XN2, 2020 XM6, 2020 XM, 2020 XL6, 2020 XL3, 2020 XK6, 2020 XJ6, 2020 XG6, 2020 XD5, 2020 XC6, 2020 XB6, 2020 WW5, 2020 WJ4, 2020 WC5, 2020 VQ6, 2020 TG4, 2020 QA7, 2019 AN5, 2017 XH62, 2017 BL31, 2016 YM, 2014 HM187, 2013 YS2, 2012 UM68, 2012 UK171, 2006 YF, 2003 JN14, 89355, 511520, 480885, 420591, 283729, 22753, 20236, 159923, 137925, 137078, 5836
`K74`	Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-Y18 -- 2020 XV6
`J69`	North Obs. in England, 1 in MPEC 2020-Y18 -- 2020 XV6
`Z80`	Northolt Branch Obs. in England, 4 in MPECs 2020-Y10 & 2020-Y18 -- 2020 XX3, 2020 XV6, 2020 XH1, 2020 WA5
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 22 in MPECs 2020-Y04, 2020-Y05, 2020-Y10 & 2020-Y13 -- 2020 XZ5, 2020 XO6, 2020 XF6, 2020 XE6, 2020 VQ6, 2020 VM3, 2020 UG7, 2020 QA7, 2020 OK5, 2019 BO1, 2016 JN34, 2014 YP15, 68346, 523824, 506459, 474613, 464797, 434051, 40263, 313552, 152978, 138175
`F52`	Pan-STARRS 2 in Hawaii, 1 in MPEC 2020-Y10 -- 2020 XZ5
`L07`	Salvatore di Giacomo Obs., 1 in MPEC 2020-Y18 -- 2020 XV6
`C95`	SATINO-1 in France, 1 in MPEC 2020-Y10 -- 19764
`0331`	program code 1 via Schwarzschild Obs. in Germany, 3 in MPECs 2020-Y01, 2020-Y07, 2020-Y10 & 2020-Y18 -- 2020 XV6, 2020 XH6, 2020 XB6
`Q21`	Southern Utsunomiya in Japan, 1 in MPEC 2020-Y10 -- 162173
`691`	Spacewatch 0.9m telescope in Arizona, 10 in MPECs 2020-Y05, 2020-Y10 & 2020-Y17 -- 2020 XY3, 2020 XU6, 2020 XK5, 2020 XF6, 2020 XF1, 2020 XE3, 2020 WJ4, 2020 WF3, 2020 VT, 2008 CH116
`291`	Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2020-Y10 & 2020-Y15 -- 2020 XU4, 2020 XQ6, 2020 XG1, 2020 XE3, 2016 WY, 2016 UY25, 2016 UR31, 2016 LY48, 2014 YS34, 2013 BN73
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 57 in MPECs 2020-Y01, 2020-Y02, 2020-Y03, 2020-Y06, 2020-Y07, 2020-Y08, 2020-Y09, 2020-Y10, 2020-Y11, 2020-Y14, 2020-Y15, 2020-Y16, 2020-Y17 & 2020-Y18 -- 2020 XZ4, 2020 XZ3, 2020 XZ2, 2020 XX3, 2020 XW4, 2020 XW3, 2020 XW, 2020 XV6, 2020 XV4, 2020 XV3, 2020 XU6, 2020 XT4, 2020 XS3, 2020 XS2, 2020 XR6, 2020 XQ6, 2020 XQ2, 2020 XQ, 2020 XP6, 2020 XP, 2020 XN5, 2020 XN3, 2020 XN2, 2020 XM2, 2020 XL6, 2020 XL3, 2020 XK6, 2020 XK3, 2020 XK, 2020 XJ6, 2020 XJ3, 2020 XJ2, 2020 XH6, 2020 XH1, 2020 XH, 2020 XG6, 2020 XG1, 2020 XF1, 2020 XF, 2020 XD6, 2020 XD5, 2020 XD3, 2020 XC6, 2020 XC4, 2020 XC3, 2020 XB6, 2020 XB1, 2020 XA3, 2020 WZ5, 2020 WN4, 2020 WM5, 2020 WM3, 2020 WL3, 2020 WJ1, 2020 WC5, 2020 WA5, 2020 SO
`858`	Tebbutt Obs. in New Mexico, 7 in MPECs 2020-Y01, 2020-Y06, 2020-Y09, 2020-Y10, 2020-Y14, 2020-Y15 & 2020-Y18 -- 2020 XV6, 2020 XQ6, 2020 XP6, 2020 XK6, 2020 XG6, 2020 XD6, 2020 XB6
`L01`	Visnjan Obs. in Croatia, 14 in MPECs 2020-Y01, 2020-Y02, 2020-Y03, 2020-Y04, 2020-Y05, 2020-Y06, 2020-Y07, 2020-Y08, 2020-Y09, 2020-Y11, 2020-Y14, 2020-Y15, 2020-Y16 & 2020-Y18 -- 2020 XV6, 2020 XR6, 2020 XQ6, 2020 XP6, 2020 XL6, 2020 XK6, 2020 XJ6, 2020 XH6, 2020 XG6, 2020 XF6, 2020 XE6, 2020 XD6, 2020 XC6, 2020 XB6
`I41`	Zwicky Transient Facility (ZTF) in southern California, 21 in MPEC 2020-Y10 -- 2020 VM3, 2020 TG4, 2020 RU, 2013 PV6, 2011 QG9, 2009 WG104, 89355, 88264, 85804, 85275, 506779, 501647, 497094, 465749, 450263, 29075, 241596, 10860, 8567, 8037, 1036

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

Impact Risk Monitoring on 16 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 XV6	JPL Sentry	2300	2102-2102	2	3.295e-07	-5.09	-5.26	0	JPL: Computed at 14:34 today Pacific time based on 68 observations spanning 1.6604 days (2020-Dec-15.120177 to 2020-Dec-16.78053). Diameter approximately 0.092 km. from weighted mean H=22.82.

2020 XU6	NEODyS	2010	2025-2120	206	3.76e-06	-3.69	-4.79	n/a	NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2020-12-14.363 to 2020-12-16.321."
2020 XU6	JPL Sentry	1807	2024-2120	242	3.8269264e-06	-3.66	-4.07	0	JPL: Computed at 09:56 today Pacific time based on 15 observations spanning 1.9583 days (2020-Dec-14.362132 to 2020-Dec-16.320387). Diameter approximately 0.178 km. from weighted mean H=21.39.

2020 XE6	NEODyS	2010	R E M O V E D						NEODyS #2 for the day
2020 XE6	JPL Sentry	1700	2081-2120	7	3.6941e-09	-6.35	-6.97	0	JPL #2 for the day: Computed at 06:21 today Pacific time based on 17 observations spanning 3.9517 days (2020-Dec-12.502804 to 2020-Dec-16.454469). Diameter approximately 0.328 km. from weighted mean H=20.07.

2020 XA6	NEODyS	2010	2057-2073	7	7.72e-06	-4.36	-4.64	0	NEODyS #2 for the day: "Based on 59 optical observations (of which 1 are rejected as outliers) from 2020-12-14.125 to 2020-12-15.792."
2020 XA6	JPL Sentry	1700	2065-2074	7	1.7349123e-05	-4.00	-4.22	0	JPL: Computed at 06:53 today Pacific time based on 59 observations spanning 1.6673 days (2020-Dec-14.124162 to 2020-Dec-15.791423). Diameter approximately 0.053 km. from weighted mean H=24.03.

2020 XK5	NEODyS	2010	R E M O V E D						-
2020 XK5	JPL Sentry	1700	2114-2114	1	8.049e-10	-8.78	-8.78	0	JPL: Computed at 06:19 today Pacific time based on 17 observations spanning 3.8725 days (2020-Dec-12.387561 to 2020-Dec-16.26004). Diameter approximately 0.062 km. from weighted mean H=23.68.

2020 XU4	NEODyS	2010	2112-2118	3	1.6e-06	-7.55	-7.55	0	NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2020-12-12.332 to 2020-12-15.388."
2020 XU4	JPL Sentry	1700	2112-2112	1	6.382e-07	-7.95	-7.95	0	JPL: Computed at 06:51 today Pacific time based on 17 observations spanning 3.0565 days (2020-Dec-12.33093 to 2020-Dec-15.38739). Diameter approximately 0.009 km. from weighted mean H=27.79.

2020 XF4	NEODyS	2010	2104-2119	19	4.1e-06	-7.04	-7.47	0	NEODyS: "Based on 68 optical observations (of which 0 are rejected as outliers) from 2020-12-05.437 to 2020-12-15.883."
2020 XF4	JPL Sentry	1700	2093-2119	10	2.933784e-06	-7.19	-7.52	0	JPL: Computed at 06:33 today Pacific time based on 68 observations spanning 10.446 days (2020-Dec-05.43588 to 2020-Dec-15.882101). Diameter approximately 0.010 km. from weighted mean H=27.55.

2020 XX3	NEODyS	2010	2086-2120	24	3.03e-05	-6.55	-6.71	n/a	NEODyS: "Based on 64 optical observations (of which 0 are rejected as outliers) from 2020-12-10.277 to 2020-12-16.220."
2020 XX3	JPL Sentry	1700	2086-2119	13	1.2764561e-05	-6.94	-7.19	0	JPL: Computed at 06:54 today Pacific time based on 64 observations spanning 5.9431 days (2020-Dec-10.276407 to 2020-Dec-16.219518). Diameter approximately 0.007 km. from weighted mean H=28.50.

2020 XE3	NEODyS	2010	2097	1	5.87e-09	-8.47	-8.47	0	NEODyS: "Based on 24 optical observations (of which 2 are rejected as outliers) from 2020-12-06.283 to 2020-12-16.185."
2020 XE3	JPL Sentry	1700	2097-2097	1	1.115e-08	-8.19	-8.19	0	JPL: Computed at 06:20 today Pacific time based on 22 observations spanning 9.8668 days (2020-Dec-06.28728 to 2020-Dec-16.15407). Diameter approximately 0.035 km. from weighted mean H=24.92.

2020 XF	NEODyS	2010	2056-2120	555	9.29e-04	-4.05	-4.22	n/a	NEODyS: "Based on 69 optical observations (of which 1 are rejected as outliers) from 2020-12-04.328 to 2020-12-16.080."
2020 XF	JPL Sentry	1700	2056-2120	131	0.00037463805	-4.50	-5.00	0	JPL: Computed at 06:27 today Pacific time based on 69 observations spanning 11.752 days (2020-Dec-04.32683 to 2020-Dec-16.07883). Diameter approximately 0.016 km. from weighted mean H=26.67.

2020 VW	NEODyS	2010	2062-2094	41	5.2e-03	-3.99	-4.29	0	NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2020-11-05.170 to 2020-11-18.204."
2020 VW	JPL Sentry	1700	2064-2087	25	0.004417144599	-4.03	-4.31	0	JPL: Computed at 06:12 today Pacific time based on 18 observations spanning 13.034 days (2020-Nov-05.169443 to 2020-Nov-18.203395). Diameter approximately 0.007 km. from weighted mean H=28.29.

2018 XR4	JPL Sentry	0600	2062-2114	5	3.590074e-06	-6.34	-6.55	0	JPL: Computed at 11:33 Dec. 15th of 2018 Pacific time based on 27 observations spanning .98982 days (2018-Dec-14.26688 to 2018-Dec-15.2567). Diameter approximately 0.015 km. from weighted mean H=26.80.

2018 LT5	JPL Sentry	0600	2025-2083	5	1.270891e-07	-6.74	-6.86	0	JPL: Computed at 07:39 June 19th of 2018 Pacific time based on 12 observations spanning 4.6471 days (2018-Jun-14.39564 to 2018-Jun-19.04275). Diameter approximately 0.034 km. from weighted mean H=24.99.

2017 YM1	JPL Sentry	0600	2048-2103	18	2.76354256e-05	-4.80	-5.00	0	JPL: Computed at 08:45 Jan. 12th of 2018 Pacific time based on 29 observations spanning 16.033 days (2017-Dec-20.40891 to 2018-Jan-05.44143). Diameter approximately 0.031 km. from weighted mean H=25.16.

2016 WY	NEODyS	2010	2092-2120	28	3.18e-04	-5.97	-6.15	n/a	NEODyS: "Based on 41 optical observations (of which 4 are rejected as outliers) from 2016-11-19.261 to 2016-11-29.246."
2016 WY	JPL Sentry	1700	2091-2111	10	0.0001199959	-6.38	-6.55	0	JPL: Computed at 06:11 today Pacific time based on 34 observations spanning 9.9848 days (2016-Nov-19.26009 to 2016-Nov-29.244925). Diameter approximately 0.005 km. from weighted mean H=29.22.

2010 WW8	JPL Sentry	0600	2021-2112	81	1.35367e-07	-6.94	-7.43	0	JPL: Computed at 11:07 April 9th of 2017 Pacific time based on 12 observations spanning .06622 days (2010-Nov-30.37333 to 2010-Nov-30.43955). Diameter approximately 0.018 km. from weighted mean H=26.41.

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 16 December '20

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

2300	Noted that JPL Sentry has posted 2020 XV6 as an impact risk - see above
2200	Grabbed MPEC 2020-Y18 - 2020 XV6 - see above
2010	Noted that NEODyS has updated its 2016 WY risk assessment - see above Noted that NEODyS has updated its 2020 VW risk assessment - see above Noted that NEODyS has updated its 2020 XA6 risk assessment - see above Noted that NEODyS has updated its 2020 XE3 risk assessment - see above Noted that NEODyS has removed 2020 XE6 as an impact risk - see above Noted that NEODyS has updated its 2020 XF risk assessment - see above Noted that NEODyS has updated its 2020 XF4 risk assessment - see above Noted that NEODyS has removed 2020 XK5 as an impact risk - see above Noted that NEODyS has updated its 2020 XU4 risk assessment - see above Noted that NEODyS has posted 2020 XU6 as an impact risk - see above Noted that NEODyS has updated its 2020 XX3 risk assessment - see above
1807	Noted that JPL Sentry has posted 2020 XU6 as an impact risk - see above
1700	Noted that JPL Sentry has updated its 2016 WY risk assessment - see above Noted that JPL Sentry has updated its 2020 VW risk assessment - see above Noted that JPL Sentry has updated its 2020 XA6 risk assessment - see above Noted that NEODyS has posted 2020 XA6 as an impact risk - see above Noted that JPL Sentry has updated its 2020 XE3 risk assessment - see above Noted that JPL Sentry has updated its 2020 XE6 risk assessment - see above Noted that NEODyS has posted 2020 XE6 as an impact risk - see above Noted that JPL Sentry has updated its 2020 XF risk assessment - see above Noted that JPL Sentry has updated its 2020 XF4 risk assessment - see above Noted that JPL Sentry has posted 2020 XK5 as an impact risk - see above Noted that JPL Sentry has updated its 2020 XU4 risk assessment - see above Noted that JPL Sentry has updated its 2020 XX3 risk assessment - see above Grabbed MPEC 2020-Y10 - Daily Orbit Update - see above Grabbed MPEC 2020-Y11 - 2020 XL6 - see above Grabbed MPEC 2020-Y12 - 2020 XM6 - see above Grabbed MPEC 2020-Y13 - 2020 XO6 - see above Grabbed MPEC 2020-Y14 - 2020 XP6 - see above Grabbed MPEC 2020-Y15 - 2020 XQ6 - see above Grabbed MPEC 2020-Y16 - 2020 XR6 - see above Grabbed MPEC 2020-Y17 - 2020 XU6 - see above
0600	Noted that JPL Sentry has updated its 2010 WW8 risk assessment - see above Noted that JPL Sentry has updated its 2017 YM1 risk assessment - see above Noted that JPL Sentry has updated its 2018 LT5 risk assessment - see above Noted that JPL Sentry has updated its 2018 XR4 risk assessment - see above Noted that JPL Sentry has posted 2020 XE6 as an impact risk - see above
0530	Grabbed MPEC 2020-Y01 - 2020 XB6 - see above Grabbed MPEC 2020-Y02 - 2020 XC6 - see above Grabbed MPEC 2020-Y03 - 2020 XD6 - see above Grabbed MPEC 2020-Y04 - 2020 XE6 - see above Grabbed MPEC 2020-Y05 - 2020 XF6 - see above Grabbed MPEC 2020-Y06 - 2020 XG6 - see above Grabbed MPEC 2020-Y07 - 2020 XH6 - see above Grabbed MPEC 2020-Y08 - 2020 XJ6 - see above Grabbed MPEC 2020-Y09 - 2020 XK6 - see above

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