2020-12-09 Tracking News

Contents on 9 December '20

IAU Minor Planet Center
- NEOCP Activity -- 67 listings
- New MPECs -- 20 MPECs
Observers -- 45 observers
Impact Risk Monitoring -- seven objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1227 risk-listed objects, 137 have had news in the last 31 days. Updated at 1703 UTC on 9 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 9 December '20

The MPC's NEO Confirmation Page has 67 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 67 objects listed. Of these, 46 were "one nighters." So far The Tracking News has counted a total of 97 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 9 December '20

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 20 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-X71 time-stamped "03:16 UT" - Comet P/2020 X1 (ATLAS) - see below
MPEC 2020-X72 time-stamped "08:31 UT" - 2020 WZ5 - see below
MPEC 2020-X73 time-stamped "08:36 UT" - 2020 XA2 - see below
MPEC 2020-X74 time-stamped "08:54 UT" - 2020 XB2 - see below
MPEC 2020-X75 time-stamped "08:56 UT" - 2020 XC2 - see below
MPEC 2020-X76 time-stamped "08:57 UT" - 2020 XD2 - see below
MPEC 2020-X77 time-stamped "08:58 UT" - 2020 XE2 - see below
MPEC 2020-X78 time-stamped "09:03 UT" - 2020 XF2 - see below
MPEC 2020-X79 time-stamped "09:05 UT" - 2020 XG2 - see below
MPEC 2020-X80 time-stamped "09:05 UT" - 2020 XH2 - see below
MPEC 2020-X81 time-stamped "09:06 UT" - 2020 XJ2 - see below
MPEC 2020-X82 time-stamped "09:07 UT" - 2020 XK2 - see below
MPEC 2020-X83 time-stamped "10:37 UT" - 2020 XL2 - see below
MPEC 2020-X84 time-stamped "10:38 UT" - 2020 XM2 - see below
MPEC 2020-X85 time-stamped "12:18 UT" - Daily Orbit Update - see below
MPEC 2020-X86 time-stamped "17:05 UT" - 1997 XE10 - see below
MPEC 2020-X87 time-stamped "17:09 UT" - 2020 XN2 - see below
MPEC 2020-X88 time-stamped "17:11 UT" - 2020 XO2 - see below
MPEC 2020-X89 time-stamped "17:12 UT" - 2020 XP2 - see below
MPEC 2020-X90 time-stamped "19:24 UT" - 2020 XQ2

MPEC 2020-X90 - "19:24 UT" - 2020 XQ2

K20X02Q 2020 XQ2 (small asteroid, i=42.0°, H=22.8 ~93m) was picked up at 1234 UT on 8 Dec. by ATLAS Haleakala, observing it at Dec. 8.49-53p7, 8.60p5, and 9.43-45p4. This detection was confirmed by ATLAS Mauna Loa (Dec. 8.60p5), JAXA Space Tracking & Communications Center (JAXA STCC) (Dec. 8.64-66p3 & 9.52-53p3), Moriyama Obs. (Dec. 8.65p2 & 9.55p2), Xingming Obs. #3 (Dec. 8.69p5), ROASTERR-1 (Dec. 8.80-81p3), Dax Obs. (Dec. 9.03-04p3), Astronomical Research Obs. Westfield (Dec. 9.25-26p6), Sandlot Obs. (Dec. 9.26-27p4), Wiggins Obs. (Dec. 9.33-34p9), Steward Obs. Mt. Lemmon Station (Dec. 9.35p4), and Visnjan Obs. (Dec. 9.76p6).

MPEC 2020-X89 - "17:12 UT" - 2020 XP2

K20X02P 2020 XP2 (small asteroid, Earth MOID=3.0 LD, H=22.1 ~129m) was picked up at 1454 UT on 7 Dec. by Pan-STARRS 1 (PS1), observing it at Dec. 7.62-64p3 and 9.55-56p2. This detection was confirmed by Sandlot Obs. (Dec. 8.41-49p5 & 9.33-41p5) and Steward Mt. Lemmon Sta. (Dec. 9.38p4).

MPEC 2020-X88 - "17:11 UT" - 2020 XO2

K20X02O 2020 XO2 (small asteroid, Earth MOID=5.8 LD, H=24.7 ~39m) was picked up at 0716 UT on 8 Dec. by the Mt. Lemmon Survey (MLS), observing it at Dec. 8.30-31p3 and 9.27p3. This detection was confirmed by Pan-STARRS 2 (PS2) (Dec. 8.35-39p4), Steward Mt. Lemmon Sta. (Dec. 8.38p4 & 9.14p4), Xingming Obs. #3 (Dec. 8.69p4), Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Dec. 9.20-21p4), Mt. John Obs. (Dec. 9.50p4), and Arcadia Obs. (Dec. 9.50-53p3).

MPEC 2020-X87 - "17:09 UT" - 2020 XN2

K20X02N 2020 XN2 (small asteroid, Earth MOID=8.2 LD, H=23.4 ~71m) was picked up at 0303 UT on 8 Dec. by the Catalina Sky Survey (CSS), observing it at Dec. 8.13-14p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 8.18-19p7 & 9.08p4), the Bok Telescope (Dec. 8.25p4), program code 1 via Schwarzschild Obs. (Dec. 8.68p3), Xingming Obs. #3 (Dec. 8.69p5), North Obs. (Dec. 8.79-80p8), ROASTERR-1 (Dec. 8.82-83p3), Squirrel Valley Obs. (Dec. 8.99-02p3), Tebbutt Obs. (Dec. 9.10-11p4), ARO Westfield (Dec. 9.21p3), Wiggins Obs. (Dec. 9.28-29p6), and Moriyama Obs. (Dec. 9.53p4).

MPEC 2020-X86 - "17:05 UT" - 1997 XE10

J97X10E 1997 XE10 (small asteroid, Earth MOID=5.7 LD, H=24.58 ~41m) from MLS (Dec. 7.13-15p4), Steward Mt. Lemmon Sta. (Dec. 7.21p4, 8.09-10p8 & 9.11-12p4), Tebbutt Obs. (Dec. 9.05-06p3), Sandlot Obs. (Dec. 9.05-08p3), and Holmes/CTIO (Dec. 9.08-09p3)

<< DOU on 9 December '20 >> MPEC 2020-X85 - "12:18 UT" - Daily Orbit Update

Observations of risk-listed objects
K20X01G 2020 XG1 (i=50.7°, arc=4 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (Dec. 9.39p4)
K20X00R 2020 XR (Q=4.025 AU, arc=5 days, H=19.7 ~389m) from the Spacewatch 0.9m telescope (Dec. 9.07-08p3), Steward Mt. Lemmon Sta. (Dec. 9.08-09p4), and UH/Tholen NEO Follow-Up 2.24m Telescope (Dec. 9.19p2)
K20X00F 2020 XF (small asteroid, arc=5 days, H=26.7 ~15m, close passer, NHATS target) from Foxfire Village Obs. (Dec. 9.02-05p3) and Steward Mt. Lemmon Sta. (Dec. 9.12p4)
K20X00E 2020 XE (small asteroid, Q=4.482 AU, arc=5 days, H=26.2 ~19m, close passer) from the Spacewatch 1.8m telescope (Dec. 9.37p2 at R=22.8-23.0)
Observations of close-passing objects
K20X01Q 2020 XQ1 (arc=3 days, H=25.7 ~25m) from Steward Mt. Lemmon Sta. (Dec. 9.12-13p4)
K20X01H 2020 XH1 (arc=2 days, H=22.8 ~93m) from Wickede Obs. (Dec. 7.90p5)
K20X01C 2020 XC1 (arc=3 days, H=27.0 ~13m, NHATS target) from Steward Mt. Lemmon Sta. (Dec. 9.39p4)
K20X01B 2020 XB1 (arc=3 days, H=26.2 ~19m) from Steward Mt. Lemmon Sta. (Dec. 9.39p4)
K20X00H 2020 XH (arc=4 days, H=24.7 ~39m) from CSS (Dec. 8.28-29p4) and ATLAS Haleakala (Dec. 8.46-47p4)
K20W05Z 2020 WZ5 (arc=15 days, H=26.3 ~19m) from Steward Mt. Lemmon Sta. (Dec. 9.45-46p4)
K20O05K 2020 OK5 (arc=148 days, H=25.5 ~27m, NHATS target) from Steward Mt. Lemmon Sta. (Dec. 8.54p4) and PS1 (Dec. 8.55-58p3)
Observation campaigns (NHATS targets, radar support)
K20W03Q 2020 WQ3 (arc=30 days, H=25.8 ~23m, NHATS) from Steward Mt. Lemmon Sta. (Dec. 8.53p4)
K20W03K 2020 WK3 (arc=16 days, H=25.1 ~32m, NHATS) from MLS (Dec. 8.39p2) and ATLAS Mauna Loa (Dec. 8.44-45p4)
K20W03F 2020 WF3 (arc=18 days, H=23.7 ~62m, NHATS) from Spacewatch 0.9m (Dec. 9.40p2)
K20V02Z 2020 VZ2 (arc=24 days, H=24.9 ~35m, NHATS) from Holmes/CTIO (Dec. 5.13-15p3)
K20V01Y 2020 VY1 (arc=27 days, H=25.9 ~22m, NHATS) from Holmes/CTIO (Dec. 5.09p2)
K20T08J 2020 TJ8 (arc=55 days, H=25.1 ~32m, NHATS) from Steward Mt. Lemmon Sta. (Dec. 8.51p3)
K20S00O 2020 SO (NHATS) from MLS (Dec. 9.11-12p4) and ATLAS Mauna Loa (Dec. 9.31-34p4)
K20R02W 2020 RW2 (arc=99 days, H=22.8 ~93m, NHATS) from Holmes/CTIO (Dec. 5.28-30p3)
K17B30B 2017 BB30 (arc=7 days, H=25.2 ~31m, NHATS) from Spacewatch 1.8m (2017 Jan. 30.27p2)
K16T00K 2016 TK (arc=2 opp, H=23.3 ~74m, NHATS) from Spacewatch 1.8m (2017 Feb. 24.39-40p3)
K15AO5Y 2015 AY245 (arc=2 opp, H=21.2 ~195m, NHATS) from Spacewatch 0.9m (Dec. 8.51-54p3)
K11G60D 2011 GD60 (arc=4 opp, H=21.8 ~148m, NHATS) from MLS (Dec. 8.32-33p4)
11398 11398 1998 YP11 (radar) from MLS (Dec. 8.25-27p3)
04179 4179 Toutatis (1989 AC) (radar) from Transit Dreams Obs. (Dec. 8.98-99p3)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20X01O 2020 XO1 (arc=3 days, H=23.8 ~59m) from Steward Mt. Lemmon Sta. (Dec. 9.12p4)
K20W04E 2020 WE4 (arc=14 days, H=23.5 ~68m) from Holmes/CTIO (Dec. 7.21-22p3)
K20W02K 2020 WK2 (arc=6 days, H=23.7 ~62m) from Castelmartini Obs. (Nov. 22.88-89p3)
K20W01H 2020 WH1 (arc=22 days, H=24.5 ~43m) from Holmes/CTIO (Dec. 5.25-27p3)
K20V07C 2020 VC7 (arc=33 days, H=23.7 ~62m) from ATLAS Haleakala (Dec. 8.29-32p4)
K20V03Q 2020 VQ3 (arc=28 days, H=22.9 ~89m) from PS2 (Dec. 8.41-42p2)
K20V02F 2020 VF2 (arc=25 days, H=23.6 ~65m) from Holmes/CTIO (Dec. 5.17-18p3)
K20V00T 2020 VT (arc=35 days, H=25.2 ~31m) from MLS (Dec. 8.32-33p4) and Spacewatch 0.9m (Dec. 9.42-43p2)
K20T07T 2020 TT7 (arc=56 days, H=22.2 ~123m) from MLS (Dec. 9.33-35p4)
K20S07A 2020 SA7 (arc=21 days, H=25.1 ~32m) from ARO Westfield (Oct. 17.26-27p2 at V=22.2)
K20S01N 2020 SN1 (arc=155 days, H=22.9 ~89m) from ARO Westfield (Oct. 17.19-21p2 at V=22.1-2)
K20Q05D 2020 QD5 (Q=4.347 AU, arc=115 days, H=23.2 ~78m) from Steward Mt. Lemmon Sta. (Dec. 8.52p3)
K20Q02V 2020 QV2 (arc=8 days, H=23.8 ~59m) from ARO Westfield (Aug. 22.31-33p5 at V=22.0-22.3)
K20O00V 2020 OV (arc=25 days, H=24.2 ~49m) from ARO Westfield (July 27.23-24p3 at V=21.8-22.2)
K20M03W 2020 MW3 (arc=29 days, H=23.4 ~71m) from ARO Westfield (July 18.36-37p3 at V=22.2-3)
K20T03P 2020 TP3 (arc=69 days, H=22.0 ~135m) from Holmes/CTIO (Dec. 5.20-21p2)
K17A13Z 2017 AZ13 (arc=2 opp, H=21.8 ~148m) from Spacewatch 1.8m (2017 Jan. 10.54p3)
K12L01D 2012 LD1 (arc=3 opp, H=21.9 ~141m) from PS2 (Dec. 8.40-44p4)
K09W11D 2009 WD11 (arc=2 opp, H=22.0 ~135m) from ATLAS Haleakala (Dec. 8.33-35p4)
Observations of other objects
K20X02C 2020 XC2 (arc=3 days, H=21.5 ~170m) from Tholen 2.24m (Dec. 9.20p2 at G=21.93-22.03)
K20X01F 2020 XF1 (i=52.1°, arc=4 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (Dec. 9.35p2)
K20X00S 2020 XS (i=50.6°, arc=4 days, H=21.3 ~186m) from PS1 (Dec. 8.25-29p3)
K20W05S 2020 WS5 (i=40.9°, Q=4.036 AU, arc=11 days, H=21.0 ~214m) from MLS (Dec. 8.34-35p4)
K20W05M 2020 WM5 (Q=4.855 AU, arc=10 days, H=21.0 ~214m) from CSS (Dec. 8.41-42p4)
K20W05A 2020 WA5 (arc=13 days, H=21.5 ~170m) from CSS (Dec. 8.20-21p3)
K20U06R 2020 UR6 (arc=88 days, H=20.9 ~224m) from Steward Mt. Lemmon Sta. (Dec. 8.54p4)
K20U02G 2020 UG2 (arc=51 days, H=21.6 ~162m) from Holmes/CTIO (Dec. 5.10-11p3)
K20U01V 2020 UV1 (arc=52 days, H=20.0 ~339m) from Holmes/CTIO (Dec. 5.24p3)
K20T07C 2020 TC7 (arc=52 days, H=19.6 ~407m) from Holmes/CTIO (Dec. 5.07p3)
K20T04G 2020 TG4 (Q=4.171 AU, arc=80 days, H=20.1 ~323m) from Wickede Obs. (Dec. 7.87-88p6) and ATLAS Haleakala (Dec. 8.44-49p4)
K20R05Z 2020 RZ5 (arc=112 days, H=20.7 ~245m) from Holmes/CTIO (Dec. 7.24-25p3)
K20Q07A 2020 QA7 (Q=4.150 AU, arc=102 days, H=20.2 ~309m) from ATLAS Haleakala (Dec. 8.41-43p4)
K20Q06F 2020 QF6 (i=73.6°, Q=4.504 AU, arc=105 days, H=17.7 ~977m) from Holmes/CTIO (Dec. 5.31-33p3)
K20Q03C 2020 QC3 (arc=14 days, H=19.4 ~446m) from ARO Westfield (Aug. 25.23-25p3 at V=22.1-3)
K20Q00S 2020 QS (Q=4.130 AU, arc=119 days, H=21.6 ~162m) from Holmes/CTIO (Dec. 7.19-20p3)
K20P05C 2020 PC5 (Q=4.177 AU, arc=116 days, H=18.5 ~676m) from ATLAS Mauna Loa (Dec. 8.29-32p4)
K20P03O 2020 PO3 (i=36.1°, arc=51 days, H=20.0 ~339m) from ARO Westfield (Aug. 22.11-14p4 at V=21.9-22.3, 25.11-14p3 at V=22.1-4 & 26.12-13p3 at V=21.8-22.2)
K20O08C 2020 OC8 (arc=176 days, H=20.8 ~234m) from MLS (Dec. 8.25-26p3)
K20O07C 2020 OC7 (arc=165 days, H=20.9 ~224m) from MLS (Dec. 8.43-44p3)
K20M05E 2020 ME5 (arc=2 opp, H=20.5 ~269m) from MLS (Dec. 8.19-20p3)
K20M02W 2020 MW2 (arc=49 days, H=21.2 ~195m) from ARO Westfield (Aug. 10.18-20p3 at V=22.0-22.3)
K18V00X 2018 VX (arc=3 opp, H=21.1 ~204m) from Spacewatch 1.8m (Dec. 8.51-52p3 at R=22.0-22.8)
K18R07W 2018 RW7 (arc=6 opp, H=21.6 ~162m) from ARO Westfield (Aug. 26.18-19p3 at V=22.1-3)
K18G04X 2018 GX4 (arc=4 opp, H=19.2 ~490m) from CSS (Dec. 8.25-26p3)
K17V12T 2017 VT12 (arc=4 opp, H=20.4 ~282m) from CSS (Dec. 8.06-08p4)
K17R15D 2017 RD15 (arc=3 opp, H=19.5 ~426m) from MLS (Dec. 8.10-12p4)
K17B31L 2017 BL31 (q=0.370 AU, Q=4.566 AU, arc=3 opp, H=18.9 ~562m) from Steward Mt. Lemmon Sta. (Dec. 9.45-47p3)
K17A03W 2017 AW3 (arc=46 days, H=20.9 ~224m) from Spacewatch 1.8m (2017 Jan. 9.24-25p2)
K16W07J 2016 WJ7 (arc=149 days, H=21.6 ~162m) from Spacewatch 1.8m (2017 Feb. 8.10-12p2)
K16W01E 2016 WE1 (arc=4 opp, H=19.5 ~426m) from Spacewatch 1.8m (2017 Feb. 17.11-12p2)
K16U31J 2016 UJ31 (arc=2 opp, H=19.5 ~426m) from Spacewatch 1.8m (2017 Jan. 29.23-24p2)
K16S17D 2016 SD17 (arc=175 days, H=19.9 ~355m) from Spacewatch 1.8m (2017 Jan. 29.15-16p2)
K16O05P 2016 OP5 (arc=4 opp, H=20.9 ~224m) from MLS (Dec. 8.14-16p4)
K16J33U 2016 JU33 (arc=3 opp, H=20.8 ~234m) from Spacewatch 0.9m (Dec. 9.37-38p3)
K16E84L 2016 EL84 (arc=4 opp, H=19.8 ~371m) from PS2 (Dec. 8.61-63p2) and PS1 (Dec. 8.61-64p4)
K15XQ1W 2015 XW261 (arc=4 opp, H=21.4 ~178m) from ARO Westfield (Aug. 10.10-12p3 at V=22.2-4)
K15V66D 2015 VD66 (arc=4 opp, H=20.0 ~339m) from Spacewatch 0.9m (Dec. 8.41-44p3)
K15B04F 2015 BF4 (arc=6 opp, H=20.5 ~269m) from Castelmartini Obs. (Nov. 23.00-01p3), ATLAS Haleakala (Dec. 8.34-37p7), and PS2 (Dec. 8.39-41p2)
K15A45S 2015 AS45 (Q=5.237 AU, arc=4 opp, H=17.4 ~1.12 km) from MLS (Dec. 8.44-46p4)
K14Y15C 2014 YC15 (arc=3 opp, H=18.6 ~645m) from PS1 (Dec. 8.21-22p3)
K14Wa5P 2014 WP365 (arc=3 opp, H=20.3 ~295m) from ARO Westfield (July 27.19-21p4 at V=22.0-22.1 & Aug. 10.14-16p2 at V=22.1-3)
K14Wa5G 2014 WG365 (arc=5 opp, H=20.0 ~339m) from ATLAS Haleakala (Dec. 8.44-49p4)
K14UB6R 2014 UR116 (arc=6 opp, H=19.8 ~371m) from PS2 (Dec. 8.21-25p4)
K14L14U 2014 LU14 (arc=4 opp, H=19.7 ~389m) from ARO Westfield (July 18.27-29p3 at V=22.1-6)
K13P67F 2013 PF67 (arc=3 opp, H=20.0 ~339m) from ARO Westfield (July 18.23-25p3 at V=22.1-4)
K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from Castelmartini Obs. (Nov. 22.99p3), ATLAS Haleakala (Dec. 8.35-36p5), and PS1 (Dec. 8.35-37p3)
K13L16E 2013 LE16 (Q=4.124 AU, arc=2 opp, H=18.5 ~676m) from Spacewatch 1.8m (2017 Feb. 22.51-53p2)
K13B27G 2013 BG27 (arc=5 opp, H=20.4 ~282m) from MLS (Dec. 8.28-29p3)
K12UD6R 2012 UR136 (arc=5 opp, H=19.1 ~513m) from PS1 (Dec. 8.25-29p4 at w=21.9-22.2)
K12S22A 2012 SA22 (arc=3 opp, H=18.1 ~812m) from ATLAS Haleakala (Dec. 8.48-50p3)
K10VJ8U 2010 VU198 (arc=3 opp, H=18.6 ~645m) from MLS (Dec. 8.36-37p4)
K07S02V 2007 SV2 (arc=3 opp, H=21.2 ~195m) from ARO Westfield (Aug. 25.33-35p3 at V=22.0-22.4)
K07A12C 2007 AC12 (Q=4.304 AU, arc=3 opp, H=18.3 ~741m) from MLS (Dec. 8.10-12p4)
K04A00C 2004 AC (arc=4 opp, H=19.0 ~537m) from CSS (Dec. 8.45-49p7)
K03Y01M 2003 YM1 (arc=3 opp, H=18.1 ~812m) from CSS (Dec. 8.34-36p3)
K03Y00J 2003 YJ (arc=4 opp, H=20.3 ~295m) from ATLAS Mauna Loa (Dec. 8.42-47p4)
K03X00M 2003 XM (Q=5.375 AU, arc=3 opp, H=19.1 ~513m) from PS2 (Dec. 8.20-24p4)
K02T67S 2002 TS67 (arc=6 opp, H=19.1 ~513m) from ATLAS Haleakala (Dec. 8.45-46p3)
K02L03G 2002 LG3 (Q=4.124 AU, arc=3 opp, H=19.8 ~371m) from MLS (Dec. 8.49-50p4)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.7 ~616m) from CSS (Dec. 8.34-36p4)
K00Q07V 2000 QV7 (arc=3 opp, H=21.3 ~186m) from Spacewatch 1.8m (2017 Jan. 7.50-51p2)
J99S10K 1999 SK10 (arc=4 opp, H=19.7 ~389m) from MLS (Dec. 8.10-12p4)
J98W02A 1998 WA2 (Q=4.271 AU, arc=2 opp, H=19.8 ~371m) from Castelmartini Obs. (Nov. 23.06-07p3)
s5274 545274 2011 FZ2 from Bok Tel. (Dec. 8.46-48p4)
r5221 535221 2014 YN44 from Bok Tel. (Dec. 8.49-51p4)
r0938 530938 2011 XE from ATLAS Mauna Loa (Dec. 8.29-31p4)
p4041 514041 2014 MQ18 from PS1 (Dec. 8.56-60p3)
o6779 506779 2006 YY2 from MLS (Dec. 8.34-35p4)
o0080 500080 2011 WV134 from PS1 (Dec. 8.26-29p4)
k5824 465824 2010 FR from ARO Westfield (July 18.29-30p3 at V=22.2-3)
k5749 465749 2009 WO6 from CSS (Dec. 8.32-34p4)
j2307 452307 Manawydan (1997 XV11) from ATLAS Haleakala (Dec. 8.37-39p6)
i7903 447903 2007 XJ20 from PS1 (Dec. 8.25-29p3 at w=21.8-22.3)
h8902 438902 2009 WF104 from CSS (Dec. 8.32-33p4) and ATLAS Haleakala (Dec. 8.47-51p4)
h5138 435138 2007 GD49 from PS1 (Dec. 8.56-60p3)
h4344 434344 2004 RV10 from ARO Westfield (Aug. 22.09-11p3 at V=22.2-4)
g8086 428086 2006 NM from CSS (Dec. 8.15-16p4) and ATLAS Haleakala (Dec. 8.33-35p4)
g0302 420302 2011 XZ1 from PS1 (Dec. 8.30-34p3)
f5987 415987 2002 AE9 from MLS (Dec. 8.45-46p4)
f5029 415029 2011 UL21 from CSS (Dec. 8.25-27p3) and Bok Tel. (Dec. 8.40-42p4)
f4903 414903 2010 XT45 from Castelmartini Obs. (Nov. 23.04p2)
e8752 408752 1991 TB2 from PS1 (Dec. 8.21-22p3)
e7653 407653 2011 QF3 from MLS (Dec. 8.08-10p4)
c0929 380929 2006 HU30 from Castelmartini Obs. (Nov. 22.94p3)
c0359 380359 2002 TN30 from CSS (Dec. 8.43-45p4)
X7084 337084 1998 SE36 from MLS (Dec. 8.38-40p4)
V9988 319988 2007 DK from PS1 (Dec. 8.31-32p2)
U5090 305090 2007 VQ4 from ATLAS Haleakala (Dec. 8.63-66p4)
U1011 301011 2008 JO from PS1 (Dec. 8.21-22p3)
S3729 283729 2002 UX from ATLAS Haleakala (Dec. 8.45-46p3)
R5714 275714 2000 YH4 from ATLAS Mauna Loa (Dec. 8.31-33p4)
R4138 274138 2008 FU6 from MLS (Dec. 8.41-42p4)
Q5661 265661 2005 UB from MLS (Dec. 8.51-52p4)
L6707 216707 2004 XP164 from MLS (Dec. 8.44-46p4)
K2411 202411 2005 RC from MLS (Dec. 8.40-42p4)
I6822 186822 2004 FE31 from ATLAS Mauna Loa (Dec. 8.32-36p4)
G9675 169675 2002 JM97 from MLS (Dec. 8.12-14p4)
G3364 163364 2002 OD20 from Castelmartini Obs. (Nov. 23.03p1), PS2 (Dec. 8.22-25p3), and ATLAS Haleakala (Dec. 8.33-35p4)
G3081 163081 2002 AG29 from MLS (Dec. 8.11-12p4)
G3014 163014 2001 UA5 from MLS (Dec. 8.06-08p4)
G2173 162173 Ryugu (1999 JU3) from MLS (Dec. 8.08-10p4)
G2039 162039 1996 JG from CSS (Dec. 8.28-29p3)
F9402 159402 1999 AP10 from program code 1 via Kuban State Univ. Obs. (Dec. 8.76-84p41)
F4330 154330 2002 VX94 from ATLAS Haleakala (Dec. 8.33-35p4)
F4302 154302 2002 UQ3 from ATLAS Mauna Loa (Dec. 8.27-29p4)
F3306 153306 2001 JL1 from PS1 (Dec. 8.30-31p2)
F3201 153201 2000 WO107 from Foxfire Village Obs. (Dec. 9.05-06p2)
F2978 152978 2000 GJ147 from Castelmartini Obs. (Nov. 23.02-03p3) and ATLAS Haleakala (Dec. 8.31-33p4)
E4411 144411 2004 EW9 from Castelmartini Obs. (Nov. 22.95p3) and ATLAS Haleakala (Dec. 8.31-32p4)
E2464 142464 2002 TC9 from ATLAS Mauna Loa (Dec. 8.54-55p4)
E1498 141498 2002 EZ16 from MLS (Dec. 8.48-50p4)
D8947 138947 2001 BA40 from ATLAS Haleakala (Dec. 8.45-49p4)
D8095 138095 2000 DK79 from ATLAS Mauna Loa (Dec. 8.21-24p4)
D7052 137052 Tjelvar (1998 VO33) from CSS (Dec. 8.54p1)
B2221 112221 2002 KH4 from PS2 (Dec. 8.21-24p4)
99935 99935 2002 AV4 from CSS (Dec. 8.41-42p2)
99907 99907 1989 VA from MLS (Dec. 8.08-10p4)
89355 89355 2001 VS78 from ATLAS Haleakala (Dec. 8.52p3)
88188 88188 2000 XH44 from CSS (Dec. 8.28-29p4)
87684 87684 2000 SY2 from ATLAS Mauna Loa (Dec. 8.27-30p8)
85275 85275 1994 LY from ATLAS Mauna Loa (Dec. 8.37-42p3)
68346 68346 2001 KZ66 from MLS (Dec. 8.53-54p4)
66272 66272 1999 JW6 from Foxfire Village Obs. (Dec. 9.05-07p3)
65717 65717 1993 BX3 from ATLAS Mauna Loa (Dec. 8.33-40p4)
55532 55532 2001 WG2 from ATLAS Haleakala (Dec. 8.38-40p4)
53435 53435 1999 VM40 from CSS (Dec. 8.35-36p2)
36284 36284 2000 DM8 from CSS (Dec. 8.06-08p4)
36183 36183 1999 TX16 from ATLAS Mauna Loa (Dec. 8.21-23p4)
35107 35107 1991 VH from ATLAS Mauna Loa (Dec. 8.21-24p4)
31669 31669 1999 JT6 from CSS (Dec. 8.54p4)
23187 23187 2000 PN9 from ATLAS Mauna Loa (Dec. 8.20-22p4)
21374 21374 1997 WS22 from CSS (Dec. 8.32-34p4)
21088 21088 Chelyabinsk (1992 BL2) from ATLAS Haleakala (Dec. 8.54-56p4)
19764 19764 2000 NF5 from program code 1 via Kitab Obs. (Oct. 11.73p1, 11.81p1 & 11.87-90p3)
16834 16834 1997 WU22 from ATLAS Haleakala (Dec. 8.33-35p4)
12711 12711 Tukmit (1991 BB) from ATLAS Mauna Loa (Dec. 8.63-66p4)
12538 12538 1998 OH from ATLAS Mauna Loa (Dec. 8.48-49p4)
10115 10115 1992 SK from ATLAS Haleakala (Dec. 8.29-31p4)
09172 9172 Abhramu (1989 OB) from Transit Dreams Obs. (Dec. 9.05-07p3)
08035 8035 1992 TB from SATINO-1 (July 17.01-03p2)
07977 7977 1977 QQ5 from ATLAS Mauna Loa (Dec. 8.20-22p3)
07753 7753 1988 XB from ATLAS Haleakala (Dec. 8.46-47p4)
06569 6569 Ondaatje (1993 MO) from ATLAS Mauna Loa (Dec. 8.24-26p4)
06239 6239 Minos (1989 QF) from PS1 (Dec. 8.30-34p4)
06053 6053 1993 BW3 from ATLAS Haleakala (Dec. 8.19-21p4)
05879 5879 Almeria (1992 CH1) from ATLAS Mauna Loa (Dec. 8.49-56p6)
05836 5836 1993 MF from ATLAS Haleakala (Dec. 8.44-48p4)
04947 4947 Ninkasi (1988 TJ1) from MLS (Dec. 8.08-10p4)
04450 4450 Pan (1987 SY) from PS1 (Dec. 8.30-34p4)
04055 4055 Magellan (1985 DO2) from ATLAS Mauna Loa (Dec. 8.37-42p8)
03908 3908 Nyx (1980 PA) from MLS (Dec. 8.06-07p4)
03838 3838 Epona (1986 WA) from MLS (Dec. 8.38-40p3)
02368 2368 Beltrovata (1977 RA) from ATLAS Haleakala (Dec. 8.49-53p4)
02212 2212 Hephaistos (1978 SB) from ATLAS Haleakala (Dec. 8.30-32p4)
01980 1980 Tezcatlipoca (1950 LA) from ATLAS Mauna Loa (Dec. 8.62-65p4)
01865 1865 Cerberus (1971 UA) from PS1 (Dec. 8.21-22p4)
01580 1580 Betulia (1950 KA) from ATLAS Haleakala (Dec. 8.39-42p4)
01036 1036 Ganymed (1924 TD) from ATLAS Mauna Loa (Dec. 8.48-49p4)

MPEC 2020-X84 - "10:38 UT" - 2020 XM2

K20X02M 2020 XM2 (Q=4.229 AU, H=19.79 ~373m) was picked up at 1151 UT on 6 Dec. by PS1, observing it at Dec. 6.49-53p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 7.30-31p4 & 9.40p4) and Schwarzschild Obs./code 1 (Dec. 8.70-71p3).

MPEC 2020-X83 - "10:37 UT" - 2020 XL2

K20X02L 2020 XL2 (small asteroid, H=23.92 ~56m) was picked up at 0829 UT on 7 Dec. by MLS, observing it at Nov. 27.26-27p3 and Dec. 7.35-37p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 7.41-42p3 & 9.38-39p3) and the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Dec. 8.27p4).

MPEC 2020-X82 - "09:07 UT" - 2020 XK2

K20X02K 2020 XK2 (small asteroid, H=23.02 ~84m) was picked up at 0825 UT on 7 Dec. by PS1, observing it at Dec. 7.35-38p3. This detection was confirmed by Holmes/CTIO (Dec. 8.21-22p3), Spacewatch 1.8m (Dec. 9.25-26p3), and Steward Mt. Lemmon Sta. (Dec. 9.36p4).

MPEC 2020-X81 - "09:06 UT" - 2020 XJ2

K20X02J 2020 XJ2 (small asteroid, H=24.29 ~47m) was picked up at 0531 UT on 7 Dec. by PS1, observing it at Dec. 7.23-27p3. This detection was confirmed by Spacewatch 1.8m (Dec. 8.41-42p3), Schwarzschild Obs./code 1 (Dec. 8.75-76p2), Tebbutt Obs. (Dec. 9.12-13p2), and Steward Mt. Lemmon Sta. (Dec. 9.36-37p4).

MPEC 2020-X80 - "09:05 UT" - 2020 XH2

K20X02H 2020 XH2 (risk listed, Earth MOID=1.9 LD, H=27.02 ~13m, close passer, NHATS target) was picked up at 0834 UT on 8 Dec. by MLS, observing it at Dec. 8.36-37p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 8.44p4 & 9.26p4) and Holmes/CTIO (Dec. 9.24p3).

MPEC 2020-X79 - "09:05 UT" - 2020 XG2

K20X02G 2020 XG2 (Earth MOID=0.0 LD, H=27.69 ~10m) was picked up at 1017 UT on 8 Dec. by ATLAS Mauna Loa, observing it at Dec. 8.43-45p8 and 8.60p5. This detection was confirmed by Holmes/CTIO (Dec. 9.24-25p5) and Steward Mt. Lemmon Sta. (Dec. 9.26p4).

MPEC 2020-X78 - "09:03 UT" - 2020 XF2

K20X02F 2020 XF2 (small asteroid, H=25.35 ~29m) was picked up at 0904 UT on 7 Dec. by Bok Tel., observing it at Dec. 7.38-39p3. This detection was confirmed by CSS-Kuiper (Dec. 7.42-44p3 & 8.33-34p4), Spacewatch 1.8m (Dec. 9.19-20p3), and Steward Mt. Lemmon Sta. (Dec. 9.27p3).

MPEC 2020-X77 - "08:58 UT" - 2020 XE2

K20X02E 2020 XE2 (small asteroid, H=24.36 ~45m) was picked up at 0955 UT on 7 Dec. by Bok Tel., observing it at Dec. 7.41-43p4. This detection was confirmed by Spacewatch 1.8m (Dec. 7.47-49p3 & 9.21-22p3), Spacewatch 0.9m (Dec. 8.27-30p2), and CSS-Kuiper (Dec. 8.34-35p4).

MPEC 2020-X76 - "08:57 UT" - 2020 XD2

K20X02D 2020 XD2 (small asteroid, H=24.11 ~51m) was picked up at 1029 UT on 7 Dec. by Bok Tel., observing it at Dec. 7.44-45p4. This detection was confirmed by Spacewatch 1.8m (Dec. 7.49-50p3 & 8.47-49p2), CSS-Kuiper (Dec. 7.50-51p3 at G=22.05-56 & 8.36-38p4 at G=20.76-21.43), and Steward Mt. Lemmon Sta. (Dec. 9.28-29p2).

MPEC 2020-X75 - "08:56 UT" - 2020 XC2

K20X02C 2020 XC2 (H=21.62 ~161m) was picked up at 0808 UT on 6 Dec. by PS1, observing it at Dec. 6.34-36p3. This detection was confirmed by Holmes/CTIO (Dec. 7.12-13p3 at G=22.1-3, 8.09-10p3 at G=21.6-7 & 9.07-08p3 at G=22.1-4).

MPEC 2020-X74 - "08:54 UT" - 2020 XB2

K20X02B 2020 XB2 (Earth MOID=5.7 LD, H=26.00 ~21m) was picked up at 0900 UT on 7 Dec. by MLS, observing it at Dec. 7.38-39p4 and 8.27p4. This detection was confirmed by PS2 (Dec. 7.38-39p2), Spacewatch 0.9m (Dec. 7.43-44p3), Steward Mt. Lemmon Sta. (Dec. 7.44p4 & 9.26p4), Sandlot Obs. (Dec. 8.27-29p3), and ARO Westfield (Dec. 9.24p3).

MPEC 2020-X73 - "08:36 UT" - 2020 XA2

K20X02A 2020 XA2 (Earth MOID=6.5 LD, H=24.94 ~35m, NHATS) was picked up at 0306 UT on 6 Dec. by MLS, observing it at Dec. 6.13-14p2 and 7.10-11p4. This detection was confirmed by CSS-Kuiper (Dec. 6.19-20p4 at G=21.00-22.36 & 8.07-08p4 at G=20.87-21.79) and Holmes/CTIO (Dec. 9.06p3).

MPEC 2020-X72 - "08:31 UT" - 2020 WZ5

K20W05Z 2020 WZ5 (Earth MOID=4.5 LD, H=26.4 ~18m) was picked up at 0232 UT on 24 Nov. by program code "!" (10) via DECam, observing it at Nov. 24.11-17p4 at g=22.4. This detection was confirmed by ATLAS Haleakala (Dec. 8.44-48p3), ROASTERR-1 (Dec. 8.95-96p3), and Sandlot Obs. (Dec. 9.30-31p4).

MPEC 2020-X71 - "03:16 UT" - Comet P/2020 X1 (ATLAS)

PK20X010 P/2020 X1 (ATLAS) (q=2.889 AU, Q=6.133 AU, TP=2020 Aug. 1.36997 TT) was picked up at 1041 UT on 4 Dec. by ATLAS Haleakala, observing it at Dec. 3.41-43p4 and 4.45-47p4. This detection was confirmed by ATLAS Mauna Loa (Dec. 1.46-49p4), CSS (Dec. 2.32-34p4), PS1 (Dec. 2.47-50p8 & 8.25-29p4), Paus Obs. (Dec. 4.75-76p2), Mountainville Obs. (Dec. 5.10p1, 5.17p1 & 6.09-12p2), Steward Mt. Lemmon Sta. (Dec. 5.11-12p4), Hirao Obs. (Dec. 5.52-53p2), B. Lutkenhoner via Slooh.com Chile Obs. (Dec. 6.07p1 & 6.13p1), Auger Obs. (Dec. 6.12-15p3), ROASTERR-1 (Dec. 6.75-76p2), Clixby Obs. (Dec. 6.82-83p3), Tacande Obs. (Dec. 6.99-01p3), Hidetaka Sato via iTelescope Obs. Mayhill (Dec. 7.06-07p2), program code "%" (14) via Slooh.com Chile Obs. (Dec. 7.13-14p2), Farra d'Isonzo Obs. (Dec. 7.88-90p2), and iTelescope Obs. Mayhill (Dec. 8.14-16p2 & 8.24-25p2).

Observers on 9 December '20

A total of 45 observers appear in today's MPECs.

Code	Observer / observatory
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2020-X88 -- 2020 XO2
`H21`	Astronomical Research Obs. Westfield in Illinois, 19 in MPECs 2020-X74, 2020-X85, 2020-X87 & 2020-X90 -- 2020 XQ2, 2020 XN2, 2020 XB2, 2020 SN1, 2020 SA7, 2020 QV2, 2020 QC3, 2020 PO3, 2020 OV, 2020 MW3, 2020 MW2, 2018 RW7, 2015 XW261, 2014 WP365, 2014 LU14, 2013 PF67, 2007 SV2, 465824, 434344
`T05`	ATLAS Haleakala in Hawaii, 34 in MPECs 2020-X71, 2020-X72, 2020-X85 & 2020-X90 -- 2020 XQ2, 2020 XH, P/2020 X1, 2020 WZ5, 2020 VC7, 2020 TG4, 2020 QA7, 2015 BF4, 2014 WG365, 2013 PY6, 2012 SA22, 2009 WD11, 2002 TS67, 89355, 55532, 452307, 438902, 428086, 305090, 283729, 21088, 16834, 163364, 154330, 152978, 144411, 138947, 10115, 7753, 6053, 5836, 2368, 2212, 1580
`T08`	ATLAS Mauna Loa in Hawaii, 27 in MPECs 2020-X71, 2020-X79, 2020-X85 & 2020-X90 -- 2020 XQ2, 2020 XG2, P/2020 X1, 2020 WK3, 2020 SO, 2020 PC5, 2003 YJ, 87684, 85275, 65717, 530938, 36183, 35107, 275714, 23187, 186822, 154302, 142464, 138095, 12711, 12538, 7977, 6569, 5879, 4055, 1980, 1036
`I47`	Auger Obs. in Argentina, 1 in MPEC 2020-X71 -- P/2020 X1
`V00`	Bok Telescope in Arizona, 7 in MPECs 2020-X76, 2020-X77, 2020-X78, 2020-X85 & 2020-X87 -- 2020 XN2, 2020 XF2, 2020 XE2, 2020 XD2, 545274, 535221, 415029
`160`	Castelmartini Obs. in Italy, 9 in MPEC 2020-X85 -- 2020 WK2, 2015 BF4, 2013 PY6, 1998 WA2, 414903, 380929, 163364, 152978, 144411
`703`	Catalina Sky Survey (CSS) in Arizona, 23 in MPECs 2020-X71, 2020-X85 & 2020-X87 -- 2020 XN2, 2020 XH, P/2020 X1, 2020 WM5, 2020 WA5, 2018 GX4, 2017 VT12, 2004 AC, 2003 YM1, 2002 GZ8, 99935, 88188, 53435, 465749, 438902, 428086, 415029, 380359, 36284, 31669, 21374, 162039, 137052
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 5 in MPECs 2020-X73, 2020-X76, 2020-X77, 2020-X78 & 2020-X83 -- 2020 XL2, 2020 XF2, 2020 XE2, 2020 XD2, 2020 XA2
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 20 in MPECs 2020-X73, 2020-X75, 2020-X79, 2020-X80, 2020-X82, 2020-X85, 2020-X86 & 2020-X88 -- 2020 XO2, 2020 XK2, 2020 XH2, 2020 XG2, 2020 XC2, 2020 XA2, 2020 WH1, 2020 WE4, 2020 VZ2, 2020 VY1, 2020 VF2, 2020 UV1, 2020 UG2, 2020 TP3, 2020 TC7, 2020 RZ5, 2020 RW2, 2020 QS, 2020 QF6, 1997 XE10
`Z99`	Clixby Obs. in England, 1 in MPEC 2020-X71 -- P/2020 X1
`958`	Dax Obs. in France, 1 in MPEC 2020-X90 -- 2020 XQ2
`W84!`	program code "!" (10) via DECam in Chile, 1 in MPEC 2020-X72 -- 2020 WZ5
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-X71 -- P/2020 X1
`W46`	Foxfire Village Obs., 3 in MPEC 2020-X85 -- 2020 XF, 66272, 153201
`P87`	Hirao Obs., 1 in MPEC 2020-X71 -- P/2020 X1
`H06`	iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-X71 -- P/2020 X1
`H06\|`	Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-X71 -- P/2020 X1
`P93`	JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-X90 -- 2020 XQ2
`1861`	program code 1 via Kitab Obs., 1 in MPEC 2020-X85 -- 19764
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-X85 -- 159402
`900`	Moriyama Obs. in Japan, 2 in MPECs 2020-X87 & 2020-X90 -- 2020 XQ2, 2020 XN2
`V01`	Mountainville Obs. in Utah, 1 in MPEC 2020-X71 -- P/2020 X1
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2020-X88 -- 2020 XO2
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 42 in MPECs 2020-X73, 2020-X74, 2020-X80, 2020-X83, 2020-X85, 2020-X86 & 2020-X88 -- 2020 XO2, 2020 XL2, 2020 XH2, 2020 XB2, 2020 XA2, 2020 WS5, 2020 WK3, 2020 VT, 2020 TT7, 2020 SO, 2020 OC8, 2020 OC7, 2020 ME5, 2017 RD15, 2016 OP5, 2015 AS45, 2013 BG27, 2011 GD60, 2010 VU198, 2007 AC12, 2002 LG3, 1999 SK10, 1997 XE10, 99907, 68346, 506779, 415987, 407653, 337084, 274138, 265661, 216707, 202411, 169675, 163081, 163014, 162173, 141498, 11398, 4947, 3908, 3838
`J69`	North Obs. in England, 1 in MPEC 2020-X87 -- 2020 XN2
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 24 in MPECs 2020-X71, 2020-X75, 2020-X81, 2020-X82, 2020-X84, 2020-X85 & 2020-X89 -- 2020 XS, 2020 XP2, 2020 XM2, 2020 XK2, 2020 XJ2, 2020 XC2, P/2020 X1, 2020 OK5, 2016 EL84, 2014 YC15, 2013 PY6, 2012 UR136, 514041, 500080, 447903, 435138, 420302, 408752, 319988, 301011, 153306, 6239, 4450, 1865
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 10 in MPECs 2020-X74, 2020-X85 & 2020-X88 -- 2020 XO2, 2020 XB2, 2020 VQ3, 2016 EL84, 2015 BF4, 2014 UR116, 2012 LD1, 2003 XM, 163364, 112221
`B49`	Paus Obs. in Spain, 1 in MPEC 2020-X71 -- P/2020 X1
`L04`	ROASTERR-1 in Romania, 4 in MPECs 2020-X71, 2020-X72, 2020-X87 & 2020-X90 -- 2020 XQ2, 2020 XN2, P/2020 X1, 2020 WZ5
`H36`	Sandlot Obs. in Kansas, 5 in MPECs 2020-X72, 2020-X74, 2020-X86, 2020-X89 & 2020-X90 -- 2020 XQ2, 2020 XP2, 2020 XB2, 2020 WZ5, 1997 XE10
`C95`	SATINO-1 in France, 1 in MPEC 2020-X85 -- 8035
`0331`	program code 1 via Schwarzschild Obs. in Germany, 3 in MPECs 2020-X81, 2020-X84 & 2020-X87 -- 2020 XN2, 2020 XM2, 2020 XJ2
`W88%`	program code "%" (14) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-X71 -- P/2020 X1
`W883`	B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-X71 -- P/2020 X1
`691`	Spacewatch 0.9m telescope in Arizona, 8 in MPECs 2020-X74, 2020-X77 & 2020-X85 -- 2020 XR, 2020 XE2, 2020 XB2, 2020 WF3, 2020 VT, 2016 JU33, 2015 VD66, 2015 AY245
`291`	Spacewatch 1.8m telescope in Arizona, 17 in MPECs 2020-X76, 2020-X77, 2020-X78, 2020-X81, 2020-X82 & 2020-X85 -- 2020 XK2, 2020 XJ2, 2020 XF2, 2020 XE2, 2020 XE, 2020 XD2, 2018 VX, 2017 BB30, 2017 AZ13, 2017 AW3, 2016 WJ7, 2016 WE1, 2016 UJ31, 2016 TK, 2016 SD17, 2013 LE16, 2000 QV7
`W34`	Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-X87 -- 2020 XN2
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 30 in MPECs 2020-X71, 2020-X74, 2020-X76, 2020-X78, 2020-X79, 2020-X80, 2020-X81, 2020-X82, 2020-X83, 2020-X84, 2020-X85, 2020-X86, 2020-X87, 2020-X88, 2020-X89 & 2020-X90 -- 2020 XR, 2020 XQ2, 2020 XQ1, 2020 XP2, 2020 XO2, 2020 XO1, 2020 XN2, 2020 XM2, 2020 XL2, 2020 XK2, 2020 XJ2, 2020 XH2, 2020 XG2, 2020 XG1, 2020 XF2, 2020 XF1, 2020 XF, 2020 XD2, 2020 XC1, 2020 XB2, 2020 XB1, P/2020 X1, 2020 WZ5, 2020 WQ3, 2020 UR6, 2020 TJ8, 2020 QD5, 2020 OK5, 2017 BL31, 1997 XE10
`J22`	Tacande Obs. in the Canary Islands, 1 in MPEC 2020-X71 -- P/2020 X1
`858`	Tebbutt Obs. in New Mexico, 3 in MPECs 2020-X81, 2020-X86 & 2020-X87 -- 2020 XN2, 2020 XJ2, 1997 XE10
`W33`	Transit Dreams Obs., 2 in MPEC 2020-X85 -- 9172, 4179
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-X85 -- 2020 XR, 2020 XC2
`L01`	Visnjan Obs. in Croatia, 1 in MPEC 2020-X90 -- 2020 XQ2
`G33`	Wickede Obs. in Germany, 2 in MPEC 2020-X85 -- 2020 XH1, 2020 TG4
`718`	Wiggins Obs. in Utah, 2 in MPECs 2020-X87 & 2020-X90 -- 2020 XQ2, 2020 XN2
`N88`	Xingming Obs. #3, 3 in MPECs 2020-X87, 2020-X88 & 2020-X90 -- 2020 XQ2, 2020 XO2, 2020 XN2

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

Impact Risk Monitoring on 9 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 XH2	JPL Sentry	1702	2059-2119	41	8.2291527e-06	-6.34	-6.83	0	JPL: Computed at 02:44 today Pacific time based on 14 observations spanning .90111 days (2020-Dec-08.356953 to 2020-Dec-09.258062). Diameter approximately 0.014 km. from weighted mean H=26.98.
2020 XH2	NEODyS	1701	2061-2119	28	9.42e-06	-6.29	-6.75	0	NEODyS: "Based on 15 optical observations (of which 1 are rejected as outliers) from 2020-12-08.358 to 2020-12-09.259."

2020 XG1	JPL Sentry	1702	R E M O V E D						JPL: Risk listing removed at 1424 UTC today

2020 XR	NEODyS	1701	2028-2055	3	1.06e-05	-1.64	-1.64	0	NEODyS: "Based on 52 optical observations (of which 1 are rejected as outliers) from 2020-12-04.213 to 2020-12-09.192."

2020 XF	JPL Sentry	1702	2056-2120	144	0.000351798629	-4.53	-5.05	0	JPL: Computed at 06:26 today Pacific time based on 61 observations spanning 4.7969 days (2020-Dec-04.32683 to 2020-Dec-09.123761). Diameter approximately 0.016 km. from weighted mean H=26.66.

2020 XE	JPL Sentry	1702	2040-2044	3	7.0695873e-06	-5.01	-5.02	0	JPL: Computed at 06:02 today Pacific time based on 46 observations spanning 4.9761 days (2020-Dec-04.397182 to 2020-Dec-09.37328). Diameter approximately 0.019 km. from weighted mean H=26.25.
2020 XE	NEODyS	1701	2040-2075	5	1.3e-05	-4.75	-4.75	0	NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2020-12-04.398 to 2020-12-09.374."

2020 PU1	JPL Sentry	1702	2047-2070	3	1.4894e-06	-6.58	-6.94	0	JPL: Computed at 07:39 Oct. 27th Pacific time based on 30 observations spanning 5.6038 days (2020-Aug-12.505525 to 2020-Aug-18.10933). Diameter approximately 0.017 km. from weighted mean H=26.49.

2018 XX2	JPL Sentry	1702	2106-2106	1	1.539e-07	-7.54	-7.54	0	JPL: Computed at 10:09 April 18th of 2019 Pacific time based on 50 observations spanning 31.870 days (2018-Dec-10.53786 to 2019-Jan-11.407964). Diameter approximately 0.021 km. from weighted mean H=26.04.

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 9 December '20

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

2002	Grabbed MPEC 2020-X90 - 2020 XQ2 - see above
1800	Grabbed MPEC 2020-X86 - 1997 XE10 - see above Grabbed MPEC 2020-X87 - 2020 XN2 - see above Grabbed MPEC 2020-X88 - 2020 XO2 - see above Grabbed MPEC 2020-X89 - 2020 XP2 - see above
1702	Noted that JPL Sentry has updated its 2018 XX2 risk assessment - see above Noted that JPL Sentry has updated its 2020 PU1 risk assessment - see above Noted that JPL Sentry has updated its 2020 XE risk assessment - see above Noted that JPL Sentry has updated its 2020 XF risk assessment - see above Noted that JPL Sentry has removed 2020 XG1 as an impact risk - see above Noted that JPL Sentry has posted 2020 XH2 as an impact risk - see above
1701	Noted that NEODyS has updated its 2020 XE risk assessment - see above Noted that NEODyS has posted 2020 XH2 as an impact risk - see above Noted that NEODyS has updated its 2020 XR risk assessment - see above Grabbed MPEC 2020-X72 - 2020 WZ5 - see above Grabbed MPEC 2020-X73 - 2020 XA2 - see above Grabbed MPEC 2020-X74 - 2020 XB2 - see above Grabbed MPEC 2020-X75 - 2020 XC2 - see above Grabbed MPEC 2020-X76 - 2020 XD2 - see above Grabbed MPEC 2020-X77 - 2020 XE2 - see above Grabbed MPEC 2020-X78 - 2020 XF2 - see above Grabbed MPEC 2020-X79 - 2020 XG2 - see above Grabbed MPEC 2020-X80 - 2020 XH2 - see above Grabbed MPEC 2020-X81 - 2020 XJ2 - see above Grabbed MPEC 2020-X82 - 2020 XK2 - see above Grabbed MPEC 2020-X83 - 2020 XL2 - see above Grabbed MPEC 2020-X84 - 2020 XM2 - see above Grabbed MPEC 2020-X85 - Daily Orbit Update - see above
0601	Grabbed MPEC 2020-X71 - Comet P/2020 X1 (ATLAS) - see above

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