2020-01-02 Tracking News

Contents on 2 January '20

Traffic Report -- nine objects
IAU Minor Planet Center
- NEOCP Activity -- 52 listings
- New MPECs -- eight MPECs
Observers -- 38 observers
Impact Risk Monitoring -- four objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1070 risk-listed objects, 54 have had news in the last 31 days. Updated at 2331 UTC on 2 Jan.
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.

Traffic Report on 2 January '20

Nine objects reported inside ten LD

Nine transient natural objects are reported moving within ten lunar distances (LD) of our planet today. Inside Earth's SOI, 2020 AD comes its closest to our planet this time around, reaching 2.33 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
Earth passage	I D	~Size	Distance today	Inside ten LD	Notes
1.74 LD Dec. 30	2019 YL3	10 m	5.29 to 7.44 LD	Dec. 26 - Jan. 4	risk
2.22 LD Dec. 29	2019 YS2	13 m	5.63 to 6.84 LD	Dec. 21 - Jan. 5	NHATS target
2.33 LD today	2020 AD	13 m	2.33 LD	Dec. 30 - Jan. 5	Earth closest at 0912 UTC - DOU

3.27 LD Jan. 4	2019 YB4	15 m	3.80 from 4.65 LD	Dec. 28 - Jan. 11	NHATS target - DOU
3.37 LD today	2020 AC	16 m	3.37 LD	Dec. 26 - Jan. 9	NHATS target, Earth closest at 0655 UTC - DOU
3.7 LD Jan. 10*	2019 YF4	15 m	6.0 from 6.6 LD	Dec. 27 - Jan. 25	EPU +/- 38 mins.*, NHATS target
4.8 LD today*	2019 AE3	12 m	4.8 LD	Dec. 28 - Jan. 7	EPU +/- 1.27 hours*, NHATS target, Earth closest at 1607 UTC

6.69 LD Dec. 29	2020 AB	22 m	8.31 to 9.24 LD	Dec. 24 - tomorrow	DOU
7.35 LD today	2019 YH2	81 m	7.35 LD	Dec. 31 - Jan. 4	Earth closest at 0935 UTC

Approaching - sorted by 10-LD bubble entry date
6.33 LD Jan. 11	2019 WC5	105 m	25.00 from 27.87 LD	Jan. 8 - 13	DOU
6.9 LD Jan. 16*	2019 YD3	21 m	16.2 from 17.2 LD	Jan. 9 - 22	EPU +/- 13 mins.*, NHATS target - DOU
* EPU = Earth passage uncertainty

This report was generated at 2040 UTC with the discovery of already departed 2020 AG (MPEC), which slipped by us at about 8.1 LD on December 22nd (uncertainty +/- 17 minutes), and with follow-up in today's DOU MPEC for approaching objects 2019 YD3 and 2019 WC5, inbound 2019 YB4, passing 2020 AD and 2020 AC, outbound 2020 AB, and seven departed objects: 2019 YA4, 2019 YR3, 2019 YK2, 2019 YA1, and including three risk-listed: 2019 YW2, 2019 YX1, and 2019 XQ2.

Please check out our new standalone "Earth's Busy Neighborhood" page with a traffic report and expanded, interactive traffic tables.

Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting about transient natural objects that approach our planet's gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center. This puts a focus on some of the most important and very best NEO observation work, representative of the much larger NEO discovery and tracking effort. Object temporal distances are derived by A/CC from JPL Horizons data. "LD*" indicates some uncertainty in object passage time and distance. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity on 2 January '20

The MPC's NEO Confirmation Page has 52 listings

When last checked at 2330 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 52 objects listed. Of these, 20 were "one nighters." So far The Tracking News has counted a total of 76 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 2 January '20

Minor Planet Electronic Circulars

As of last check at 2330 UTC, there have been eight MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-A26 time-stamped "03:39 UT" - 2020 AG - see below
MPEC 2020-A27 time-stamped "12:11 UT" - Daily Orbit Update - see below
MPEC 2020-A28 time-stamped "17:43 UT" - 2019 YX5 - see below
MPEC 2020-A29 time-stamped "17:47 UT" - 2019 YY5 - see below
MPEC 2020-A30 time-stamped "17:50 UT" - 2019 YZ5 - see below
MPEC 2020-A31 time-stamped "17:52 UT" - 2019 YA6 - see below
MPEC 2020-A32 time-stamped "19:14 UT" - 2020 AJ - see below
MPEC 2020-A33 time-stamped "20:30 UT" - 2020 AK

MPEC 2020-A33 - "20:30 UT" - 2020 AK

K20A00K 2020 AK (risk listed, H=19.4 ~446m) was picked up at 1457 UT on 1 Jan. by Pan-STARRS 1 (PS1), observing it at Dec. 29.61-64p4 and Jan. 1.62-65p4. This detection was confirmed by Visnjan Obs. (Jan. 2.13-14p4), Schwarzschild Obs. (Jan. 2.17p2), Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Jan. 2.25p3), and Mt. John Obs. (Jan. 2.63-64p4).

MPEC 2020-A32 - "19:14 UT" - 2020 AJ

K20A00J 2020 AJ (H=20.6 ~257m) was picked up at 1453 UT on 2 Jan. by PS1, observing it at Dec. 4.61-64p4, Jan. 1.62-65p3, and 2.62-65p4. This detection was confirmed by Pan-STARRS 2 (PS2) (Dec. 27.64-66p3).

MPEC 2020-A31 - "17:52 UT" - 2019 YA6

K19Y06A 2019 YA6 (small asteroid, H=24.1 ~51m) was picked up at 0946 UT on 31 Dec. by PS1, observing it at Dec. 31.38-42p4. This detection was confirmed by Schiaparelli Obs. (Dec. 31.91-93p2), Visnjan Obs. (Dec. 31.96p3), Magdalena Ridge Obs. (MRO) (Jan. 1.21-23p4), Schwarzschild Obs. (Jan. 1.89-90p3 & 1.95p4), and San Marcello Pistoiese Obs. (Jan. 1.93p2).

MPEC 2020-A30 - "17:50 UT" - 2019 YZ5

K19Y05Z 2019 YZ5 (i=37.2°, H=20.0 ~339m) was picked up at 1349 UT on 30 Dec. by PS2, observing it at Dec. 30.58-60p3 at w=21.48-22.22. This detection was confirmed by Visnjan Obs. (Dec. 31.15-16p3), Astronomical Research Obs. Westfield (Jan. 1.32-33p3), MRO (Jan. 1.49-51p4), and Schwarzschild Obs. (Jan. 2.05-06p3 at V=21.2-6 & 2.21p2 at V=22.4-8).

MPEC 2020-A29 - "17:47 UT" - 2019 YY5

K19Y05Y 2019 YY5 (H=20.6 ~257m) was picked up at 1440 UT on 30 Dec. by PS1, observing it at Dec. 30.61-64p4. This detection was confirmed by Visnjan Obs. (Dec. 31.18-20p3), MRO (Jan. 1.47-50p4), and Mt. John Obs. (Jan. 2.61-62p4).

MPEC 2020-A28 - "17:43 UT" - 2019 YX5

K19Y05X 2019 YX5 (Q=4.291 AU, H=21.1 ~204m) was picked up at 1224 UT on 24 Dec. by PS1, observing it at Dec. 24.52-55p4 at w=21.72-22.09. This detection was confirmed by Visnjan Obs. (Dec. 25.11-13p4), Holmes/CTIO (Dec. 25.32-33p3 at G=22.0-22.1 & Jan. 2.28-29p3 at G=21.4-6), and Schwarzschild Obs. (Jan. 2.19p3).

<< DOU on 2 January '20 >> MPEC 2020-A27 - "12:11 UT" - Daily Orbit Update

Observations of risk-listed objects
K19Y02W 2019 YW2 (small asteroid, arc=8 days, H=23.9 ~56m, close passer) from Oukaimeden Obs. (Dec. 31.03-06p4) and KLENOT (Jan. 1.92-93p14)
K19Y01X 2019 YX1 (small asteroid, arc=11 days, H=24.4 ~45m, close passer) from the Spacewatch 1.8m telescope (Jan. 1.55p2)
K19X02Q 2019 XQ2 (close passer) from Spacewatch 1.8m (Jan. 1.49-53p3 at R=21.8-22.4)
Observations of close-passing objects
K20A00D 2020 AD (arc=1 day, H=27.2 ~12m) from Teplice Obs. (Jan. 1.89p4), KLENOT (Jan. 1.89p20), and Farra d'Isonzo Obs. (Jan. 1.93p3)
K20A00C 2020 AC (arc=1 day, H=26.7 ~15m, NHATS target) from Teplice Obs. (Jan. 1.86-87p6), Dax Obs. (Jan. 1.87-88p4), and Farra d'Isonzo Obs. (Jan. 1.89p6)
K20A00B 2020 AB (arc=2 days, H=26.0 ~21m) from San Marcello Pistoiese Obs. (Jan. 1.82-84p3), Bernezzo Obs. (Jan. 1.85p3), Wildberg Obs. (Jan. 1.85-86p4), and Castelmartini Obs. (Jan. 1.88-90p6)
K19Y04B 2019 YB4 (arc=4 days, H=26.8 ~15m, NHATS target) from KLENOT (Jan. 2.00p7) and Nonndorf Obs. (Jan. 2.03p2)
K19Y04A 2019 YA4 (arc=4 days, H=23.2 ~78m) from KLENOT (Jan. 1.90-91p7) and Steward Obs. Mt. Lemmon Station (Jan. 2.22p4)
K19Y03R 2019 YR3 (arc=2 days, H=24.5 ~43m) from ROASTERR-1 (Dec. 29.88-89p3)
K19Y03D 2019 YD3 (arc=9 days, H=26.0 ~21m, NHATS target) from Steward Mt. Lemmon Sta. (Jan. 2.28-29p4)
K19Y02K 2019 YK2 (arc=4 days, H=28.3 ~7m) from ARO Westfield (Dec. 25.35-37p3 at V=22.2-3)
K19Y01A 2019 YA1 (arc=11 days, H=25.4 ~28m, NHATS target) from ARO Westfield (Dec. 24.18-19p6)
K19W05C 2019 WC5 (arc=36 days, H=22.4 ~112m) from Rokycany Obs. (Jan. 1.81-82p3) and KLENOT (Jan. 1.91-92p8)
Observation campaigns (NHATS targets, radar support)
K20A00E 2020 AE (arc=3 days, H=25.6 ~26m, NHATS) from Farra d'Isonzo Obs. (Jan. 1.94-98p3)
K19Y05Q 2019 YQ5 (arc=2 days, H=25.1 ~32m, NHATS) from San Marcello Pistoiese Obs. (Jan. 1.86p2)
K19Y03T 2019 YT3 (arc=5 days, H=25.6 ~26m, NHATS) from KLENOT (Jan. 1.97p6)
K19Y03S 2019 YS3 (arc=5 days, H=24.7 ~39m, NHATS) from Holmes/CTIO (Jan. 2.04-05p3)
K19Y01T 2019 YT1 (arc=13 days, H=25.4 ~28m, NHATS) from Steward Mt. Lemmon Sta. (Jan. 2.22-23p4 at G=20.9-22.1)
K19Y01G 2019 YG1 (arc=14 days, H=25.3 ~29m, NHATS) from the Spacewatch 0.9m telescope (Jan. 2.22-23p2)
K19Y01E 2019 YE1 (arc=12 days, H=25.2 ~31m, NHATS) from ARO Westfield (Dec. 24.19-20p6)
K19Y01D 2019 YD1 (arc=13 days, H=24.9 ~35m, NHATS) from ARO Westfield (Dec. 24.14-15p6) and Spacewatch 0.9m (Jan. 2.27-28p3)
K19Y00V 2019 YV (arc=14 days, H=23.7 ~62m, NHATS) from ARO Westfield (Dec. 24.12-13p3) and Steward Mt. Lemmon Sta. (Jan. 2.19p4)
K19X02Z 2019 XZ2 (arc=30 days, H=24.7 ~39m, NHATS) from Holmes/CTIO (Jan. 2.25p3)
K19W04T 2019 WT4 (arc=34 days, H=23.9 ~56m, NHATS) from Holmes/CTIO (Jan. 2.21-23p3)
K11U63V 2011 UV63 (arc=3 opp, H=21.7 ~155m, NHATS) from ARO Westfield (Jan. 1.41-42p3 at V=22.0-22.1)
f8849 418849 2008 WM64 (radar) from Wishing Star Obs. (Jan. 2.13-14p3)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K19Y05U 2019 YU5 (arc=1 day, H=24.1 ~51m) from San Marcello Pistoiese Obs. (Jan. 1.91-92p2)
K19Y04E 2019 YE4 (arc=4 days, H=22.6 ~102m) from PS1 (Jan. 1.57-61p4)
K19Y03M 2019 YM3 (arc=5 days, H=23.2 ~78m) from ROASTERR-1 (Dec. 30.74p3) and M57 Obs. (Jan. 2.00-02p6)
K19Y03G 2019 YG3 (arc=9 days, H=22.3 ~117m) from Holmes/CTIO (Jan. 2.10-11p3)
K19Y01Q 2019 YQ1 (i=37.1°, arc=14 days, H=22.1 ~129m) from Holmes/CTIO (Jan. 2.12-13p3)
K19Y00W 2019 YW (arc=14 days, H=23.4 ~71m) from KLENOT (Jan. 1.98p9)
K19Y00C 2019 YC (arc=17 days, H=22.9 ~89m) from Holmes/CTIO (Jan. 2.17-18p3)
K19X03P 2019 XP3 (arc=17 days, H=24.4 ~45m) from ARO Westfield (Dec. 24.15-16p5)
K19X02P 2019 XP2 (Q=4.191 AU, arc=26 days, H=23.3 ~74m) from ARO Westfield (Jan. 1.41-42p3 at V=22.0-22.3)
K19X01L 2019 XL1 (arc=30 days, H=22.1 ~129m) from KLENOT (Jan. 1.99p5)
K19X00X 2019 XX (arc=30 days, H=23.6 ~65m) from ARO Westfield (Dec. 24.20p5), M57 Obs. (Jan. 1.90-94p4), and Squirrel Valley Obs. (Jan. 2.06-08p3)
K19V01O 2019 VO1 (arc=68 days, H=22.2 ~123m) from Holmes/CTIO (Jan. 2.06-07p3)
K19Y02V 2019 YV2 (q=0.126 AU, arc=10 days, H=21.9 ~141m) from Holmes/CTIO (Jan. 2.05-06p4)
K19Y02P 2019 YP2 (i=36.3°, arc=12 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (Jan. 2.23p4)
K19Y00A 2019 YA (arc=17 days, H=21.8 ~148m) from ARO Westfield (Dec. 24.18p6) and Squirrel Valley Obs. (Jan. 2.04-05p3)
K19W06C 2019 WC6 (arc=32 days, H=22.0 ~135m) from PS1 (Jan. 1.29-32p3)
K19W05D 2019 WD5 (arc=37 days, H=21.8 ~148m) from KLENOT (Jan. 2.00p9)
Observations of other objects
K19Y04K 2019 YK4 (arc=4 days, H=20.3 ~295m) from Rokycany Obs. (Jan. 1.77p3), KLENOT (Jan. 1.93p7), Nonndorf Obs. (Jan. 1.98-99p5), and M57 Obs. (Jan. 2.04-05p3)
K19Y03Z 2019 YZ3 (arc=5 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (Jan. 2.19p4)
K19Y03V 2019 YV3 (arc=5 days, H=20.8 ~234m) from Holmes/CTIO (Jan. 2.21-22p3)
K19Y03U 2019 YU3 from KLENOT (Jan. 1.98p4)
K19Y02D 2019 YD2 (arc=13 days, H=21.6 ~162m) from KLENOT (Jan. 1.96-97p9)
K19Y01L 2019 YL1 (arc=14 days, H=21.6 ~162m) from the Catalina Sky Survey (CSS) (Jan. 1.22-24p4) and Holmes/CTIO (Jan. 2.20-21p3)
K19X03J 2019 XJ3 (arc=23 days, H=20.0 ~339m) from Holmes/CTIO (Jan. 2.14-15p3) and the Mt. Lemmon Survey (MLS) (Jan. 2.28-29p3)
K19X03G 2019 XG3 (Q=4.621 AU, arc=23 days, H=18.8 ~589m) from Holmes/CTIO (Jan. 2.23-24p3)
K19X03C 2019 XC3 (Q=4.041 AU, arc=25 days, H=20.2 ~309m) from KLENOT (Jan. 1.93-94p4)
K19X02W 2019 XW2 (arc=25 days, H=19.6 ~407m) from ARO Westfield (Dec. 24.22-23p9) and Wishing Star Obs. (Jan. 2.08-09p3)
K19X02J 2019 XJ2 (Q=4.003 AU, arc=22 days, H=21.2 ~195m) from ARO Westfield (Dec. 25.42-44p3 at V=22.1-3)
K19X02C 2019 XC2 (arc=24 days, H=19.1 ~513m) from ARO Westfield (Dec. 25.08-09p3 at V=22.0-22.3)
K19X02B 2019 XB2 (arc=30 days, H=20.6 ~257m) from Holmes/CTIO (Jan. 2.19-20p3)
K19X00Q 2019 XQ from Spacewatch 1.8m (Jan. 2.07-08p2 at R=21.9-22.1)
K19W03F 2019 WF3 (arc=38 days, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (Jan. 2.29p3)
K19W02C 2019 WC2 (arc=88 days, H=21.2 ~195m) from PS1 (Jan. 1.45-49p4)
K19W01F 2019 WF1 (Q=5.951 AU, arc=45 days, H=19.7 ~389m) from PS1 (Jan. 1.23-24p3)
K19V06N 2019 VN6 (arc=58 days, H=17.9 ~891m) from PS1 (Jan. 1.56-60p4)
K19V06F 2019 VF6 (arc=69 days, H=21.1 ~204m) from Holmes/CTIO (Jan. 2.07-08p3) and Spacewatch 0.9m (Jan. 2.20-22p3)
K19V04U 2019 VU4 (arc=52 days, H=19.9 ~355m) from ARO Westfield (Dec. 25.18-20p3 at V=21.7-22.2)
K19U15J 2019 UJ15 (arc=74 days, H=19.5 ~426m) from CSS (Jan. 1.09-11p2)
K19U14A 2019 UA14 (i=72.0°, Q=6.239 AU, arc=67 days, H=18.8 ~589m) from Holmes/CTIO (Jan. 2.09-11p3)
K19U11B 2019 UB11 (Q=4.595 AU, arc=147 days, H=20.6 ~257m) from ARO Westfield (Dec. 24.11-12p8) and KLENOT (Jan. 1.90p8)
K19U02J 2019 UJ2 (arc=75 days, H=19.5 ~426m) from Holmes/CTIO (Jan. 2.06p3)
K19U00O 2019 UO (Q=4.342 AU, arc=85 days, H=20.1 ~323m) from ROASTERR-1 (Dec. 30.72-73p2)
K19S06H 2019 SH6 (arc=2 opp, H=20.0 ~339m) from Nonndorf Obs. (Jan. 2.00-01p5)
K19R00D 2019 RD (Q=4.241 AU, arc=217 days, H=19.5 ~426m) from MLS (Jan. 2.21-23p4)
K19O00J 2019 OJ (i=39.2°, Q=5.810 AU, arc=168 days, H=19.0 ~537m) from PS1 (Jan. 1.62-65p3 at w=22.1-2)
K19N06T 2019 NT6 (arc=168 days, H=20.6 ~257m) from ARO Westfield (Dec. 25.07p2 at V=22.0-22.2)
K19L05K 2019 LK5 (arc=2 opp, H=18.9 ~562m) from MLS (Jan. 2.23-25p4)
K18B00P 2018 BP (arc=3 opp, H=20.7 ~245m) from CSS (Jan. 1.29-30p3)
K18A02G 2018 AG2 (arc=4 opp, H=19.9 ~355m) from PS1 (Jan. 1.63-65p3 at w=21.9-22.1)
K16X23O 2016 XO23 (arc=5 opp, H=20.7 ~245m) from M57 Obs. (Jan. 1.97-99p3)
K16L08M 2016 LM8 (arc=4 opp, H=18.8 ~589m) from Spacewatch 0.9m (Jan. 2.07-08p2)
K15HB6U 2015 HU116 (arc=3 opp, H=19.9 ~355m) from PS1 (Jan. 1.40-44p4)
K14Y43U 2014 YU43 (arc=3 opp, H=19.7 ~389m) from Oukaimeden Obs. (Dec. 31.10-12p4) and PS1 (Jan. 1.56-60p4)
K14N64W 2014 NW64 (arc=3 opp, H=20.3 ~295m) from PS1 (Jan. 1.63-65p3 at w=22.2-8)
K14N64F 2014 NF64 (Q=4.904 AU, arc=5 opp, H=18.2 ~776m) from CSS (Jan. 1.18-19p4), Wishing Star Obs. (Jan. 2.15p3), and MLS (Jan. 2.28-30p4)
K14D23H 2014 DH23 (arc=3 opp, H=21.3 ~186m) from ARO Westfield (Jan. 1.44-45p3 at V=22.1-4)
K13U10V 2013 UV10 (arc=3 opp, H=19.7 ~389m) from MLS (Jan. 2.23-25p4)
K13P02V 2013 PV2 (arc=3 opp, H=20.0 ~339m) from SATINO-1 (Dec. 24.79-80p3)
K13C89L 2013 CL89 (arc=5 opp, H=19.4 ~446m) from ARO Westfield (Dec. 25.43-44p3 at V=21.7-22.3)
K11W15N 2011 WN15 (q=0.173 AU, arc=6 opp, H=19.7 ~389m) from Terskol Obs. (Dec. 29.69-73p11)
K08O01X 2008 OX1 (arc=4 opp, H=21.6 ~162m) from ARO Westfield (Dec. 25.34-35p3 at V=22.1-3)
K07J22H 2007 JH22 (arc=2 opp, H=21.7 ~155m) from PS1 (Jan. 1.63-65p3)
K06K86Y 2006 KY86 (arc=4 opp, H=19.8 ~371m) from CSS (Jan. 1.24-26p3) and PS1 (Jan. 1.39-43p3)
K05Y03N 2005 YN3 (i=36.4°, arc=4 opp, H=19.1 ~513m) from PS1 (Jan. 1.22-24p3)
K05X66P 2005 XP66 (Q=4.421 AU, arc=2 opp, H=20.1 ~323m) from PS1 (Jan. 1.34-38p4)
J96A02E 1996 AE2 (i=37.4°, arc=4 opp, H=20.2 ~309m) from ATLAS Haleakala (Jan. 1.51-53p4)
p6986 516986 2012 QP10 from CSS (Jan. 1.24-26p3)
p6155 516155 2016 DP from ARO Westfield (Dec. 25.39-40p3 at V=22.1-5)
p2245 512245 2016 AU8 from ATLAS Mauna Loa (Jan. 1.56-59p4)
k7317 467317 2000 QW7 from PS1 (Jan. 1.37-39p2)
j8732 458732 2011 MD5 from CSS (Jan. 1.15-17p4)
j8452 458452 2011 BR15 from ATLAS Haleakala (Jan. 1.47-49p4)
j5322 455322 2002 NX18 from ATLAS Mauna Loa (Jan. 1.57-61p4)
h7316 437316 2013 OS3 from ROASTERR-1 (Dec. 30.86-87p3)
g8223 428223 2006 WW from CSS (Jan. 1.07-08p3)
f2976 412976 1987 WC from ARO Westfield (Jan. 1.43-45p3 at V=22.1-2)
c1906 381906 2010 CL19 from PS1 (Jan. 1.56-60p4)
b4188 374188 2005 AD3 from Oukaimeden Obs. (Dec. 28.12-15p4)
Y9063 349063 2006 XA from CSS (Jan. 1.31-32p4) and ATLAS Haleakala (Jan. 1.59-62p4)
X8347 338347 2002 XG4 from Oukaimeden Obs. (Dec. 28.90-92p4) and Wishing Star Obs. (Jan. 1.97-98p3)
X3555 333555 2005 VY17 from Wishing Star Obs. (Jan. 1.94p3)
W9340 329340 2001 LM5 from CSS (Jan. 1.28-30p4)
U7070 307070 2002 AV31 from CSS (Jan. 1.31-32p3)
Q7940 267940 2004 EM20 from PS1 (Jan. 1.45-49p4)
N2382 232382 2003 BT47 from ARO Westfield (Dec. 25.17-18p2 at V=22.1)
L4088 214088 2004 JN13 from ATLAS Mauna Loa (Jan. 1.50-52p4)
K3015 203015 1999 YF3 from ATLAS Mauna Loa (Jan. 1.62-65p4)
G4221 164221 2004 QE20 from PS1 (Jan. 1.57-61p4)
G3696 163696 2003 EB50 from Wishing Star Obs. (Jan. 2.11p3)
G3373 163373 2002 PZ39 from ATLAS Mauna Loa (Jan. 1.54-57p4)
G3081 163081 2002 AG29 from CSS (Jan. 1.20-21p4)
G2825 162825 2001 BO61 from CSS (Jan. 1.30-32p4)
F9504 159504 2000 WO67 from Oukaimeden Obs. (Dec. 28.02-05p4 & 30.96-99p4)
F4988 154988 2004 XN35 from PS1 (Jan. 1.56-60p4)
F3842 153842 2001 XT30 from CSS (Jan. 1.14-15p4)
F2679 152679 1998 KU2 from PS1 (Jan. 1.56-59p3)
D8847 138847 2000 VE62 from ATLAS Haleakala (Jan. 1.49-51p4)
D8175 138175 2000 EE104 from PS1 (Jan. 1.45-49p4)
D8013 138013 2000 CN101 from MASTER-II Sutherland (Jan. 1.01-03p2), MASTER OAFA Obs. (Jan. 1.27-28p2), and CSS (Jan. 1.28-30p4)
D7924 137924 2000 BD19 from ATLAS Mauna Loa (Jan. 1.56-58p3)
D7170 137170 1999 HF1 from Muensterschwarzach Obs. (Dec. 31.24p3)
A6589 106589 2000 WN107 from CSS (Jan. 1.14-15p4)
A6538 106538 2000 WK63 from CSS (Jan. 1.22-23p4)
A5141 105141 2000 NF11 from PS1 (Jan. 1.39-43p4)
99248 99248 2001 KY66 from San Vito Obs. (Jan. 1.82-83p3)
85236 85236 1993 KH from Wishing Star Obs. (Jan. 1.96p3)
54686 54686 2001 DU8 from ATLAS Haleakala (Jan. 1.56-57p4)
52768 52768 1998 OR2 from ATLAS Mauna Loa (Jan. 1.53-55p4)
36284 36284 2000 DM8 from ATLAS Mauna Loa (Jan. 1.56-59p4)
35107 35107 1991 VH from ATLAS Haleakala (Jan. 1.58-59p4)
34613 34613 2000 UR13 from ATLAS Mauna Loa (Jan. 1.54-57p4)
22771 22771 1999 CU3 from PS1 (Jan. 1.29-32p3)
20826 20826 2000 UV13 from Muensterschwarzach Obs. (Dec. 31.23-24p4)
18882 18882 1999 YN4 from ATLAS Haleakala (Jan. 1.54p3)
18106 18106 Blume (2000 NX3) from MLS (Jan. 1.07-08p4)
13553 13553 Masaakikoyama (1992 JE) from PS1 (Jan. 1.56-60p8)
12923 12923 Zephyr (1999 GK4) from PS1 (Jan. 1.57-61p4)
10145 10145 1994 CK1 from ATLAS Mauna Loa (Jan. 1.57-61p8)
07088 7088 Ishtar (1992 AA) from ATLAS Mauna Loa (Jan. 1.56-60p4)
05626 5626 1991 FE from ATLAS Mauna Loa (Jan. 1.57-60p3 & 1.67p1)
05324 5324 Lyapunov (1987 SL) from ARO Westfield (Dec. 25.31-33p3 at V=22.0-22.1)
03102 3102 Krok (1981 QA) from MLS (Jan. 2.23-24p3)
02059 2059 Baboquivari (1963 UA) from CSS (Jan. 1.09-11p4)
01866 1866 Sisyphus (1972 XA) from MASTER-II Blagoveshchensk (Dec. 31.59p2 & 31.77p2)
01864 1864 Daedalus (1971 FA) from ATLAS Mauna Loa (Jan. 1.55-59p4)
01627 1627 Ivar (1929 SH) from ATLAS Mauna Loa (Jan. 1.57-61p4)

MPEC 2020-A26 - "03:39 UT" - 2020 AG

K20A00G 2020 AG (Earth MOID=7.9 LD, H=26.2 ~19m, NHATS target) was picked up at 1045 UT on 1 Jan. by PS1, observing it at Dec. 30.50-53p4 and Jan. 1.45-48p3. This detection was confirmed by Visnjan Obs. (Jan. 1.82-83p2 & 1.97-98p3) and Schwarzschild Obs. (Jan. 1.94-95p3).

Observers on 2 January '20

A total of 38 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 24 in MPECs 2020-A27 & 2020-A30 -- 2019 YZ5, 2019 YV, 2019 YK2, 2019 YE1, 2019 YD1, 2019 YA1, 2019 YA, 2019 XX, 2019 XW2, 2019 XP3, 2019 XP2, 2019 XJ2, 2019 XC2, 2019 VU4, 2019 UB11, 2019 NT6, 2014 DH23, 2013 CL89, 2011 UV63, 2008 OX1, 516155, 412976, 232382, 5324
`T05`	ATLAS Haleakala in Hawaii, 7 in MPEC 2020-A27 -- 1996 AE2, 54686, 458452, 35107, 349063, 18882, 138847
`T08`	ATLAS Mauna Loa in Hawaii, 14 in MPEC 2020-A27 -- 52768, 512245, 455322, 36284, 34613, 214088, 203015, 163373, 137924, 10145, 7088, 5626, 1864, 1627
`C77`	Bernezzo Obs. in Italy, 1 in MPEC 2020-A27 -- 2020 AB
`160`	Castelmartini Obs. in Italy, 1 in MPEC 2020-A27 -- 2020 AB
`703`	Catalina Sky Survey (CSS) in Arizona, 18 in MPEC 2020-A27 -- 2019 YL1, 2019 UJ15, 2018 BP, 2014 NF64, 2006 KY86, 516986, 458732, 428223, 349063, 329340, 307070, 163081, 162825, 153842, 138013, 106589, 106538, 2059
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 18 in MPECs 2020-A27, 2020-A28 & 2020-A33 -- 2020 AK, 2019 YX5, 2019 YV3, 2019 YV2, 2019 YS3, 2019 YQ1, 2019 YL1, 2019 YG3, 2019 YC, 2019 XZ2, 2019 XJ3, 2019 XG3, 2019 XB2, 2019 WT4, 2019 VO1, 2019 VF6, 2019 UJ2, 2019 UA14
`958`	Dax Obs. in France, 1 in MPEC 2020-A27 -- 2020 AC
`595`	Farra d'Isonzo Obs. in Italy, 3 in MPEC 2020-A27 -- 2020 AE, 2020 AD, 2020 AC
`246`	KLENOT in the Czech Republic, 14 in MPEC 2020-A27 -- 2020 AD, 2019 YW2, 2019 YW, 2019 YU3, 2019 YT3, 2019 YK4, 2019 YD2, 2019 YB4, 2019 YA4, 2019 XL1, 2019 XC3, 2019 WD5, 2019 WC5, 2019 UB11
`K38`	M57 Obs. in Italy, 4 in MPEC 2020-A27 -- 2019 YM3, 2019 YK4, 2019 XX, 2016 XO23
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2020-A29, 2020-A30 & 2020-A31 -- 2019 YZ5, 2019 YY5, 2019 YA6
`W92`	MASTER OAFA Obs., 1 in MPEC 2020-A27 -- 138013
`D54`	MASTER-II Blagoveshchensk in Russia, 1 in MPEC 2020-A27 -- 1866
`K95`	MASTER-II Sutherland in South Africa, 1 in MPEC 2020-A27 -- 138013
`474`	Mt. John Obs. in New Zealand, 2 in MPECs 2020-A29 & 2020-A33 -- 2020 AK, 2019 YY5
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 7 in MPEC 2020-A27 -- 2019 XJ3, 2019 RD, 2019 LK5, 2014 NF64, 2013 UV10, 18106, 3102
`K74`	Muensterschwarzach Obs. in Germany, 2 in MPEC 2020-A27 -- 20826, 137170
`C47`	Nonndorf Obs. in Austria, 3 in MPEC 2020-A27 -- 2019 YK4, 2019 YB4, 2019 SH6
`J43`	Oukaimeden Obs. in Morocco, 5 in MPEC 2020-A27 -- 2019 YW2, 2014 YU43, 374188, 338347, 159504
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 31 in MPECs 2020-A26, 2020-A27, 2020-A28, 2020-A29, 2020-A31, 2020-A32 & 2020-A33 -- 2020 AK, 2020 AJ, 2020 AG, 2019 YY5, 2019 YX5, 2019 YE4, 2019 YA6, 2019 WF1, 2019 WC6, 2019 WC2, 2019 VN6, 2019 OJ, 2018 AG2, 2015 HU116, 2014 YU43, 2014 NW64, 2007 JH22, 2006 KY86, 2005 YN3, 2005 XP66, 467317, 381906, 267940, 22771, 164221, 154988, 152679, 138175, 13553, 12923, 105141
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 2 in MPECs 2020-A30 & 2020-A32 -- 2020 AJ, 2019 YZ5
`L04`	ROASTERR-1 in Romania, 4 in MPEC 2020-A27 -- 2019 YR3, 2019 YM3, 2019 UO, 437316
`K61`	Rokycany Obs. in the Czech Republic, 2 in MPEC 2020-A27 -- 2019 YK4, 2019 WC5
`104`	San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2020-A27 & 2020-A31 -- 2020 AB, 2019 YU5, 2019 YQ5, 2019 YA6
`233`	San Vito Obs. in Italy, 1 in MPEC 2020-A27 -- 99248
`C95`	SATINO-1 in France, 1 in MPEC 2020-A27 -- 2013 PV2
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2020-A31 -- 2019 YA6
`033`	Schwarzschild Obs. in Germany, 5 in MPECs 2020-A26, 2020-A28, 2020-A30, 2020-A31 & 2020-A33 -- 2020 AK, 2020 AG, 2019 YZ5, 2019 YX5, 2019 YA6
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2020-A27 -- 2019 YG1, 2019 YD1, 2019 VF6, 2016 LM8
`291`	Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2020-A27 -- 2019 YX1, 2019 XQ2, 2019 XQ
`W34`	Squirrel Valley Obs. in North Carolina, 2 in MPEC 2020-A27 -- 2019 YA, 2019 XX
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 7 in MPEC 2020-A27 -- 2019 YZ3, 2019 YV, 2019 YT1, 2019 YP2, 2019 YD3, 2019 YA4, 2019 WF3
`K62`	Teplice Obs. in the Czech Republic, 2 in MPEC 2020-A27 -- 2020 AD, 2020 AC
`B18`	Terskol Obs. in Russia, 1 in MPEC 2020-A27 -- 2011 WN15
`L01`	Visnjan Obs., 6 in MPECs 2020-A26, 2020-A28, 2020-A29, 2020-A30, 2020-A31 & 2020-A33 -- 2020 AK, 2020 AG, 2019 YZ5, 2019 YY5, 2019 YX5, 2019 YA6
`198`	Wildberg Obs. in Germany, 1 in MPEC 2020-A27 -- 2020 AB
`I15`	Wishing Star Obs. in Rhode Island, 7 in MPEC 2020-A27 -- 2019 XW2, 2014 NF64, 85236, 418849, 338347, 333555, 163696

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

Impact Risk Monitoring on 2 January '20

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2330 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 AK	NEODyS	2330	2025-2116	9	2.01e-09	-5.71	-6.04	0	NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2019-12-29.608 to 2020-01-02.638."
2020 AK	JPL Sentry	2130	2025-2116	19	1.58134e-08	-4.46	-4.77	0	JPL: Computed at 13:29 today Pacific time based on 21 observations spanning 4.0301 days (2019-Dec-29.60694 to 2020-Jan-02.637089). Diameter approximately 0.501 km. from weighted mean H=19.15.

2019 YW2	JPL Sentry	1600	2119-2119	1	5.225e-08	-7.00	-7.00	0	JPL: Computed at 07:02 today Pacific time based on 64 observations spanning 8.4127 days (2019-Dec-24.513641 to 2020-Jan-01.92634). Diameter approximately 0.059 km. from weighted mean H=23.81.
2019 YW2	NEODyS	1600	2113-2115	2	8.28e-08	-6.80	-6.89	0	NEODyS: "Based on 65 optical observations (of which 2 are rejected as outliers) from 2019-12-24.514 to 2020-01-01.927."

2019 YX1	JPL Sentry	1600	2081-2081	4	3.0369e-05	-4.44	-4.68	0	JPL: Computed at 07:00 today Pacific time based on 46 observations spanning 11.229 days (2019-Dec-21.325253 to 2020-Jan-01.55464). Diameter approximately 0.044 km. from weighted mean H=24.41.
2019 YX1	NEODyS	1600	2081-2102	11	1.09e-04	-3.90	-4.33	0	NEODyS: "Based on 46 optical observations (of which 1 are rejected as outliers) from 2019-12-21.326 to 2020-01-01.555."

2019 XQ2	JPL Sentry	1600	2084-2084	1	3.202e-08	-7.54	-7.54	0	JPL: Computed at 06:59 today Pacific time based on 41 observations spanning 1.8810 days (2019-Dec-06.40195 to 2019-Dec-08.282962). Diameter approximately 0.037 km. from weighted mean H=24.78.

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 2 January '20

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

2330	Noted that NEODyS has posted 2020 AK as an impact risk - see above
2130	Noted that JPL Sentry has posted 2020 AK as an impact risk - see above
2101	Grabbed MPEC 2020-A33 - 2020 AK - see above
2040	Generated Traffic Report
1930	Grabbed MPEC 2020-A32 - 2020 AJ - see above
1800	Grabbed MPEC 2020-A28 - 2019 YX5 - see above Grabbed MPEC 2020-A29 - 2019 YY5 - see above Grabbed MPEC 2020-A30 - 2019 YZ5 - see above Grabbed MPEC 2020-A31 - 2019 YA6 - see above
1600	Noted that JPL Sentry has updated its 2019 XQ2 risk assessment - see above Noted that JPL Sentry has updated its 2019 YW2 risk assessment - see above Noted that NEODyS has updated its 2019 YW2 risk assessment - see above Noted that JPL Sentry has updated its 2019 YX1 risk assessment - see above Noted that NEODyS has updated its 2019 YX1 risk assessment - see above Grabbed MPEC 2020-A27 - Daily Orbit Update - see above
0434	Grabbed MPEC 2020-A26 - 2020 AG - see above

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