Contents on 8 December '20
- Radar Astrometry -- one object
- IAU Minor Planet Center
- NEOCP Activity -- 62 listings
- New MPECs -- thirteen MPECs
- Observers -- 30 observers
- Impact Risk Monitoring -- ten objects
- Chronology
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page
Of 1235 risk-listed objects, 177 have had news in the last 31 days. Updated at 1802 UTC on 8 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.
Radar Astrometry on 8 December '20
Radar observation of one object
The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:
Data update noted at 0745 UTC when the database was dated 7 Dec.
- 153201 2000 WO107 from Goldstone DSS-14 70m antenna (Nov. 29.35 range & Dec. 1.54 range)
Photometry and some astrometry is needed for upcoming radar targets. See Arecibo and Goldstone schedules.
NEOCP Activity on 8 December '20
The MPC's NEO Confirmation Page has 62 listings
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 62 objects listed. Of these, 35 were "one nighters." So far The Tracking News has counted a total of 80 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 8 December '20
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been thirteen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2020-X58 time-stamped "00:44 UT" - 2020 XL1 - see below
- MPEC 2020-X59 time-stamped "02:28 UT" - 2020 XM1 - see below
- MPEC 2020-X60 time-stamped "02:33 UT" - 2020 WW5 - see below
- MPEC 2020-X61 time-stamped "06:37 UT" - 2012 XA - see below
- MPEC 2020-X62 time-stamped "06:57 UT" - 2020 XN1 - see below
- MPEC 2020-X63 time-stamped "07:00 UT" - 2020 XO1 - see below
- MPEC 2020-X64 time-stamped "07:21 UT" - 2020 XP1 - see below
- MPEC 2020-X65 time-stamped "07:23 UT" - 2020 XQ1 - see below
- MPEC 2020-X66 time-stamped "07:25 UT" - 2020 XR1 - see below
- MPEC 2020-X67 time-stamped "07:26 UT" - 2020 XS1 - see below
- MPEC 2020-X68 time-stamped "07:27 UT" - 2020 XT1 - see below
- MPEC 2020-X69 time-stamped "12:17 UT" - Daily Orbit Update - see below
- MPEC 2020-X70 time-stamped "14:26 UT" - 2020 XU1
MPEC 2020-X70 - "14:26 UT" - 2020 XU1
- K20X01U 2020 XU1 (small asteroid, H=22.2 ~123m) was picked up at 0941 UT on 6 Dec. by the Mt. Lemmon Survey (MLS), observing it at Nov. 11.34-35p2 and Dec. 6.40-42p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (Dec. 6.46-47p4, 7.15-16p3 & 8.26-27p3).
<< DOU on 8 December '20 >> MPEC 2020-X69 - "12:17 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K20X00R 2020 XR (Q=4.014 AU, arc=4 days, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (Dec. 8.06-07p4)
- K20X00F 2020 XF (small asteroid, arc=4 days, H=26.7 ~15m, close passer, NHATS target) from ATLAS Mauna Loa (Dec. 7.29-31p6) and Steward Mt. Lemmon Sta. (Dec. 8.07-09p4)
- K20X00E 2020 XE (small asteroid, Q=4.485 AU, arc=4 days, H=26.1 ~20m, close passer) from the Spacewatch 0.9m telescope (Dec. 8.23-26p3 at R=21.5-22.3)
- K20X00C 2020 XC (small asteroid, arc=5 days, H=29.0 ~5m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (Dec. 8.32-33p4)
- K20W05G 2020 WG5 (close passer, NHATS target) from Spacewatch 0.9m (Dec. 8.28-30p3 at R=21.6-22.1)
- K20W03Z 2020 WZ3 (small asteroid, arc=15 days, H=26.1 ~20m, NHATS target) from the Spacewatch 1.8m telescope (Dec. 8.23-25p3)
- K10F07E 2010 FE7 (small asteroid, arc=54 days, H=23.8 ~59m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2010 March 24.55-56p3 at G=22.44-52)
- Observations of recently (no longer) risk-listed objects
- K20W00G 2020 WG (Q=4.010 AU, arc=21 days, H=21.7 ~155m) from Pan-STARRS 2 (PS2) (Dec. 7.39-41p3) and Pan-STARRS 1 (PS1) (Dec. 7.42-46p4)
- Observations of close-passing objects
- K20X01H 2020 XH1 (arc=2 days, H=22.8 ~93m) from JAXA Space Tracking & Communications Center (JAXA STCC) (Dec. 7.65-68p5) and MLS (Dec. 8.27-29p4)
- K20X01E 2020 XE1 (arc=2 days, H=26.8 ~15m) from Steward Mt. Lemmon Sta. (Dec. 7.51-52p4 & 8.42-43p4)
- K20X00O 2020 XO (arc=3 days, H=23.9 ~56m) from Steward Mt. Lemmon Sta. (Dec. 8.27p4)
- K20X00N 2020 XN (arc=3 days, H=24.5 ~43m) from ATLAS Haleakala (Dec. 8.36-38p4)
- K20X00H 2020 XH (arc=4 days, H=24.7 ~39m) from ROASTERR-1 (Dec. 6.88-89p3) and Steward Mt. Lemmon Sta. (Dec. 8.27p3)
- K20W05W 2020 WW5 (arc=18 days, H=28.6 ~6m, NHATS target) from Steward Mt. Lemmon Sta. (Dec. 8.21p4)
- K20W04Z 2020 WZ4 (arc=20 days, H=24.4 ~45m) from PS2 (Dec. 7.35-39p4)
- K20O05K 2020 OK5 (arc=147 days, H=25.4 ~28m, NHATS target) from PS1 (Dec. 7.61-64p4)
- K13F00K 2013 FK (Q=4.056 AU, arc=3 opp, H=23.3 ~74m, radar support) from Spacewatch 1.8m (Dec. 7.51-53p3)
- K12UH1K 2012 UK171 (arc=3 opp, H=24.4 ~45m, NHATS target) from Spacewatch 0.9m (Dec. 8.35-36p3)
- o1647 501647 2014 SD224 from ATLAS Mauna Loa (Dec. 7.46-47p4)
- Observation campaigns (NHATS targets, radar support)
- K20W03Q 2020 WQ3 (arc=29 days, H=25.8 ~23m, NHATS) from the Bok Telescope (Dec. 7.54-55p4)
- K20W03K 2020 WK3 (arc=16 days, H=25.1 ~32m, NHATS) from ATLAS Haleakala (Dec. 7.43-46p4), MLS (Dec. 7.44-45p4), and Steward Mt. Lemmon Sta. (Dec. 8.29p4)
- K20W01D 2020 WD1 (arc=21 days, H=23.6 ~65m, NHATS) from PS1 (Dec. 7.34-38p3)
- K20T08J 2020 TJ8 (arc=54 days, H=25.1 ~32m, NHATS) from Steward Mt. Lemmon Sta. (Dec. 7.51p4)
- K20S00O 2020 SO (NHATS) from ATLAS Haleakala (Dec. 7.28-30p4), Steward Mt. Lemmon Sta. (Dec. 8.12-14p4), and ATLAS Mauna Loa (Dec. 8.27-29p4)
- K20P00P 2020 PP (arc=122 days, H=21.0 ~214m, NHATS) from Spacewatch 1.8m (Dec. 7.54-55p3)
- K20F01T 2020 FT1 (arc=2 opp, H=22.5 ~107m, NHATS) from Bok Tel. (Dec. 7.54-55p4)
- K10W08T 2010 WT8 (arc=4 opp, H=21.9 ~141m, NHATS) from Spacewatch 0.9m (Dec. 7.48-50p2)
- G3693 163693 Atira (2003 CP20) (radar) from ATLAS Haleakala (Dec. 7.63-64p5)
- 11398 11398 1998 YP11 (radar) from PS1 (Dec. 7.33-38p3)
- 04179 4179 Toutatis (1989 AC) (radar) from the Catalina Sky Survey (CSS) (Dec. 7.07-08p2) and ATLAS Haleakala (Dec. 7.21-23p3)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone - Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K20X00Y 2020 XY (arc=3 days, H=25.6 ~26m) from Steward Mt. Lemmon Sta. (Dec. 8.28-29p4)
- K20X00V 2020 XV (arc=3 days, H=23.8 ~59m) from Mountainville Obs. (Dec. 7.26-33p3) and Steward Mt. Lemmon Sta. (Dec. 8.28p4)
- K20X00J 2020 XJ (arc=4 days, H=25.2 ~31m) from Steward Mt. Lemmon Sta. (Dec. 8.28p2)
- K20W04V 2020 WV4 (arc=15 days, H=24.4 ~45m) from Steward Mt. Lemmon Sta. (Dec. 8.47-48p4)
- K20W04N 2020 WN4 (arc=26 days, H=22.5 ~107m) from Steward Mt. Lemmon Sta. (Dec. 8.37-40p4)
- K20W03E 2020 WE3 (arc=17 days, H=25.3 ~29m) from MLS (Dec. 7.37-39p4) and Steward Mt. Lemmon Sta. (Dec. 8.37p4)
- K20V06M 2020 VM6 (arc=24 days, H=22.6 ~102m) from PS1 (Dec. 7.33-38p4)
- K20V04U 2020 VU4 (arc=33 days, H=24.3 ~47m) from Steward Mt. Lemmon Sta. (Dec. 8.41p3)
- K20V03Q 2020 VQ3 (arc=28 days, H=22.9 ~89m) from Steward Mt. Lemmon Sta. (Dec. 8.40-41p4)
- K20V01X 2020 VX1 (arc=27 days, H=22.9 ~89m) from PS2 (Dec. 7.30-34p4)
- K20U03V 2020 UV3 (arc=60 days, H=22.8 ~93m) from PS1 (Dec. 7.34-38p3 at w=22.16-45)
- K20T07Q 2020 TQ7 (arc=79 days, H=22.1 ~129m) from Steward Mt. Lemmon Sta. (Dec. 7.54-55p4)
- K20Q05D 2020 QD5 (Q=4.347 AU, arc=114 days, H=23.2 ~78m) from the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Dec. 7.52p4)
- K20W04X 2020 WX4 (Q=5.566 AU, arc=15 days, H=21.9 ~141m) from Steward Mt. Lemmon Sta. (Dec. 8.45-46p3)
- K20W02Y 2020 WY2 (arc=17 days, H=21.8 ~148m) from PS1 (Dec. 7.30-33p3)
- K20T04M 2020 TM4 (Q=4.140 AU, arc=56 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (Dec. 7.52-53p3) and PS2 (Dec. 7.54-57p3)
- K20T03P 2020 TP3 (arc=69 days, H=22.0 ~135m) from PS1 (Dec. 7.35-39p4)
- K16Y00M 2016 YM (arc=3 opp, H=22.0 ~135m) from Starry Wanderer Obs. (Dec. 8.00-01p3)
- K16T54R 2016 TR54 (arc=5 opp, H=22.0 ~135m) from MLS (Dec. 7.34-35p4)
- Observations of other objects
- K20W05V 2020 WV5 (arc=16 days, H=20.1 ~323m) from Steward Mt. Lemmon Sta. (Dec. 8.44p2)
- K20W05S 2020 WS5 (i=40.9°, Q=4.034 AU, arc=10 days, H=21.0 ~214m) from ATLAS Haleakala (Dec. 7.43-44p4)
- K20W05M 2020 WM5 (Q=5.351 AU, arc=9 days, H=21.1 ~204m) from Steward Mt. Lemmon Sta. (Dec. 7.53-54p4 & 8.37-38p3) and ATLAS Mauna Loa (Dec. 7.54-56p4)
- K20W05C 2020 WC5 (arc=13 days, H=20.1 ~323m) from Steward Mt. Lemmon Sta. (Dec. 8.35p4)
- K20W05A 2020 WA5 (arc=13 days, H=21.5 ~170m) from ATLAS Mauna Loa (Dec. 7.42-44p4) and Steward Mt. Lemmon Sta. (Dec. 8.30p4)
- K20W02H 2020 WH2 (Q=4.562 AU, arc=20 days, H=20.1 ~323m) from Spacewatch 0.9m (Dec. 8.38-40p3)
- K20V03N 2020 VN3 (arc=27 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (Dec. 7.54-55p4)
- K20V03M 2020 VM3 (arc=27 days, H=20.9 ~224m) from PS1 (Dec. 7.48-53p3)
- K20U06J 2020 UJ6 (arc=56 days, H=19.9 ~355m) from Steward Mt. Lemmon Sta. (Dec. 7.54p4)
- K20U02G 2020 UG2 (arc=51 days, H=21.6 ~162m) from PS1 (Dec. 7.29-31p3)
- K20T04G 2020 TG4 (Q=4.171 AU, arc=79 days, H=20.1 ~323m) from Bok Tel. (Dec. 7.41-42p3)
- K20Q05F 2020 QF5 (arc=115 days, H=21.6 ~162m) from MLS (Dec. 7.44-45p4)
- K20Q04M 2020 QM4 (arc=110 days, H=18.6 ~645m) from PS1 (Dec. 7.42-46p4)
- K20P05C 2020 PC5 (Q=4.177 AU, arc=115 days, H=18.5 ~676m) from CSS (Dec. 7.14-16p4)
- K20O08C 2020 OC8 (arc=175 days, H=20.8 ~234m) from PS2 (Dec. 7.30-34p4) and ATLAS Haleakala (Dec. 7.40-45p4)
- K20G03N 2020 GN3 (arc=261 days, H=19.1 ~513m) from MLS (Dec. 7.08-10p4 at G=21.30-22.29)
- K19B01O 2019 BO1 (arc=3 opp, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (Dec. 7.53p3 & 8.36-37p4)
- K18G04X 2018 GX4 (arc=4 opp, H=19.2 ~490m) from ATLAS Mauna Loa (Dec. 7.44-46p4)
- K17V12T 2017 VT12 (arc=4 opp, H=20.4 ~282m) from ATLAS Mauna Loa (Dec. 7.24-26p4)
- K17S19E 2017 SE19 (arc=3 opp, H=19.8 ~371m) from ATLAS Haleakala (Dec. 7.31-34p4)
- K17B05P 2017 BP5 (arc=3 opp, H=20.4 ~282m) from MLS (Dec. 7.48-50p4)
- K16F14Y 2016 FY14 (arc=2 opp, H=19.1 ~513m) from PS2 (Dec. 7.21-25p3)
- K16E85D 2016 ED85 (Q=5.062 AU, arc=3 opp, H=17.7 ~977m) from ATLAS Haleakala (Dec. 7.62-65p4)
- K16B14Z 2016 BZ14 (Q=4.757 AU, arc=2 opp, H=18.4 ~708m) from Spacewatch 0.9m (Dec. 7.52-54p3)
- K15XQ1J 2015 XJ261 (arc=4 opp, H=19.6 ~407m) from MLS (Dec. 7.53-55p3)
- K14QT6K 2014 QK296 (arc=5 opp, H=18.5 ~676m) from PS1 (Dec. 7.48-53p4)
- K14L26Q 2014 LQ26 (Q=5.150 AU, arc=2 opp, H=18.3 ~741m) from MLS (Dec. 7.38-39p4)
- K14A51F 2014 AF51 (arc=4 opp, H=20.4 ~282m) from Bok Tel. (Dec. 7.38-39p4 at G=22.2-23.6)
- K13U14X 2013 UX14 (arc=4 opp, H=18.3 ~741m) from ATLAS Mauna Loa (Dec. 7.38-40p4)
- K13P10F 2013 PF10 (arc=5 opp, H=20.2 ~309m) from NEOWISE (Dec. 5.66p1, 5.79p1, 6.05p1, 6.25p2 & 6.38p1)
- K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from ATLAS Haleakala (Dec. 7.40-45p4)
- K12S22A 2012 SA22 (arc=3 opp, H=18.1 ~812m) from ATLAS Mauna Loa (Dec. 7.40-42p4)
- K11Y62U 2011 YU62 (Q=4.766 AU, arc=4 opp, H=17.6 ~1.02 km) from PS1 (Dec. 7.30-31p2 at w=22.1-2)
- K11B59F 2011 BF59 (arc=3 opp, H=19.3 ~467m) from MLS (Dec. 7.06-07p3)
- K10MB1U 2010 MU111 (i=41.5°, arc=3 opp, H=18.5 ~676m) from PS1 (Dec. 7.61-64p4)
- K09S19T 2009 ST19 (arc=6 opp, H=18.3 ~741m) from Bok Tel. (Dec. 7.46-47p4)
- K09K08K 2009 KK8 (arc=3 opp, H=18.7 ~616m) from MLS (Dec. 7.13-15p4)
- K08CB8Z 2008 CZ118 (arc=4 opp, H=18.5 ~676m) from ATLAS Mauna Loa (Dec. 7.29-31p4)
- K05Q10S 2005 QS10 (arc=4 opp, H=18.8 ~589m) from NEOWISE (Dec. 4.16p2, 4.29p2, 4.42p2, 4.55p2 & 4.68p1)
- K04U01S 2004 US1 (arc=2 opp, H=20.6 ~257m) from PS1 (Dec. 7.29-32p4)
- K04Q17D 2004 QD17 (arc=5 opp, H=19.8 ~371m) from MLS (Dec. 7.13-15p4)
- K04L03U 2004 LU3 (arc=5 opp, H=18.4 ~708m) from MLS (Dec. 7.30-32p4), PS2 (Dec. 7.31-34p3), and ATLAS Haleakala (Dec. 7.40-45p4)
- K04A00C 2004 AC (arc=4 opp, H=18.9 ~562m) from ATLAS Mauna Loa (Dec. 7.46-49p4)
- K03Y00J 2003 YJ (arc=4 opp, H=20.3 ~295m) from CSS (Dec. 7.23-24p4)
- K03U03Q 2003 UQ3 (arc=3 opp, H=19.6 ~407m) from MLS (Dec. 7.11-12p4)
- K03B47K 2003 BK47 (Q=4.689 AU, arc=5 opp, H=17.8 ~933m) from CSS (Dec. 7.44-45p2)
- K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.7 ~616m) from ROASTERR-1 (Dec. 6.91-92p2), PS1 (Dec. 7.49-53p4), and ATLAS Mauna Loa (Dec. 7.50-51p4)
- K00P27Q 2000 PQ27 (arc=3 opp, H=20.0 ~339m) from PS1 (Dec. 7.44-47p3)
- J99V15X 1999 VX15 (Q=4.807 AU, arc=2 opp, H=18.8 ~589m) from ATLAS Haleakala (Dec. 7.44-47p4)
- J98W02A 1998 WA2 (Q=4.271 AU, arc=2 opp, H=19.9 ~355m) from MLS (Dec. 7.33-35p4)
- J93H00C 1993 HC (arc=2 opp, H=20.6 ~257m) from PS1 (Dec. 7.29-32p4)
- r0938 530938 2011 XE from CSS (Dec. 7.14-16p3)
- p4041 514041 2014 MQ18 from PS1 (Dec. 7.63-64p2)
- p0073 510073 2010 JF88 from MLS (Dec. 7.44-45p4)
- o5093 505093 2011 VQ5 from ATLAS Mauna Loa (Dec. 7.47-48p4)
- n7094 497094 2004 AH from ATLAS Haleakala (Dec. 7.50-53p4) and MLS (Dec. 7.50-53p4)
- m2505 482505 2012 TQ78 from ATLAS Mauna Loa (Dec. 7.47-49p4)
- l4554 474554 2003 YQ94 from ATLAS Haleakala (Dec. 7.24-26p4)
- k5749 465749 2009 WO6 from ATLAS Mauna Loa (Dec. 7.48-50p8) and Bok Tel. (Dec. 7.52-53p4)
- k4885 464885 2005 LS3 from PS1 (Dec. 7.34-36p3)
- k2041 462041 2007 DL8 from NEOWISE (Dec. 4.22p1, 4.48p1, 4.62p1, 4.75p2, 5.07p1, 5.14p1, 5.20p1, 5.40p1, 5.47p1, 5.53p1, 5.60p1, 5.66p1, 6.12p1, 6.25p1, 6.38p1, 6.51p1 & 6.64p1)
- j2307 452307 Manawydan (1997 XV11) from ATLAS Haleakala (Dec. 7.36-40p4)
- i9107 449107 2012 VJ82 from ATLAS Haleakala (Dec. 7.50-53p4)
- h8902 438902 2009 WF104 from CSS (Dec. 7.29-31p4)
- g8086 428086 2006 NM from ATLAS Mauna Loa (Dec. 7.33-37p4)
- f8797 418797 2008 VF from MLS (Dec. 7.15-17p4)
- f7217 417217 2005 YS from ATLAS Mauna Loa (Dec. 7.27-29p4 & 7.41-46p3)
- f6694 416694 2004 YR32 from CSS (Dec. 7.42-43p3)
- f5029 415029 2011 UL21 from ATLAS Mauna Loa (Dec. 7.44-46p3)
- f4586 414586 2009 UV18 from ATLAS Haleakala (Dec. 7.33-34p3)
- f3192 413192 2002 VY94 from the Zwicky Transient Facility (ZTF) (Dec. 5.55-57p4)
- f3002 413002 1999 VG22 from MLS (Dec. 7.11-12p4)
- c0929 380929 2006 HU30 from PS2 (Dec. 7.39-42p4) and PS1 (Dec. 7.42-46p4)
- c0359 380359 2002 TN30 from ATLAS Mauna Loa (Dec. 7.56-58p4)
- b3579 373579 2002 AW11 from MLS (Dec. 7.37-39p4)
- Z4663 354663 2005 LY19 from CSS (Dec. 7.50-51p3)
- V6695 316695 1996 TE9 from NEOWISE (Dec. 4.17p1 & 4.43p1)
- R5714 275714 2000 YH4 from CSS (Dec. 7.14-16p4)
- P6412 256412 2007 BT2 from MLS (Dec. 7.11-13p4)
- O1596 241596 1998 XM2 from ATLAS Haleakala (Dec. 7.43-46p4)
- L6707 216707 2004 XP164 from CSS (Dec. 7.38-40p4)
- J0208 190208 2006 AQ from NEOWISE (Dec. 5.76p1, 5.90p1, 6.03p1, 6.29p1, 6.42p1, 6.55p1, 6.68p1, 6.75p1, 6.81p1, 6.88p1, 6.94p1, 7.01p1 & 7.07p1)
- I9040 189040 2000 MU1 from MLS (Dec. 7.50-53p4)
- I8452 188452 2004 HE62 from ZTF (Dec. 5.07-08p2 & 6.08-09p2)
- I6822 186822 2004 FE31 from CSS (Dec. 7.16-18p4)
- G3902 163902 2003 SW222 from ATLAS Mauna Loa (Dec. 7.34-41p8)
- G3014 163014 2001 UA5 from ATLAS Haleakala (Dec. 7.25-27p4)
- G2186 162186 1999 OP3 from Oukaimeden Obs. (Dec. 8.20-22p4)
- G2173 162173 Ryugu (1999 JU3) from Southern Utsunomiya (Dec. 6.35-38p7 & 7.36-39p8) and ATLAS Haleakala (Dec. 7.25-27p4)
- F9856 159856 2004 JW6 from MLS (Dec. 7.30-32p4)
- F9402 159402 1999 AP10 from ATLAS Mauna Loa (Dec. 7.53-54p4) and program code 1 via Kuban State Univ. Obs. (Dec. 7.82-94p23)
- F3201 153201 2000 WO107 from Althuraya Astronomy Ctr. (Dec. 6.74-79p17)
- F2931 152931 2000 EA107 from ZTF (Dec. 5.55-57p4)
- F2756 152756 1999 JV3 from MLS (Dec. 7.46-47p3)
- E5656 145656 4788 P-L from MLS (Dec. 7.15-17p4)
- E3649 143649 2003 QQ47 from ZTF (Dec. 5.55-57p4)
- D8095 138095 2000 DK79 from CSS (Dec. 7.08-09p4)
- D7062 137062 1998 WM from ZTF (Dec. 6.55-56p4)
- D7052 137052 Tjelvar (1998 VO33) from ZTF (Dec. 5.55-57p4)
- 99935 99935 2002 AV4 from Oukaimeden Obs. (Dec. 8.24-26p4)
- 99907 99907 1989 VA from MLS (Dec. 7.08-10p4) and ATLAS Haleakala (Dec. 7.25-27p4)
- 90075 90075 2002 VU94 from MLS (Dec. 7.06-08p4) and ATLAS Haleakala (Dec. 7.23-25p4)
- 89355 89355 2001 VS78 from CSS (Dec. 7.27-28p4)
- 88188 88188 2000 XH44 from ATLAS Mauna Loa (Dec. 7.46-48p6)
- 86450 86450 2000 CK33 from G. Gasparovic via Slooh.com Chile Obs. (Dec. 7.26-28p3)
- 85709 85709 1998 SG36 from ATLAS Haleakala (Dec. 7.63-66p4)
- 85275 85275 1994 LY from CSS (Dec. 7.20-22p3)
- 68359 68359 2001 OZ13 from ATLAS Haleakala (Dec. 7.32-36p4)
- 66272 66272 1999 JW6 from ATLAS Mauna Loa (Dec. 7.33-35p4)
- 65717 65717 1993 BX3 from CSS (Dec. 7.18-20p4) and ATLAS Haleakala (Dec. 7.38-40p4)
- 55532 55532 2001 WG2 from MLS (Dec. 7.34-35p4) and ATLAS Haleakala (Dec. 7.41-45p4)
- 53435 53435 1999 VM40 from ATLAS Mauna Loa (Dec. 7.50-51p4)
- 35107 35107 1991 VH from CSS (Dec. 7.06-07p4)
- 31669 31669 1999 JT6 from ZTF (Dec. 5.55-57p4)
- 30825 30825 1990 TG1 from ATLAS Haleakala (Dec. 7.21-23p4)
- 24445 24445 2000 PM8 from ZTF (Dec. 5.55-57p4)
- 23183 23183 2000 OY21 from ATLAS Haleakala (Dec. 7.62-65p4)
- 21374 21374 1997 WS22 from ATLAS Mauna Loa (Dec. 7.50-51p4) and PS2 (Dec. 7.54-56p3)
- 19356 19356 1997 GH3 from ZTF (Dec. 5.55-57p5)
- 10150 10150 1994 PN from ATLAS Haleakala (Dec. 7.51-54p4)
- 10115 10115 1992 SK from PS1 (Dec. 7.42-46p4)
- 09172 9172 Abhramu (1989 OB) from MLS (Dec. 7.06-07p4) and ATLAS Haleakala (Dec. 7.22-24p4)
- 09058 9058 1992 JB from MLS (Dec. 7.19-21p4) and ATLAS Haleakala (Dec. 7.31-33p4)
- 08567 8567 1996 HW1 from ATLAS Haleakala (Dec. 7.50-53p4)
- 08507 8507 1991 CB1 from PS2 (Dec. 7.49-53p4)
- 08014 8014 1990 MF from SATINO-1 (July 7.86p6)
- 07350 7350 1993 VA from ZTF (Dec. 5.55-57p5)
- 06455 6455 1992 HE from PS1 (Dec. 7.54-58p4)
- 05863 5863 Tara (1983 RB) from MLS (Dec. 7.39-41p4)
- 05836 5836 1993 MF from Bok Tel. (Dec. 7.37-39p4)
- 05645 5645 1990 SP from ATLAS Haleakala (Dec. 7.63-66p8)
- 05587 5587 1990 SB from MLS (Dec. 7.31-32p4), PS2 (Dec. 7.31-34p4), and ATLAS Haleakala (Dec. 7.34-36p4)
- 04953 4953 1990 MU from CSS (Dec. 7.12-13p4)
- 04947 4947 Ninkasi (1988 TJ1) from ATLAS Haleakala (Dec. 7.25-28p4)
- 04055 4055 Magellan (1985 DO2) from CSS (Dec. 7.20-22p4)
- 03908 3908 Nyx (1980 PA) from ATLAS Haleakala (Dec. 7.24-26p4)
- 03691 3691 Bede (1982 FT) from MLS (Dec. 7.06-08p4) and ATLAS Haleakala (Dec. 7.23-25p4)
- 03552 3552 Don Quixote (1983 SA) from PS1 (Dec. 7.48-53p4)
- 03288 3288 Seleucus (1982 DV) from MLS (Dec. 7.06-08p4)
- 03199 3199 Nefertiti (1982 RA) from CSS (Dec. 7.50-51p3)
- 02329 2329 Orthos (1976 WA) from ZTF (Dec. 5.55-57p4)
- 01981 1981 Midas (1973 EA) from ATLAS Haleakala (Dec. 7.21-23p4)
- 01943 1943 Anteros (1973 EC) from ATLAS Haleakala (Dec. 7.58-61p4)
- 01685 1685 Toro (1948 OA) from CSS (Dec. 7.50-52p4) and ATLAS Haleakala (Dec. 7.59-61p4)
- 01036 1036 Ganymed (1924 TD) from ATLAS Haleakala (Dec. 7.48-50p4)
- 00433 433 Eros (1898 DQ) from ATLAS Haleakala (Dec. 7.64-66p4)
MPEC 2020-X68 - "07:27 UT" - 2020 XT1
- K20X01T 2020 XT1 (small asteroid, H=24.9 ~35m) was picked up at 0859 UT on 6 Dec. by Bok Tel., observing it at Dec. 6.37-39p4. This detection was confirmed by Spacewatch 1.8m (Dec. 6.46-48p2 & 7.38-40p3 at R=22.0-22.1) and CSS-Kuiper (Dec. 7.12-14p4 & 8.23-24p2).
MPEC 2020-X67 - "07:26 UT" - 2020 XS1
- K20X01S 2020 XS1 (small asteroid, H=23.80 ~59m) was picked up at 0801 UT on 6 Dec. by Bok Tel., observing it at Dec. 6.33-35p4. This detection was confirmed by Spacewatch 1.8m (Dec. 6.44-45p3 at R=21.5-8 & 7.41-43p3 at R=21.8-22.3) and CSS-Kuiper (Dec. 7.23-24p4 at G=21.18-60 & 8.29-30p4 at G=20.73-22.19).
MPEC 2020-X66 - "07:25 UT" - 2020 XR1
- K20X01R 2020 XR1 (small asteroid, H=23.77 ~60m) was picked up at 0801 UT on 6 Dec. by MLS, observing it at Dec. 6.33-36p4 and 8.25p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 6.39p4 & 7.09p4).
MPEC 2020-X65 - "07:23 UT" - 2020 XQ1
- K20X01Q 2020 XQ1 (Earth MOID=5.5 LD, H=25.8 ~23m) was picked up at 0842 UT on 6 Dec. by MLS, observing it at Dec. 6.36-38p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 6.43-44p4, 7.12p4 & 8.20p4).
MPEC 2020-X64 - "07:21 UT" - 2020 XP1
- K20X01P 2020 XP1 (small asteroid, H=24.38 ~45m) was picked up at 1006 UT on 6 Dec. by MLS, observing it at Dec. 6.42-44p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 6.46p4, 7.13-14p4 & 8.25-26p4).
MPEC 2020-X63 - "07:00 UT" - 2020 XO1
- K20X01O 2020 XO1 (small asteroid, Earth MOID=1.1 LD, H=23.69 ~62m) was picked up at 0603 UT on 6 Dec. by MLS, observing it at Dec. 6.25-27p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 6.33p4, 7.06-07p4 & 8.10-11p3), Tebbutt Obs. (Dec. 7.09-10p3 & 8.10-12p4), and Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Dec. 8.10-11p4).
MPEC 2020-X62 - "06:57 UT" - 2020 XN1
- K20X01N 2020 XN1 (i=36.5°, H=19.94 ~348m) was picked up at 1043 UT on 6 Dec. by MLS, observing it at Nov. 18.42-43p3 and Dec. 6.45-46p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 6.48-49p3, 7.25-26p4 & 8.20-21p4).
MPEC 2020-X61 - "06:37 UT" - 2012 XA
- K12X00A 2012 XA (H=24.84 ~36m, NHATS) from MLS (Nov. 13.19-21p4 at G=21.41-22.36), PS1 (Dec. 6.33-36p4), Steward Mt. Lemmon Sta. (Dec. 7.08p4 & 8.12p4), Holmes/CTIO (Dec. 8.09-11p3), Spacewatch 0.9m (Dec. 8.11-12p3), and Tebbutt Obs. (Dec. 8.14-15p3)
MPEC 2020-X60 - "02:33 UT" - 2020 WW5
- K20W05W 2020 WW5 (Earth MOID=5.1 LD, H=28.6 ~6m, NHATS target) was picked up at 0934 UT on 20 Nov. by PS1, observing it at Nov. 20.40-43p3. This detection was confirmed by MLS (Dec. 6.31-33p4), Steward Mt. Lemmon Sta. (Dec. 6.37-38p3 & 7.10-11p4), Holmes/CTIO (Dec. 7.17-18p3), and Farra d'Isonzo Obs. (Dec. 7.96-99p3).
MPEC 2020-X59 - "02:28 UT" - 2020 XM1
- K20X01M 2020 XM1 (H=21.5 ~170m) was picked up at 0258 UT on 6 Dec. by MLS, observing it at Dec. 6.12-14p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 6.21p4), PS2 (Dec. 6.21-25p4), Spacewatch 0.9m (Dec. 6.22-23p2), and CSS-Kuiper (Dec. 7.07p2 & 8.06p3).
MPEC 2020-X58 - "00:44 UT" - 2020 XL1
- K20X01L 2020 XL1 (Earth MOID=1.4 LD, H=28.4 ~7m, NHATS target) was picked up at 0520 UT on 5 Dec. by ZTF, observing it at Dec. 5.22p2, 5.30p2, and 5.48p2. This detection was confirmed by Moriyama Obs. (Dec. 5.55-56p3) and Galilei Obs. (Dec. 6.03-04p2).
Observers on 8 December '20
A total of 30 observers appear in today's MPECs.
Code | Observer / observatory |
---|---|
M46 | Althuraya Astronomy Ctr., 1 in MPEC 2020-X69 -- 153201 |
T05 | ATLAS Haleakala in Hawaii, 42 in MPEC 2020-X69 -- 2020 XN, 2020 WS5, 2020 WK3, 2020 SO, 2020 OC8, 2017 SE19, 2016 ED85, 2013 PY6, 2004 LU3, 1999 VX15, 99907, 90075, 85709, 68359, 65717, 55532, 497094, 474554, 452307, 449107, 414586, 30825, 241596, 23183, 163693, 163014, 162173, 10150, 9172, 9058, 8567, 5645, 5587, 4947, 4179, 3908, 3691, 1981, 1943, 1685, 1036, 433 |
T08 | ATLAS Mauna Loa in Hawaii, 25 in MPEC 2020-X69 -- 2020 XF, 2020 WM5, 2020 WA5, 2020 SO, 2018 GX4, 2017 VT12, 2013 UX14, 2012 SA22, 2008 CZ118, 2004 AC, 2002 GZ8, 88188, 66272, 53435, 505093, 501647, 482505, 465749, 428086, 417217, 415029, 380359, 21374, 163902, 159402 |
V00 | Bok Telescope in Arizona, 9 in MPECs 2020-X67, 2020-X68 & 2020-X69 -- 2020 XT1, 2020 XS1, 2020 WQ3, 2020 TG4, 2020 FT1, 2014 AF51, 2009 ST19, 465749, 5836 |
703 | Catalina Sky Survey (CSS) in Arizona, 20 in MPEC 2020-X69 -- 2020 PC5, 2003 YJ, 2003 BK47, 89355, 85275, 65717, 530938, 438902, 416694, 354663, 35107, 275714, 216707, 186822, 138095, 4953, 4179, 4055, 3199, 1685 |
V06 | Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 4 in MPECs 2020-X59, 2020-X67, 2020-X68 & 2020-X69 -- 2020 XT1, 2020 XS1, 2020 XM1, 2020 QD5 |
807| | Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2020-X60, 2020-X61 & 2020-X63 -- 2020 XO1, 2020 WW5, 2012 XA |
595 | Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-X60 -- 2020 WW5 |
X31 | Galilei Obs., 1 in MPEC 2020-X58 -- 2020 XL1 |
253 | Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 153201 |
P93 | JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-X69 -- 2020 XH1 |
C401 | program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-X69 -- 159402 |
900 | Moriyama Obs. in Japan, 1 in MPEC 2020-X58 -- 2020 XL1 |
V01 | Mountainville Obs. in Utah, 1 in MPEC 2020-X69 -- 2020 XV |
G96 | Mt. Lemmon Survey (MLS) in Arizona, 43 in MPECs 2020-X59, 2020-X60, 2020-X61, 2020-X62, 2020-X63, 2020-X64, 2020-X65, 2020-X66, 2020-X69 & 2020-X70 -- 2020 XU1, 2020 XR1, 2020 XQ1, 2020 XP1, 2020 XO1, 2020 XN1, 2020 XM1, 2020 XH1, 2020 WW5, 2020 WK3, 2020 WE3, 2020 QF5, 2020 GN3, 2017 BP5, 2016 TR54, 2015 XJ261, 2014 LQ26, 2012 XA, 2011 BF59, 2009 KK8, 2004 QD17, 2004 LU3, 2003 UQ3, 1998 WA2, 99907, 90075, 55532, 510073, 497094, 418797, 413002, 373579, 256412, 189040, 159856, 152756, 145656, 9172, 9058, 5863, 5587, 3691, 3288 |
C51 | NEOWISE in Earth polar orbit, 5 in MPEC 2020-X69 -- 2013 PF10, 2005 QS10, 462041, 316695, 190208 |
J43 | Oukaimeden Obs. in Morocco, 2 in MPEC 2020-X69 -- 99935, 162186 |
F51 | Pan-STARRS 1 (PS1) in Hawaii, 26 in MPECs 2020-X60, 2020-X61 & 2020-X69 -- 2020 WY2, 2020 WW5, 2020 WG, 2020 WD1, 2020 VM6, 2020 VM3, 2020 UV3, 2020 UG2, 2020 TP3, 2020 QM4, 2020 OK5, 2014 QK296, 2012 XA, 2011 YU62, 2010 MU111, 2004 US1, 2002 GZ8, 2000 PQ27, 1993 HC, 514041, 464885, 380929, 11398, 10115, 6455, 3552 |
F52 | Pan-STARRS 2 (PS2) in Hawaii, 12 in MPECs 2020-X59 & 2020-X69 -- 2020 XM1, 2020 WZ4, 2020 WG, 2020 VX1, 2020 TM4, 2020 OC8, 2016 FY14, 2004 LU3, 380929, 21374, 8507, 5587 |
L04 | ROASTERR-1 in Romania, 2 in MPEC 2020-X69 -- 2020 XH, 2002 GZ8 |
C95 | SATINO-1 in France, 1 in MPEC 2020-X69 -- 8014 |
W884 | G. Gasparovic in Croatia via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-X69 -- 86450 |
Q21 | Southern Utsunomiya in Japan, 1 in MPEC 2020-X69 -- 162173 |
691 | Spacewatch 0.9m telescope in Arizona, 8 in MPECs 2020-X59, 2020-X61 & 2020-X69 -- 2020 XM1, 2020 XE, 2020 WH2, 2020 WG5, 2016 BZ14, 2012 XA, 2012 UK171, 2010 WT8 |
291 | Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2020-X67, 2020-X68 & 2020-X69 -- 2020 XT1, 2020 XS1, 2020 WZ3, 2020 PP, 2013 FK |
C36 | Starry Wanderer Obs. in Belarus, 1 in MPEC 2020-X69 -- 2016 YM |
I52 | Steward Obs. Mt. Lemmon Station in Arizona, 36 in MPECs 2020-X59, 2020-X60, 2020-X61, 2020-X62, 2020-X63, 2020-X64, 2020-X65, 2020-X66, 2020-X69 & 2020-X70 -- 2020 XY, 2020 XV, 2020 XU1, 2020 XR1, 2020 XR, 2020 XQ1, 2020 XP1, 2020 XO1, 2020 XO, 2020 XN1, 2020 XM1, 2020 XJ, 2020 XH, 2020 XF, 2020 XE1, 2020 XC, 2020 WX4, 2020 WW5, 2020 WV5, 2020 WV4, 2020 WN4, 2020 WM5, 2020 WK3, 2020 WE3, 2020 WC5, 2020 WA5, 2020 VU4, 2020 VQ3, 2020 VN3, 2020 UJ6, 2020 TQ7, 2020 TM4, 2020 TJ8, 2020 SO, 2019 BO1, 2012 XA |
858 | Tebbutt Obs. in New Mexico, 2 in MPECs 2020-X61 & 2020-X63 -- 2020 XO1, 2012 XA |
T12 | UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-X69 -- 2010 FE7 |
I41 | Zwicky Transient Facility (ZTF) in southern California, 12 in MPECs 2020-X58 & 2020-X69 -- 2020 XL1, 413192, 31669, 24445, 19356, 188452, 152931, 143649, 137062, 137052, 7350, 2329 |
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. |
Impact Risk Monitoring on 8 December '20
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 XK1 | NEODyS | 1800 | 2077-2111 | 2 | 1.39e-09 | -11.82 | -11.84 | 0 | NEODyS: "Based on 21 optical observations (of which 3 are rejected as outliers) from 2020-12-07.110 to 2020-12-07.371." |
JPL Sentry | 0600 | 2039-2039 | 1 | 1.662e-09 | -11.23 | -11.23 | 0 | JPL: Computed at 17:02 Dec. 7th Pacific time based on 19 observations spanning .25635 days (2020-Dec-07.113998 to 2020-Dec-07.37035). Diameter approximately 0.003 km. from weighted mean H=30.62. | |
2020 XR | NEODyS | 1800 | 2028 | 2 | 4.0e-05 | -1.06 | -1.06 | 1 | NEODyS: "Based on 43 optical observations (of which 1 are rejected as outliers) from 2020-12-04.213 to 2020-12-08.066." |
JPL Sentry | 1730 | 2028-2103 | 6 | 1.28352776e-05 | -1.54 | -1.55 | 1 | JPL: Computed at 06:18 today Pacific time based on 42 observations spanning 3.8530 days (2020-Dec-04.212236 to 2020-Dec-08.065211). Diameter approximately 0.390 km. from weighted mean H=19.69. | |
2020 XF | JPL Sentry | 1700 | 2056-2118 | 137 | 0.00035706389 | -4.54 | -5.09 | 0 | JPL: Computed at 06:25 today Pacific time based on 54 observations spanning 3.7674 days (2020-Dec-04.32683 to 2020-Dec-08.094228). Diameter approximately 0.016 km. from weighted mean H=26.67. |
2020 XE | NEODyS | 1800 | 2040-2075 | 4 | 1.08e-05 | -4.80 | -4.8 | 0 | NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2020-12-04.398 to 2020-12-08.263." |
JPL Sentry | 1700 | 2040-2044 | 3 | 5.8709281e-06 | -5.07 | -5.07 | 0 | JPL: Computed at 06:02 today Pacific time based on 44 observations spanning 3.8648 days (2020-Dec-04.397182 to 2020-Dec-08.26198). Diameter approximately 0.020 km. from weighted mean H=26.20. | |
2020 XC | NEODyS | 1800 | 2085-2117 | 3 | 6.01e-07 | -8.50 | -8.51 | 0 | NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2020-12-03.363 to 2020-12-08.326." |
JPL Sentry | 1700 | 2085-2085 | 1 | 5.951e-07 | -8.48 | -8.48 | 0 | JPL: Computed at 06:28 today Pacific time based on 47 observations spanning 4.9633 days (2020-Dec-03.36221 to 2020-Dec-08.32553). Diameter approximately 0.005 km. from weighted mean H=28.99. | |
2020 WG5 | NEODyS | 1800 | 2086-2120 | 34 | 1.9e-04 | -5.36 | -5.44 | n/a | NEODyS: "Based on 52 optical observations (of which 2 are rejected as outliers) from 2020-11-27.253 to 2020-12-08.305." |
JPL Sentry | 1700 | 2086-2120 | 16 | 0.000177286726 | -5.40 | -5.49 | 0 | JPL: Computed at 06:09 today Pacific time based on 50 observations spanning 11.052 days (2020-Nov-27.251726 to 2020-Dec-08.30394). Diameter approximately 0.010 km. from weighted mean H=27.74. | |
2020 WZ3 | NEODyS | 1800 | 2089-2120 | 15 | 8.29e-06 | -6.05 | -6.37 | n/a | NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2020-11-23.353 to 2020-12-08.248." |
JPL Sentry | 1700 | 2088-2119 | 14 | 1.455128e-05 | -5.81 | -6.30 | 0 | JPL: Computed at 06:08 today Pacific time based on 44 observations spanning 14.895 days (2020-Nov-23.352624 to 2020-Dec-08.2476). Diameter approximately 0.020 km. from weighted mean H=26.19. | |
2018 XW3 | JPL Sentry | 0600 | 2044-2044 | 1 | 4.467e-09 | -8.66 | -8.66 | 0 | JPL: Computed at 09:48 April 18th of 2019 Pacific time based on 27 observations spanning 21.160 days (2018-Dec-13.2296 to 2019-Jan-03.389707). Diameter approximately 0.018 km. from weighted mean H=26.34. |
2010 FE7 | NEODyS | 1800 | 2107 | 1 | 5.39e-11 | -10.02 | -10.02 | 0 | NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2010-02-14.263 to 2010-04-09.276." |
2008 XK | JPL Sentry | 0600 | 2020-2101 | 87 | 4.064918e-07 | -6.65 | -6.82 | 0 | JPL: Computed at 09:53 Dec. 18th of 2019 Pacific time based on 12 observations spanning .08663 days (2008-Dec-02.28019 to 2008-Dec-02.36682). Diameter approximately 0.012 km. from weighted mean H=27.23. |
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 8 December '20
Times are UTC for when items were noted or added by The Tracking News.
1800 | Noted that NEODyS has posted 2010 FE7 as an impact risk - see above Noted that NEODyS has updated its 2020 WG5 risk assessment - see above Noted that NEODyS has updated its 2020 WZ3 risk assessment - see above Noted that NEODyS has updated its 2020 XC risk assessment - see above Noted that NEODyS has updated its 2020 XE risk assessment - see above Noted that NEODyS has posted 2020 XK1 as an impact risk - see above Noted that NEODyS has updated its 2020 XR risk assessment - see above |
1730 | Noted that JPL Sentry has updated its 2020 XR risk assessment - see above |
1700 | Noted that JPL Sentry has updated its 2020 WG5 risk assessment - see above Noted that JPL Sentry has updated its 2020 WZ3 risk assessment - see above Noted that JPL Sentry has updated its 2020 XC 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 Grabbed MPEC 2020-X69 - Daily Orbit Update - see above Grabbed MPEC 2020-X70 - 2020 XU1 - see above |
0745 | Grabbed MPEC 2020-X61 - 2012 XA - see above Grabbed MPEC 2020-X62 - 2020 XN1 - see above Grabbed MPEC 2020-X63 - 2020 XO1 - see above Grabbed MPEC 2020-X64 - 2020 XP1 - see above Grabbed MPEC 2020-X65 - 2020 XQ1 - see above Grabbed MPEC 2020-X66 - 2020 XR1 - see above Grabbed MPEC 2020-X67 - 2020 XS1 - see above Grabbed MPEC 2020-X68 - 2020 XT1 - see above Noted Radar Astrometry database update - see above |
0600 | Noted that JPL Sentry has updated its 2008 XK risk assessment - see above Noted that JPL Sentry has updated its 2018 XW3 risk assessment - see above Noted that JPL Sentry has posted 2020 XK1 as an impact risk - see above Grabbed MPEC 2020-X58 - 2020 XL1 - see above Grabbed MPEC 2020-X59 - 2020 XM1 - see above Grabbed MPEC 2020-X60 - 2020 WW5 - see above |