2020-12-10 Tracking News

Contents on 10 December '20

IAU Minor Planet Center
- NEOCP Activity -- 91 listings
- New MPECs -- fourteen MPECs
Observers -- 35 observers
Impact Risk Monitoring -- thirteen objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1227 risk-listed objects, 139 have had news in the last 31 days. Updated at 1741 UTC on 10 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 10 December '20

The MPC's NEO Confirmation Page has 91 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 91 objects listed. Of these, 54 were "one nighters." So far The Tracking News has counted a total of 105 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 10 December '20

Minor Planet Electronic Circulars

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

MPEC 2020-X91 time-stamped "00:33 UT" - 2015 XY169 - see below
MPEC 2020-X92 time-stamped "12:20 UT" - Daily Orbit Update - see below
MPEC 2020-X93 time-stamped "13:25 UT" - 2020 XR2 - see below
MPEC 2020-X94 time-stamped "13:27 UT" - 2016 LD9 - see below
MPEC 2020-X95 time-stamped "13:29 UT" - 2020 XS2 - see below
MPEC 2020-X96 time-stamped "13:30 UT" - 2020 XT2 - see below
MPEC 2020-X97 time-stamped "15:00 UT" - 2019 CT1 - see below
MPEC 2020-X98 time-stamped "19:17 UT" - 2020 WA6 - see below
MPEC 2020-X99 time-stamped "19:20 UT" - 2010 KQ10 - see below
MPEC 2020-X100 time-stamped "19:41 UT" - 2003 YR1 - see below
MPEC 2020-X101 time-stamped "20:22 UT" - 2020 XV2 - see below
MPEC 2020-X102 time-stamped "20:24 UT" - 2020 XW2 - see below
MPEC 2020-X103 time-stamped "21:10 UT" - 2018 XE4 - see below
MPEC 2020-X104 time-stamped "22:53 UT" - 2006 WG129

MPEC 2020-X104 - "22:53 UT" - 2006 WG129

K06WC9G 2006 WG129 (H=20.6 ~257m) from Pan-STARRS 1 (PS1) (2013 Dec. 4.63-64p2 at G=20.63-80, 2013 Dec. 18.63p1 at G=20.52, 2014 Jan. 1.65p1 at G=21.18, 2014 May 19.37-41p3 at G=21.08-71, 2014 June 2.32-34p2 at G=21.91-22.11 & Nov. 27.52p2 at G=19.76-20.18), Pan-STARRS 2 (PS2) (Nov. 11.53-56p3 & 14.66p1), and ATLAS Mauna Loa (Dec. 10.60-65p4)

MPEC 2020-X103 - "21:10 UT" - 2018 XE4

K18X04E 2018 XE4 (Earth MOID=3.0 LD, H=26.3 ~19m) from PS2 (Dec. 9.40-43p3 at G=21.48-22.34) and PS1 (Dec. 10.28-30p3 at w=21.84-22.04)

MPEC 2020-X102 - "20:24 UT" - 2020 XW2

K20X02W 2020 XW2 (small asteroid, H=24.9 ~35m) was picked up at 0538 UT on 7 Dec. by PS1, observing it at Dec. 7.24-28p4 at w=21.26-22.41. This detection was confirmed by the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Dec. 8.12-13p3), the Spacewatch 1.8m telescope (Dec. 9.38-40p2), Astronomical Research Obs. Westfield (Dec. 10.10-11p3), and Dave Balam via Plaskett 1.8m Telescope (Dec. 10.14-15p6).

MPEC 2020-X101 - "20:22 UT" - 2020 XV2

K20X02V 2020 XV2 (small asteroid, Q=4.617 AU, H=23.5 ~68m) was picked up at 0730 UT on 9 Dec. by the Mt. Lemmon Survey (MLS), observing it at Dec. 9.31-33p4. This detection was confirmed by Steward Obs. Mt. Lemmon Station (Dec. 9.40-41p3), the Spacewatch 0.9m telescope (Dec. 9.41p3), Mt. John Obs. (Dec. 9.61-62p4 & 10.56p3), and Visnjan Obs. (Dec. 9.99-00p4).

MPEC 2020-X100 - "19:41 UT" - 2003 YR1

K03Y01R 2003 YR1 (small asteroid, H=22.1 ~129m) from MLS (Dec. 9.25-27p4 at G=20.55-21.19 & 10.17p3 at G=21.40-22.06), Steward Mt. Lemmon Sta. (Dec. 9.32-33p3), and Mt. John Obs. (Dec. 9.57-58p2)

MPEC 2020-X99 - "19:20 UT" - 2010 KQ10

K10K10Q 2010 KQ10 (Earth MOID=8.1 LD, H=21.6 ~162m) from PS1 (Nov. 14.54p1 at G=23.37, 19.53-56p4 at G=21.99-22.96 & Dec. 10.27-31p4 at w=21.56-22.09) and PS2 (Dec. 7.45p1)

MPEC 2020-X98 - "19:17 UT" - 2020 WA6

K20W06A 2020 WA6 (H=20.0 ~339m) was picked up at 0918 UT on 17 Nov. by MLS, observing it at Nov. 17.39-40p3. This detection was confirmed by PS1 (2018 June 15.38-41p3 & Dec. 10.33-37p7), PS2 (Dec. 7.32-34p3), Steward Mt. Lemmon Sta. (Dec. 9.18-19p4), and Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Dec. 9.18-20p3).

MPEC 2020-X97 - "15:00 UT" - 2019 CT1

K19C01T 2019 CT1 (borderline-small, H=22.0 ~135m) from UH/Tholen NEO Follow-Up 2.24m Telescope (Oct. 16.59p1 at G=23.16 & Dec. 9.64p1 at G=22.86)

MPEC 2020-X96 - "13:30 UT" - 2020 XT2

K20X02T 2020 XT2 (small asteroid, Earth MOID=5.1 LD, H=24.9 ~35m) was picked up at 0735 UT on 8 Dec. by MLS, observing it at Dec. 8.32-33p3 and 9.29-31p4. This detection was confirmed by PS2 (Dec. 8.35-39p4), Steward Mt. Lemmon Sta. (Dec. 8.38p4 & 9.24p4), Holmes/CTIO (Dec. 9.21-22p3), and Mt. John Obs. (Dec. 9.51p4 & 10.54-55p3).

MPEC 2020-X95 - "13:29 UT" - 2020 XS2

K20X02S 2020 XS2 (small asteroid, Q=4.169 AU, H=24.9 ~35m) was picked up at 0605 UT on 8 Dec. by PS1, observing it at Dec. 8.25-29p3. This detection was confirmed by MLS (Dec. 5.32-33p2), Tebbutt Obs. (Dec. 9.14-15p2 & 10.17-19p3), Steward Mt. Lemmon Sta. (Dec. 9.14-15p4), ARO Westfield (Dec. 9.19-20p2), and Farpoint Obs. (Dec. 10.11-14p3).

MPEC 2020-X94 - "13:27 UT" - 2016 LD9

K16L09D 2016 LD9 (small asteroid, Earth MOID=2.1 LD, H=22.4 ~112m) from MLS (Nov. 23.29-30p3 & Dec. 5.33-35p4), the Bok Telescope (Dec. 7.29-31p4), Spacewatch 1.8m (Dec. 7.35-36p3, 8.19-20p3 & 9.07p3), CSS-Kuiper (Dec. 7.38p3 & 8.13-14p4), program code 1 via Schwarzschild Obs. (Dec. 8.74-75p3), Tebbutt Obs. (Dec. 9.16-18p3 & 10.15-16p3), and Steward Mt. Lemmon Sta. (Dec. 9.16-17p4)

MPEC 2020-X93 - "13:25 UT" - 2020 XR2

K20X02R 2020 XR2 (H=21.4 ~178m) was picked up at 0805 UT on 7 Dec. by Bok Tel., observing it at Dec. 7.34-35p8. This detection was confirmed by MLS (Nov. 23.31-32p3 at G=21.5-22.1 & Dec. 4.30-31p2), Spacewatch 1.8m (Dec. 7.37-38p3 at R=21.4-5, 8.46p2 at R=21.8-22.2 & 9.15-16p2 at R=21.5-6), CSS-Kuiper (Dec. 7.40-41p4 & 8.19-20p4), Steward Mt. Lemmon Sta. (Dec. 9.15-16p3), and ARO Westfield (Dec. 10.16p2).

<< DOU on 10 December '20 >> MPEC 2020-X92 - "12:20 UT" - Daily Orbit Update

Observations of risk-listed objects
K20X00Z 2020 XZ (small asteroid, arc=4 days, H=26.2 ~19m) from Tholen 2.24m (Dec. 9.65p1)
K20X00G 2020 XG (small asteroid, arc=5 days, H=28.1 ~8m, close passer, NHATS target) from Spacewatch 1.8m (Dec. 9.42-45p3) and Tholen 2.24m (Dec. 9.49p1 at G=22.77)
K20X00E 2020 XE (small asteroid, Q=4.475 AU, arc=5 days, H=26.2 ~19m, close passer) from Tholen 2.24m (Dec. 9.50p2)
K20W05U 2020 WU5 (i=41.6°, arc=10 days, H=18.8 ~589m) from Tholen 2.24m (Dec. 9.66p1)
K20W03Z 2020 WZ3 (small asteroid, arc=15 days, H=26.2 ~19m, NHATS target) from ARO Westfield (Dec. 5.24-25p2 at V=22.2-3)
K20S02A 2020 SA2 (small asteroid, arc=3 days, H=28.1 ~8m, close passer) from ARO Westfield (Sept. 22.16-17p3 at V=22.0-22.2)
99942 99942 Apophis (2004 MN4) (NHATS target) from program code 8 via Simeis Obs. (Dec. 8.15p2)
Observations of recently (no longer) risk-listed objects
K20W01Q 2020 WQ1 (small asteroid, arc=25 days, H=22.9 ~89m) from Holmes/CTIO (Dec. 5.18-19p3 & 9.27-28p3)
K20W00G 2020 WG (Q=4.012 AU, arc=23 days, H=21.7 ~155m) from PS2 (Dec. 9.34-38p4)
Observations of close-passing objects
K20X02G 2020 XG2 (arc=1 day, H=27.9 ~9m) from IAS Obs. Hakos (Dec. 8.99p2)
K20X02B 2020 XB2 (arc=2 days, H=26.0 ~21m) from Tebbutt Obs. (Dec. 9.19-21p3)
K20X01Q 2020 XQ1 (arc=3 days, H=25.7 ~25m) from Tebbutt Obs. (Dec. 8.18-20p3)
K20X01H 2020 XH1 (arc=4 days, H=22.8 ~93m) from Holmes/CTIO (Dec. 9.17p3), ATLAS Mauna Loa (Dec. 9.43-44p3), and Petit Jean Mtn. South Obs. (PJMSO) (Dec. 10.32-33p6)
K20X00O 2020 XO (arc=4 days, H=23.9 ~56m) from ATLAS Haleakala (Dec. 9.43-44p3)
K20X00N 2020 XN (arc=5 days, H=24.6 ~41m) from PJMSO (Dec. 10.28p5) and ATLAS Mauna Loa (Dec. 10.37-41p4)
K20X00H 2020 XH (arc=5 days, H=24.6 ~41m) from ATLAS Haleakala (Dec. 9.46-49p4)
K20X00B 2020 XB (Q=4.070 AU, arc=6 days, H=25.2 ~31m) from Holmes/CTIO (Dec. 5.21-22p2 & 7.25p3)
K20W04Z 2020 WZ4 (arc=20 days, H=24.4 ~45m) from Holmes/CTIO (Dec. 5.16p2)
K20V05D 2020 VD5 (arc=5 days, H=26.7 ~15m) from ARO Westfield (Nov. 19.21-22p2 at V=22.4-5)
K20O05K 2020 OK5 (arc=149 days, H=25.4 ~28m, NHATS target) from PS2 (Dec. 9.48-52p4), ATLAS Haleakala (Dec. 9.52-55p5), and PS1 (Dec. 9.53-57p4)
K12UH1K 2012 UK171 (arc=3 opp, H=24.4 ~45m, NHATS target) from LCO Siding Spring B (Dec. 8.73-74p3) and Spacewatch 0.9m (Dec. 9.47-48p3)
o1647 501647 2014 SD224 from ATLAS Haleakala (Dec. 9.45-47p3)
Observation campaigns (NHATS targets, radar support)
K20W03K 2020 WK3 (arc=17 days, H=25.0 ~34m, NHATS) from Holmes/CTIO (Dec. 9.26-27p4)
K20V05X 2020 VX5 (arc=26 days, H=23.4 ~71m, NHATS) from PS1 (Dec. 9.32-36p3)
K20T08J 2020 TJ8 (arc=56 days, H=25.0 ~34m, NHATS) from PS1 (Dec. 9.50-52p3)
K20T03M 2020 TM3 (arc=29 days, H=25.2 ~31m, NHATS) from ARO Westfield (Nov. 7.05-06p2 at V=22.0-22.3)
K20R02W 2020 RW2 (arc=103 days, H=22.8 ~93m, NHATS) from Holmes/CTIO (Dec. 9.33p3)
K16P01D 2016 PD1 (arc=2 opp, H=23.8 ~59m, NHATS) from Spacewatch 1.8m (2016 Dec. 4.26-29p2)
K11UB4Y 2011 UY114 (arc=2 opp, H=23.7 ~62m, NHATS) from ARO Westfield (Nov. 4.15-17p2 at V=22.1)
K11G60D 2011 GD60 (arc=4 opp, H=21.8 ~148m, NHATS) from ATLAS Mauna Loa (Dec. 9.43-46p4)
K10W08T 2010 WT8 (arc=4 opp, H=21.9 ~141m, NHATS) from PS2 (Dec. 9.44-47p4) and Spacewatch 0.9m (Dec. 9.46-47p2)
K06R01J 2006 RJ1 (arc=4 opp, H=22.2 ~123m, NHATS) from ATLAS Mauna Loa (Dec. 9.35-37p4)
04179 4179 Toutatis (1989 AC) (radar) from ATLAS Mauna Loa (Dec. 9.23-25p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20X02Q 2020 XQ2 (i=42.0°, arc=1 day, H=22.8 ~93m) from Farra d'Isonzo Obs. (Dec. 9.91p4)
K20X02N 2020 XN2 (arc=2 days, H=23.4 ~71m) from Farra d'Isonzo Obs. (Dec. 9.89-90p3) and ATLAS Mauna Loa (Dec. 10.38-41p4)
K20X01R 2020 XR1 (i=36.2°, arc=2 days, H=23.7 ~62m) from Tebbutt Obs. (Dec. 8.16-18p3)
K20X00V 2020 XV (arc=4 days, H=23.8 ~59m) from Holmes/CTIO (Dec. 9.19p2)
K20X00U 2020 XU (arc=4 days, H=23.0 ~85m) from ATLAS Haleakala (Dec. 9.46-47p5)
K20W05T 2020 WT5 (arc=5 days, H=22.3 ~117m) from Holmes/CTIO (Dec. 5.04-05p3)
K20W04E 2020 WE4 (arc=16 days, H=23.5 ~68m) from Holmes/CTIO (Dec. 9.26-27p3) and Mt. John Obs. (Dec. 9.54p5)
K20W03O 2020 WO3 (arc=27 days, H=23.1 ~81m) from Holmes/CTIO (Dec. 5.13-14p4)
K20W03C 2020 WC3 (arc=18 days, H=22.4 ~112m) from Bok Tel. (Dec. 9.25-26p4)
K20W01N 2020 WN1 (arc=4 days, H=26.3 ~19m) from ARO Westfield (Nov. 18.26-27p3)
K20W00Q 2020 WQ (arc=50 days, H=24.2 ~49m) from Holmes/CTIO (Dec. 5.20-21p3 & 9.30-31p3)
K20W00K 2020 WK (arc=28 days, H=25.6 ~26m) from Spacewatch 1.8m (Dec. 9.53-54p2)
K20V07C 2020 VC7 (arc=35 days, H=23.8 ~59m) from PJMSO (Dec. 10.27p6)
K20V06L 2020 VL6 (arc=12 days, H=24.4 ~45m) from ARO Westfield (Nov. 19.30-31p3 at V=22.0-22.2)
K20V05K 2020 VK5 (arc=21 days, H=24.0 ~54m) from Holmes/CTIO (Dec. 5.24-26p3 at G=22.2-6)
K20V03R 2020 VR3 (arc=28 days, H=24.6 ~41m) from Holmes/CTIO (Dec. 9.25-27p3 at G=22.2-5)
K20V03G 2020 VG3 (arc=26 days, H=23.9 ~56m) from Holmes/CTIO (Dec. 5.27-29p3 at G=22.1-2 & 7.25-27p3 at G=22.1-3)
K20V02B 2020 VB2 (arc=27 days, H=23.0 ~85m) from Holmes/CTIO (Dec. 7.22-24p3 at G=22.0-22.1)
K20V01X 2020 VX1 (arc=27 days, H=22.9 ~89m) from Holmes/CTIO (Dec. 5.14-15p3)
K20V00T 2020 VT (arc=35 days, H=25.2 ~31m) from Holmes/CTIO (Dec. 9.23-24p3)
K20V00B 2020 VB (arc=32 days, H=23.1 ~81m) from Holmes/CTIO (Dec. 5.08-10p3 at G=22.4-6)
K20U05V 2020 UV5 (arc=55 days, H=22.2 ~123m) from PS1 (Dec. 9.33-36p3 at w=22.5-6)
K20U02J 2020 UJ2 (Q=4.034 AU, arc=53 days, H=23.7 ~62m) from Holmes/CTIO (Dec. 9.32-33p3 at G=22.4-6)
K20U00H 2020 UH (arc=27 days, H=24.5 ~43m) from ARO Westfield (Nov. 8.17-18p2 at V=22.2-5)
K20R11Q 2020 RQ11 (arc=87 days, H=22.2 ~123m) from PS1 (Dec. 9.28-30p3)
K20R04S 2020 RS4 (arc=90 days, H=23.7 ~62m) from Holmes/CTIO (Dec. 9.29-30p3)
K20R03S 2020 RS3 (q=0.342 AU, arc=34 days, H=22.9 ~89m) from ARO Westfield (Oct. 14.04-05p3 at V=22.1-3)
K20N00V 2020 NV (arc=146 days, H=22.7 ~98m) from Holmes/CTIO (Nov. 19.19-23p3 at G=23.0-1 & Dec. 5.12-15p3 at G=23.0-1)
K20S01T 2020 ST1 (arc=102 days, H=22.0 ~135m) from Holmes/CTIO (Dec. 7.21p3)
K20N00G 2020 NG (arc=30 days, H=21.8 ~148m) from ARO Westfield (Aug. 7.09p2 at V=22.5-6)
K16Y00M 2016 YM (arc=3 opp, H=22.0 ~135m) from ATLAS Haleakala (Dec. 9.41-42p3) and PJMSO (Dec. 10.36p5)
Observations of other objects
K20X02M 2020 XM2 (Q=4.144 AU, arc=3 days, H=19.7 ~389m) from Sandlot Obs. (Dec. 9.46-49p3)
K20W05S 2020 WS5 (i=40.9°, Q=4.024 AU, arc=12 days, H=21.0 ~214m) from Holmes/CTIO (Dec. 7.18-19p3) and Mt. John Obs. (Dec. 9.52-53p3)
K20W05M 2020 WM5 (Q=4.893 AU, arc=11 days, H=21.0 ~214m) from ATLAS Haleakala (Dec. 9.56-57p4)
K20W05A 2020 WA5 (arc=14 days, H=21.5 ~170m) from ATLAS Haleakala (Dec. 9.42-44p4)
K20W01Z 2020 WZ1 (i=45.2°, arc=20 days, H=20.4 ~282m) from Holmes/CTIO (Dec. 7.22-23p3)
K20W01L 2020 WL1 (arc=23 days, H=19.9 ~355m) from Holmes/CTIO (Dec. 9.34-35p2)
K20V05Z 2020 VZ5 (arc=25 days, H=21.1 ~204m) from Holmes/CTIO (Dec. 9.30-31p3)
K20V03M 2020 VM3 (arc=29 days, H=20.8 ~234m) from PS1 (Dec. 9.48-52p3)
K20U07G 2020 UG7 (arc=2 opp, H=19.4 ~446m) from Bok Tel. (Dec. 9.27-28p4)
K20U01L 2020 UL1 (arc=58 days, H=20.1 ~323m) from Holmes/CTIO (Dec. 5.11-12p3)
K20T08V 2020 TV8 (arc=28 days, H=20.7 ~245m) from ARO Westfield (Nov. 8.24-26p3 at V=22.3-6)
K20T05P 2020 TP5 (i=43.2°, arc=80 days, H=20.9 ~224m) from Holmes/CTIO (Dec. 7.06-09p3 at G=22.8-9)
K20T05H 2020 TH5 (arc=58 days, H=21.0 ~214m) from PS2 (Dec. 10.21-24p3)
K20T04G 2020 TG4 (Q=4.171 AU, arc=82 days, H=20.1 ~323m) from PJMSO (Dec. 10.36-37p5)
K20R05Z 2020 RZ5 (arc=114 days, H=20.7 ~245m) from Holmes/CTIO (Dec. 9.28-29p3)
K20R00U 2020 RU (Q=4.833 AU, arc=101 days, H=19.2 ~490m) from the Zwicky Transient Facility (ZTF) (Dec. 7.20p1 & 7.36p1) and PS1 (Dec. 9.49-53p4)
K20Q06U 2020 QU6 (arc=104 days, H=18.2 ~776m) from PS2 (Dec. 9.26-29p4)
K20Q06Q 2020 QQ6 (Q=4.107 AU, arc=116 days, H=19.8 ~371m) from Holmes/CTIO (Dec. 5.08-09p3)
K20Q05P 2020 QP5 (i=40.3°, Q=4.071 AU, arc=50 days, H=18.3 ~741m) from ARO Westfield (Sept. 25.17-19p3 at V=22.2-3)
K20Q00S 2020 QS (Q=4.130 AU, arc=121 days, H=21.6 ~162m) from PS1 (Dec. 9.43-47p3)
K20P05C 2020 PC5 (Q=4.177 AU, arc=116 days, H=18.5 ~676m) from Holmes/CTIO (Dec. 5.10-11p3)
K20P01D 2020 PD1 (Q=4.135 AU, arc=168 days, H=19.3 ~467m) from ZTF (Dec. 7.18-19p2 & 7.28-32p2)
K20O08C 2020 OC8 (arc=177 days, H=20.8 ~234m) from ATLAS Mauna Loa (Dec. 9.38-40p4)
K20N00E 2020 NE (i=42.0°, arc=167 days, H=21.6 ~162m) from Holmes/CTIO (Dec. 7.33-34p3 at G=23.1-2)
K20M03Z 2020 MZ3 (Q=4.359 AU, arc=193 days, H=20.0 ~339m) from Spacewatch 0.9m (Dec. 9.50-52p3)
K20J03Q 2020 JQ3 from ARO Westfield (July 24.35-36p3 at V=22.2-3)
K20D03T 2020 DT3 (arc=178 days, H=21.2 ~195m) from ARO Westfield (July 26.37-38p3 at V=22.1-2)
K19O01R 2019 OR1 (arc=2 opp, H=21.0 ~214m) from ARO Westfield (July 17.36-37p3 at V=22.2-4)
K18P23L 2018 PL23 (q=0.333 AU, arc=9 opp, H=19.9 ~355m) from ARO Westfield (Aug. 7.22-23p2 at V=22.1-3)
K18G05V 2018 GV5 (arc=2 opp, H=20.0 ~339m) from PS2 (Dec. 9.30-33p4)
K17V12T 2017 VT12 (arc=4 opp, H=20.4 ~282m) from ATLAS Haleakala (Dec. 9.22-25p4)
K17S20V 2017 SV20 (arc=5 opp, H=18.6 ~645m) from PS1 (Dec. 9.38-41p4)
K17S19E 2017 SE19 (arc=3 opp, H=19.8 ~371m) from ATLAS Mauna Loa (Dec. 9.34-36p4)
K17R01T 2017 RT1 (arc=2 opp, H=21.1 ~204m) from ARO Westfield (Nov. 8.05-06p3 at V=22.4-5)
K17G06O 2017 GO6 (Q=4.121 AU, arc=2 opp, H=19.3 ~467m) from PS1 (Dec. 9.26-30p3)
K16X00M 2016 XM (arc=168 days, H=20.0 ~339m) from Spacewatch 1.8m (2016 Dec. 20.23-24p2)
K16O05P 2016 OP5 (arc=4 opp, H=20.9 ~224m) from ATLAS Mauna Loa (Dec. 9.33-35p4)
K16J33U 2016 JU33 (arc=3 opp, H=20.8 ~234m) from Spacewatch 0.9m (Dec. 9.37-39p3)
K16E84L 2016 EL84 (arc=4 opp, H=19.8 ~371m) from PS1 (Dec. 9.59-63p4) and PS2 (Dec. 9.59-63p4)
K15XQ1W 2015 XW261 (arc=4 opp, H=21.4 ~178m) from ARO Westfield (Aug. 13.13-15p3 at V=22.1-5)
K15B04F 2015 BF4 (arc=6 opp, H=20.5 ~269m) from ATLAS Mauna Loa (Dec. 9.40-42p4)
K14Wa5P 2014 WP365 (arc=3 opp, H=20.3 ~295m) from ARO Westfield (Aug. 8.14-15p2 at V=22.2)
K14Wa5G 2014 WG365 (arc=5 opp, H=20.0 ~339m) from ATLAS Haleakala (Dec. 9.40-42p4)
K14QT6K 2014 QK296 (arc=5 opp, H=18.4 ~708m) from PS1 (Dec. 9.48-52p4)
K14L26R 2014 LR26 (Q=5.114 AU, arc=2 opp, H=18.6 ~645m) from Spacewatch 1.8m (Dec. 9.50-52p3 at R=22.1-23.1)
K14C14J 2014 CJ14 (arc=3 opp, H=21.0 ~214m) from PS1 (Dec. 9.43-47p3)
K13U14X 2013 UX14 (arc=4 opp, H=18.3 ~741m) from ATLAS Haleakala (Dec. 9.43-47p4) and PJMSO (Dec. 10.33-34p3)
K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from ATLAS Mauna Loa (Dec. 9.40-42p4)
K13G79Z 2013 GZ79 (arc=4 opp, H=19.9 ~355m) from Spacewatch 1.8m (2016 Dec. 5.34p1 & 2016 Dec. 5.39p1)
K12S22A 2012 SA22 (arc=3 opp, H=18.1 ~812m) from ATLAS Haleakala (Dec. 9.40-43p6) and PJMSO (Dec. 10.34-35p6)
K11Y62U 2011 YU62 (Q=4.766 AU, arc=4 opp, H=17.6 ~1.02 km) from ARO Westfield (Nov. 7.25-28p3 at V=22.2)
K11W02L 2011 WL2 (arc=6 opp, H=20.8 ~234m) from Spacewatch 0.9m (Dec. 9.44-45p6)
K11S03F 2011 SF3 (Q=4.342 AU, arc=2 opp, H=20.8 ~234m) from PS1 (Dec. 9.44-48p4)
K08C01H 2008 CH1 (arc=4 opp, H=21.6 ~162m) from Spacewatch 1.8m (2016 Dec. 4.33-36p2)
K07T18Z 2007 TZ18 (arc=2 opp, H=20.8 ~234m) from PS2 (Dec. 10.21-24p4)
K06B00C 2006 BC (q=0.243 AU, arc=4 opp, H=19.1 ~513m) from ARO Westfield (Nov. 16.39-40p3 at V=21.6-22.5)
K05YC8L 2005 YL128 (arc=4 opp, H=20.8 ~234m) from Spacewatch 1.8m (2016 Dec. 9.20-21p2)
K04L03U 2004 LU3 (arc=5 opp, H=18.4 ~708m) from ATLAS Mauna Loa (Dec. 9.38-41p4)
K03Y00J 2003 YJ (arc=4 opp, H=20.3 ~295m) from ATLAS Mauna Loa (Dec. 9.41-44p4)
K03O03A 2003 OA3 (arc=5 opp, H=19.5 ~426m) from PS1 (Dec. 10.21-23p3)
K03B47K 2003 BK47 (Q=4.689 AU, arc=5 opp, H=17.8 ~933m) from ATLAS Mauna Loa (Dec. 9.56-59p4)
K02V85P 2002 VP85 (i=37.4°, arc=3 opp, H=20.0 ~339m) from PS2 (Dec. 10.22-25p4)
K02T67S 2002 TS67 (arc=6 opp, H=19.1 ~513m) from ATLAS Haleakala (Dec. 9.48-49p3)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.7 ~616m) from ATLAS Haleakala (Dec. 9.53-55p4) and Simeis Obs./code 8 (Dec. 10.05-06p4)
K02AC9R 2002 AR129 (Q=4.486 AU, arc=5 opp, H=17.7 ~977m) from PS2 (Dec. 9.35-38p3)
K00P27Q 2000 PQ27 (arc=3 opp, H=20.0 ~339m) from PS1 (Dec. 9.32-36p4)
J96B01A 1996 BA1 (arc=3 opp, H=20.3 ~295m) from PS1 (Dec. 9.33-36p4)
o4711 504711 2009 SP171 from ARO Westfield (Aug. 8.29-30p3 at V=22.3-6)
n7094 497094 2004 AH from ATLAS Mauna Loa (Dec. 9.51-53p4)
n1567 491567 2012 RG3 from PS1 (Dec. 10.21-23p3)
m0824 480824 1999 JO6 from ATLAS Mauna Loa (Dec. 9.37-38p4)
l4554 474554 2003 YQ94 from ATLAS Mauna Loa (Dec. 9.28-30p4)
k5749 465749 2009 WO6 from ATLAS Haleakala (Dec. 9.52-53p4)
j2307 452307 Manawydan (1997 XV11) from ATLAS Mauna Loa (Dec. 9.41-44p4)
j0648 450648 2006 UC63 from ARO Westfield (July 11.28-30p3 at V=22.1-2)
h8902 438902 2009 WF104 from PS2 (Dec. 9.46-48p3)
g8086 428086 2006 NM from ATLAS Haleakala (Dec. 9.35-42p4)
f7217 417217 2005 YS from ATLAS Haleakala (Dec. 9.29-33p4 & 9.39-43p4)
f5029 415029 2011 UL21 from ATLAS Haleakala (Dec. 9.44-47p4)
f4586 414586 2009 UV18 from ATLAS Mauna Loa (Dec. 9.36-38p4)
b8160 378160 2006 WX1 from ATLAS Haleakala (Dec. 9.31-32p4)
b6848 376848 2001 RY47 from PS1 (Dec. 9.26-29p4)
V6695 316695 1996 TE9 from PS1 (Dec. 9.26-28p3)
U2156 302156 2001 SF286 from PS1 (Dec. 9.43-45p3)
R6786 276786 2004 KD1 from PS2 (Dec. 9.40-43p4)
P5071 255071 2005 UH6 from PS2 (Dec. 9.21-23p3)
O1662 241662 2000 KO44 from ATLAS Mauna Loa (Dec. 9.49-54p4)
L6707 216707 2004 XP164 from ATLAS Mauna Loa (Dec. 9.58-60p4)
J4126 194126 2001 SG276 from PS1 (Dec. 9.32-36p4)
I9040 189040 2000 MU1 from Spacewatch 0.9m (Dec. 9.49-50p3)
H3664 173664 2001 JU2 from Bok Tel. (Dec. 9.50-52p4)
G3902 163902 2003 SW222 from ATLAS Haleakala (Dec. 9.38p3)
G3692 163692 2003 CY18 from PS2 (Dec. 10.21-24p4)
G3364 163364 2002 OD20 from Bok Tel. (Dec. 9.27-28p4)
G3014 163014 2001 UA5 from PS2 (Dec. 9.21-25p4) and ATLAS Mauna Loa (Dec. 9.27-29p4)
G2900 162900 2001 HG31 from PS2 (Dec. 9.21-24p4)
G2142 162142 1998 VR from PS2 (Dec. 9.21-25p3)
G2039 162039 1996 JG from PS2 (Dec. 9.44-47p6) and ATLAS Haleakala (Dec. 9.46-49p4)
F9402 159402 1999 AP10 from ATLAS Haleakala (Dec. 9.55-57p4)
F3201 153201 2000 WO107 from LCO McDonald Obs. B (Dec. 4.15-18p5), IAS Obs. Hakos (Dec. 4.94-96p15), program code 1 via Kuban State Univ. Obs. (Dec. 7.66-70p3 & 7.76-79p2), Althuraya Astronomy Ctr. (Dec. 8.62-72p7), Foxfire Village Obs. (Dec. 9.07p1), and PJMSO (Dec. 10.31-32p5)
E0333 140333 2001 TD2 from PS2 (Dec. 9.26-29p4)
E0288 140288 2001 SN289 from PS1 (Dec. 9.21-25p7)
D8893 138893 2000 YH66 from PS2 (Dec. 9.39-43p4)
D8175 138175 2000 EE104 from ATLAS Haleakala (Dec. 9.52-53p4)
D7805 137805 1999 YK5 from ATLAS Mauna Loa (Dec. 9.21-23p4)
B5052 115052 2003 RD6 from PS2 (Dec. 9.21-23p3)
99935 99935 2002 AV4 from PS2 (Dec. 9.54-58p4)
99907 99907 1989 VA from ATLAS Mauna Loa (Dec. 9.29-31p4)
96315 96315 1997 AP10 from PS2 (Dec. 9.44-48p4)
90075 90075 2002 VU94 from ATLAS Mauna Loa (Dec. 9.26-28p4)
89355 89355 2001 VS78 from ZTF (Dec. 9.36-46p4)
88188 88188 2000 XH44 from ZTF (Dec. 7.20p1, 7.39p1, 9.34-35p2 & 9.44p1)
86039 86039 1999 NC43 from ATLAS Mauna Loa (Dec. 9.20-22p4)
68359 68359 2001 OZ13 from ZTF (Dec. 7.18-22p3)
66272 66272 1999 JW6 from ATLAS Haleakala (Dec. 9.31-32p4)
53435 53435 1999 VM40 from ATLAS Haleakala (Dec. 9.53-55p4)
30825 30825 1990 TG1 from PS2 (Dec. 9.21-24p4) and ATLAS Mauna Loa (Dec. 9.24-26p4)
27002 27002 1998 DV9 from PS2 (Dec. 10.22-25p4)
21374 21374 1997 WS22 from ZTF (Dec. 7.36p1 & 7.46p1), PS1 (Dec. 9.50-52p3), and ATLAS Haleakala (Dec. 9.50-51p3)
20460 20460 Robwhiteley (1999 LO28) from ZTF (Dec. 5.14p1)
19764 19764 2000 NF5 from program code 1 via Kitab Obs. (Oct. 10.85-88p4) and ATLAS Mauna Loa (Dec. 9.31-33p4)
16834 16834 1997 WU22 from Spacewatch 0.9m (Dec. 9.37-39p3)
10150 10150 1994 PN from ATLAS Mauna Loa (Dec. 9.53-57p4)
10115 10115 1992 SK from PS1 (Dec. 9.32-35p4)
08567 8567 1996 HW1 from ATLAS Mauna Loa (Dec. 9.51-55p4)
08037 8037 1993 HO1 from SATINO-1 (Aug. 20.09-10p2)
07753 7753 1988 XB from ATLAS Haleakala (Dec. 9.46-49p4)
05863 5863 Tara (1983 RB) from PS1 (Dec. 9.43-46p4)
05587 5587 1990 SB from ZTF (Dec. 5.27p1, 5.32p1, 5.41p1 & 7.17-19p2) and ATLAS Mauna Loa (Dec. 9.40-42p4)
04688 4688 1980 WF from ARO Westfield (Aug. 15.39-40p3 at V=22.2-3)
04503 4503 Cleobulus (1989 WM) from ATLAS Mauna Loa (Dec. 9.33-35p4)
03908 3908 Nyx (1980 PA) from ATLAS Mauna Loa (Dec. 9.27-29p4)
03691 3691 Bede (1982 FT) from ATLAS Mauna Loa (Dec. 9.26-28p4)
02368 2368 Beltrovata (1977 RA) from ATLAS Haleakala (Dec. 9.43-45p4)
01981 1981 Midas (1973 EA) from ATLAS Mauna Loa (Dec. 9.23-26p7)
01943 1943 Anteros (1973 EC) from ATLAS Mauna Loa (Dec. 9.63-66p8)
01685 1685 Toro (1948 OA) from ATLAS Mauna Loa (Dec. 9.63-66p4)
01036 1036 Ganymed (1924 TD) from ATLAS Mauna Loa (Dec. 9.54-57p4)
00887 887 Alinda (1918 DB) from ATLAS Mauna Loa (Dec. 9.29-31p4)
00433 433 Eros (1898 DQ) from ATLAS Mauna Loa (Dec. 9.63-66p4)

MPEC 2020-X91 - "00:33 UT" - 2015 XY169

K15XG9Y 2015 XY169 (Earth MOID=7.7 LD, H=25.5 ~27m, NHATS target) from MLS (Nov. 27.28-29p2), the Catalina Sky Survey (CSS) (Dec. 4.37p2), ATLAS Haleakala (Dec. 8.49-55p4), ATLAS Mauna Loa (Dec. 8.59-60p5), Xingming Obs. #3 (Dec. 8.84-85p3), ARO Westfield (Dec. 9.26-27p6), Sandlot Obs. (Dec. 9.28-29p3), Steward Mt. Lemmon Sta. (Dec. 9.35p4), Moriyama Obs. (Dec. 9.57p2), Farra d'Isonzo Obs. (Dec. 9.88p3), and Visnjan Obs. (Dec. 9.89-91p5)

Observers on 10 December '20

A total of 35 observers appear in today's MPECs.

Code	Observer / observatory
`M46`	Althuraya Astronomy Ctr., 1 in MPEC 2020-X92 -- 153201
`H21`	Astronomical Research Obs. Westfield in Illinois, 28 in MPECs 2020-X91, 2020-X92, 2020-X93, 2020-X95 & 2020-X102 -- 2020 XW2, 2020 XS2, 2020 XR2, 2020 WZ3, 2020 WN1, 2020 VL6, 2020 VD5, 2020 UH, 2020 TV8, 2020 TM3, 2020 SA2, 2020 RS3, 2020 QP5, 2020 NG, 2020 JQ3, 2020 DT3, 2019 OR1, 2018 PL23, 2017 RT1, 2015 XY169, 2015 XW261, 2014 WP365, 2011 YU62, 2011 UY114, 2006 BC, 504711, 450648, 4688
`T05`	ATLAS Haleakala in Hawaii, 29 in MPECs 2020-X91 & 2020-X92 -- 2020 XU, 2020 XO, 2020 XH, 2020 WM5, 2020 WA5, 2020 OK5, 2017 VT12, 2016 YM, 2015 XY169, 2014 WG365, 2013 UX14, 2012 SA22, 2002 TS67, 2002 GZ8, 66272, 53435, 501647, 465749, 428086, 417217, 415029, 378160, 21374, 163902, 162039, 159402, 138175, 7753, 2368
`T08`	ATLAS Mauna Loa in Hawaii, 42 in MPECs 2020-X91, 2020-X92 & 2020-X104 -- 2020 XN2, 2020 XN, 2020 XH1, 2020 OC8, 2017 SE19, 2016 OP5, 2015 XY169, 2015 BF4, 2013 PY6, 2011 GD60, 2006 WG129, 2006 RJ1, 2004 LU3, 2003 YJ, 2003 BK47, 99907, 90075, 86039, 497094, 480824, 474554, 452307, 414586, 30825, 241662, 216707, 19764, 163014, 137805, 10150, 8567, 5587, 4503, 4179, 3908, 3691, 1981, 1943, 1685, 1036, 887, 433
`V00`	Bok Telescope in Arizona, 6 in MPECs 2020-X92, 2020-X93 & 2020-X94 -- 2020 XR2, 2020 WC3, 2020 UG7, 2016 LD9, 173664, 163364
`703`	Catalina Sky Survey in Arizona, 1 in MPEC 2020-X91 -- 2015 XY169
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 3 in MPECs 2020-X93, 2020-X94 & 2020-X102 -- 2020 XW2, 2020 XR2, 2016 LD9
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 34 in MPECs 2020-X92, 2020-X96 & 2020-X98 -- 2020 XV, 2020 XT2, 2020 XH1, 2020 XB, 2020 WZ4, 2020 WZ1, 2020 WT5, 2020 WS5, 2020 WQ1, 2020 WQ, 2020 WO3, 2020 WL1, 2020 WK3, 2020 WE4, 2020 WA6, 2020 VZ5, 2020 VX1, 2020 VT, 2020 VR3, 2020 VK5, 2020 VG3, 2020 VB2, 2020 VB, 2020 UL1, 2020 UJ2, 2020 TP5, 2020 ST1, 2020 RZ5, 2020 RW2, 2020 RS4, 2020 QQ6, 2020 PC5, 2020 NV, 2020 NE
`734`	Farpoint Obs. in Kansas, 1 in MPEC 2020-X95 -- 2020 XS2
`595`	Farra d'Isonzo Obs. in Italy, 3 in MPECs 2020-X91 & 2020-X92 -- 2020 XQ2, 2020 XN2, 2015 XY169
`W46`	Foxfire Village Obs., 1 in MPEC 2020-X92 -- 153201
`221`	IAS Obs. Hakos in Namibia, 2 in MPEC 2020-X92 -- 2020 XG2, 153201
`1861`	program code 1 via Kitab Obs., 1 in MPEC 2020-X92 -- 19764
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-X92 -- 153201
`V39`	LCO McDonald Obs. B in Texas, 1 in MPEC 2020-X92 -- 153201
`Q64`	LCO Siding Spring B in New South Wales, 1 in MPEC 2020-X92 -- 2012 UK171
`900`	Moriyama Obs. in Japan, 1 in MPEC 2020-X91 -- 2015 XY169
`474`	Mt. John Obs. in New Zealand, 5 in MPECs 2020-X92, 2020-X96, 2020-X100 & 2020-X101 -- 2020 XV2, 2020 XT2, 2020 WS5, 2020 WE4, 2003 YR1
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2020-X91, 2020-X93, 2020-X94, 2020-X95, 2020-X96, 2020-X98, 2020-X100 & 2020-X101 -- 2020 XV2, 2020 XT2, 2020 XS2, 2020 XR2, 2020 WA6, 2016 LD9, 2015 XY169, 2003 YR1
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 32 in MPECs 2020-X92, 2020-X95, 2020-X98, 2020-X99, 2020-X102, 2020-X103 & 2020-X104 -- 2020 XW2, 2020 XS2, 2020 WA6, 2020 VX5, 2020 VM3, 2020 UV5, 2020 TJ8, 2020 RU, 2020 RQ11, 2020 QS, 2020 OK5, 2018 XE4, 2017 SV20, 2017 GO6, 2016 EL84, 2014 QK296, 2014 CJ14, 2011 SF3, 2010 KQ10, 2006 WG129, 2003 OA3, 2000 PQ27, 1996 BA1, 491567, 376848, 316695, 302156, 21374, 194126, 140288, 10115, 5863
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 30 in MPECs 2020-X92, 2020-X96, 2020-X98, 2020-X99, 2020-X103 & 2020-X104 -- 2020 XT2, 2020 WG, 2020 WA6, 2020 TH5, 2020 QU6, 2020 OK5, 2018 XE4, 2018 GV5, 2016 EL84, 2010 WT8, 2010 KQ10, 2007 TZ18, 2006 WG129, 2002 VP85, 2002 AR129, 99935, 96315, 438902, 30825, 276786, 27002, 255071, 163692, 163014, 162900, 162142, 162039, 140333, 138893, 115052
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 8 in MPEC 2020-X92 -- 2020 XN, 2020 XH1, 2020 VC7, 2020 TG4, 2016 YM, 2013 UX14, 2012 SA22, 153201
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-X102 -- 2020 XW2
`H36`	Sandlot Obs. in Kansas, 2 in MPECs 2020-X91 & 2020-X92 -- 2020 XM2, 2015 XY169
`C95`	SATINO-1 in France, 1 in MPEC 2020-X92 -- 8037
`0331`	program code 1 via Schwarzschild Obs. in Germany, 1 in MPEC 2020-X94 -- 2016 LD9
`0948`	program code 8 via Simeis Obs. in Ukraine, 2 in MPEC 2020-X92 -- 2002 GZ8, 99942
`691`	Spacewatch 0.9m telescope in Arizona, 8 in MPECs 2020-X92 & 2020-X101 -- 2020 XV2, 2020 MZ3, 2016 JU33, 2012 UK171, 2011 WL2, 2010 WT8, 189040, 16834
`291`	Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2020-X92, 2020-X93, 2020-X94 & 2020-X102 -- 2020 XW2, 2020 XR2, 2020 XG, 2020 WK, 2016 XM, 2016 PD1, 2016 LD9, 2014 LR26, 2013 GZ79, 2008 CH1, 2005 YL128
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 8 in MPECs 2020-X91, 2020-X93, 2020-X94, 2020-X95, 2020-X96, 2020-X98, 2020-X100 & 2020-X101 -- 2020 XV2, 2020 XT2, 2020 XS2, 2020 XR2, 2020 WA6, 2016 LD9, 2015 XY169, 2003 YR1
`858`	Tebbutt Obs. in New Mexico, 5 in MPECs 2020-X92, 2020-X94 & 2020-X95 -- 2020 XS2, 2020 XR1, 2020 XQ1, 2020 XB2, 2016 LD9
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 5 in MPECs 2020-X92 & 2020-X97 -- 2020 XZ, 2020 XG, 2020 XE, 2020 WU5, 2019 CT1
`L01`	Visnjan Obs. in Croatia, 2 in MPECs 2020-X91 & 2020-X101 -- 2020 XV2, 2015 XY169
`N88`	Xingming Obs. #3, 1 in MPEC 2020-X91 -- 2015 XY169
`I41`	Zwicky Transient Facility (ZTF) in southern California, 8 in MPEC 2020-X92 -- 2020 RU, 2020 PD1, 89355, 88188, 68359, 21374, 20460, 5587

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

Impact Risk Monitoring on 10 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 XZ	NEODyS	2020	R E M O V E D						-
2020 XZ	JPL Sentry	1740	2058-2094	2	7.2549e-07	-6.62	-6.63	0	JPL: Computed at 06:19 today Pacific time based on 11 observations spanning 4.1962 days (2020-Dec-05.454555 to 2020-Dec-09.650727). Diameter approximately 0.021 km. from weighted mean H=26.01.

2020 XR	JPL Sentry	0500	2028-2103	5	8.87542553e-05	-0.70	-0.70	1	JPL: Computed at 09:58 Dec. 9th Pacific time based on 49 observations spanning 4.9786 days (2020-Dec-04.212236 to 2020-Dec-09.190799). Diameter approximately 0.390 km. from weighted mean H=19.69.

2020 XG	NEODyS	2020	2081-2120	139	8.29e-05	-5.86	-6.6	n/a	NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2020-12-04.338 to 2020-12-09.494."
2020 XG	JPL Sentry	1740	2081-2120	66	0.0001089061522	-5.72	-6.19	0	JPL: Computed at 06:40 today Pacific time based on 29 observations spanning 5.1566 days (2020-Dec-04.336897 to 2020-Dec-09.493449). Diameter approximately 0.008 km. from weighted mean H=28.10.

2020 XF	NEODyS	1740	2056-2120	563	9.59e-04	-4.03	-4.19	n/a	NEODyS: "Based on 61 optical observations (of which 0 are rejected as outliers) from 2020-12-04.328 to 2020-12-09.125."

2020 XE	NEODyS	2020	2040-2075	3	1.07e-05	-4.83	-4.83	0	NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2020-12-04.398 to 2020-12-09.504."
2020 XE	JPL Sentry	1740	2040-2040	2	6.59272e-06	-5.04	-5.04	0	JPL: Computed at 06:01 today Pacific time based on 48 observations spanning 5.1060 days (2020-Dec-04.397182 to 2020-Dec-09.50321). Diameter approximately 0.019 km. from weighted mean H=26.25.

2020 WU5	NEODyS	2020	R E M O V E D						-
2020 WU5	JPL Sentry	1740	R E M O V E D						JPL: Risk listing removed at 1429 UTC today

2020 WZ3	NEODyS	2020	2089-2119	15	9.99e-06	-5.98	-6.37	0	NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2020-11-23.353 to 2020-12-08.248."
2020 WZ3	JPL Sentry	1740	2088-2119	14	1.417365e-05	-5.82	-6.32	0	JPL: Computed at 06:08 today Pacific time based on 46 observations spanning 14.895 days (2020-Nov-23.352624 to 2020-Dec-08.2476). Diameter approximately 0.020 km. from weighted mean H=26.20.

2020 VK6	JPL Sentry	0500	2090-2111	4	9.00696e-06	-5.59	-5.84	0	JPL: Computed at 06:00 Nov. 26th Pacific time based on 97 observations spanning 13.920 days (2020-Nov-12.475059 to 2020-Nov-26.39488). Diameter approximately 0.026 km. from weighted mean H=25.56.

2020 SA2	NEODyS	2020	2117	1	2.33e-08	-9.30	-9.3	0	NEODyS: "Based on 31 optical observations (of which 2 are rejected as outliers) from 2020-09-19.364 to 2020-09-22.167."

2010 XC	JPL Sentry	0500	2021-2111	324	2.9148124e-06	-7.33	-8.24	0	JPL: Computed at 07:23 April 7th of 2017 Pacific time based on 8 observations spanning .05836 days (2010-Dec-01.30659 to 2010-Dec-01.36495). Diameter approximately 0.005 km. from weighted mean H=29.11.

2010 WW8	JPL Sentry	0500	2020-2112	82	1.354992e-07	-6.97	-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=26.40.

2010 VQ	JPL Sentry	0500	2034-2114	50	0.00013580505	-5.03	-5.24	0	JPL: Computed at 19:15 April 6th of 2017 Pacific time based on 30 observations spanning 9.8531 days (2010-Nov-01.34102 to 2010-Nov-11.194152). Diameter approximately 0.010 km. from weighted mean H=27.70.

2005 TM173	JPL Sentry	0500	2021-2116	146	9.395122e-07	-5.32	-6.23	0	JPL: Computed at 08:06 April 8th of 2017 Pacific time based on 6 observations spanning 1.9467 days (2005-Oct-09.20072 to 2005-Oct-11.14743). Diameter approximately 0.051 km. from weighted mean H=24.12.

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 10 December '20

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

2301	Grabbed MPEC 2020-X104 - 2006 WG129 - see above
2202	Grabbed MPEC 2020-X103 - 2018 XE4 - see above
2031	Grabbed MPEC 2020-X101 - 2020 XV2 - see above Grabbed MPEC 2020-X102 - 2020 XW2 - see above
2020	Noted that NEODyS has posted 2020 SA2 as an impact risk - see above Noted that NEODyS has removed 2020 WU5 as an impact risk - see above Noted that NEODyS has updated its 2020 WZ3 risk assessment - see above Noted that NEODyS has updated its 2020 XE risk assessment - see above Noted that NEODyS has updated its 2020 XG risk assessment - see above Noted that NEODyS has removed 2020 XZ as an impact risk - see above
2000	Grabbed MPEC 2020-X98 - 2020 WA6 - see above Grabbed MPEC 2020-X99 - 2010 KQ10 - see above Grabbed MPEC 2020-X100 - 2003 YR1 - see above
1740	Noted that JPL Sentry has removed 2020 WU5 as an impact risk - see above Noted that JPL Sentry has updated its 2020 WZ3 risk assessment - see above Noted that JPL Sentry has updated its 2020 XE risk assessment - see above Noted that NEODyS has updated its 2020 XF risk assessment - see above Noted that JPL Sentry has updated its 2020 XG risk assessment - see above Noted that JPL Sentry has updated its 2020 XZ risk assessment - see above Grabbed MPEC 2020-X92 - Daily Orbit Update - see above Grabbed MPEC 2020-X93 - 2020 XR2 - see above Grabbed MPEC 2020-X94 - 2016 LD9 - see above Grabbed MPEC 2020-X95 - 2020 XS2 - see above Grabbed MPEC 2020-X96 - 2020 XT2 - see above Grabbed MPEC 2020-X97 - 2019 CT1 - see above
0500	Noted that JPL Sentry has updated its 2005 TM173 risk assessment - see above Noted that JPL Sentry has updated its 2010 VQ risk assessment - see above Noted that JPL Sentry has updated its 2010 WW8 risk assessment - see above Noted that JPL Sentry has updated its 2010 XC risk assessment - see above Noted that JPL Sentry has updated its 2020 VK6 risk assessment - see above Noted that JPL Sentry has updated its 2020 XR risk assessment - see above
0100	Grabbed MPEC 2020-X91 - 2015 XY169 - see above

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