2020-12-05 Tracking News

Contents on 5 December '20

IAU Minor Planet Center
- NEOCP Activity -- 32 listings
- New MPECs -- nine MPECs
Observers -- 38 observers
Impact Risk Monitoring -- nine objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1228 risk-listed objects, 179 have had news in the last 31 days. Updated at 2201 UTC on 5 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 5 December '20

The MPC's NEO Confirmation Page has 32 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 32 objects listed. Of these, 22 were "one nighters." So far The Tracking News has counted a total of 44 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 5 December '20

Minor Planet Electronic Circulars

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

MPEC 2020-X14 time-stamped "02:55 UT" - 2020 XC - see below
MPEC 2020-X15 time-stamped "12:13 UT" - Daily Orbit Update - see below
MPEC 2020-X16 time-stamped "19:51 UT" - 2020 XD - see below
MPEC 2020-X17 time-stamped "19:53 UT" - 2020 XE - see below
MPEC 2020-X18 time-stamped "22:08 UT" - 2020 XF - see below
MPEC 2020-X19 time-stamped "22:12 UT" - 2020 VC7 - see below
MPEC 2020-X20 time-stamped "22:13 UT" - 2020 XG - see below
MPEC 2020-X21 time-stamped "23:05 UT" - Erroneous MPECs 2020-X01 and 2020-X02 - see below
MPEC 2020-X22 time-stamped "23:14 UT" - 2020 XH

MPEC 2020-X22 - "23:14 UT" - 2020 XH

K20X00H 2020 XH (small asteroid, Earth MOID=5.8 LD, H=24.6 ~41m) was picked up at 0835 UT on 4 Dec. by the Catalina Sky Survey (CSS), observing it at Dec. 4.36-37p3. This detection was confirmed by the Zwicky Transient Facility (ZTF) (Dec. 4.35-40p8), Steward Obs. Mt. Lemmon Station (Dec. 4.39-40p4, 4.45p4 & 5.19p4), Wiggins Obs. (Dec. 4.40-41p8), Arcadia Obs. (Dec. 4.55-56p7), Xingming Obs. #3 (Dec. 4.71p5), Paus Obs. (Dec. 4.97-98p3), Astronomical Research Obs. Westfield (Dec. 5.16p5), Moriyama Obs. (Dec. 5.52p3), and Glenlee Obs. (Dec. 5.72p6).

MPEC 2020-X21 - "23:05 UT" - Erroneous MPECs 2020-X01 and 2020-X02

MPEC 2020-X20 - "22:13 UT" - 2020 XG

K20X00G 2020 XG (risk listed, Earth MOID=0.9 LD, H=28.0 ~9m) was picked up at 0805 UT on 4 Dec. by the Mt. Lemmon Survey (MLS), observing it at Dec. 4.34-35p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 4.44p2 & 5.10-11p4), ARO Westfield (Dec. 5.10-11p3), and the Spacewatch 0.9m telescope (Dec. 5.41-42p2).

MPEC 2020-X19 - "22:12 UT" - 2020 VC7

K20V07C 2020 VC7 (small asteroid, H=23.6 ~65m) was picked up at 0507 UT on 5 Nov. by Pan-STARRS 1 (PS1), observing it at Nov. 5.21-25p4 and 16.25-28p3. This detection was confirmed by CSS (Dec. 3.19-21p2 & 5.17-18p4), MLS (Dec. 5.21-22p4), Mountainville Obs. (Dec. 5.23-30p3), Steward Mt. Lemmon Sta. (Dec. 5.27p4), Spacewatch 0.9m (Dec. 5.27-29p3), and Great Shefford Obs. (Dec. 5.80p4).

MPEC 2020-X18 - "22:08 UT" - 2020 XF

K20X00F 2020 XF (risk listed, Earth MOID=0.3 LD, H=26.7 ~15m) was picked up at 0436 UT on 5 Dec. by CSS, observing it at Dec. 5.19-21p3. This detection was confirmed by PS1 (Dec. 4.33-34p2), Pan-STARRS 2 (PS2) (Dec. 4.35-38p3), Steward Mt. Lemmon Sta. (Dec. 5.29p4), Moriyama Obs. (Dec. 5.45-46p3), Wiggins Obs. (Dec. 5.46-47p7), Great Shefford Obs. (Dec. 5.76-77p4), Rokycany Obs. (Dec. 5.79p2), and Northolt Branch Obs. (Dec. 5.80-81p2).

MPEC 2020-X17 - "19:53 UT" - 2020 XE

K20X00E 2020 XE (risk listed, Q=4.521 AU, Earth MOID=0.2 LD, H=26.0 ~21m, close passer) was picked up at 0931 UT on 4 Dec. by MLS, observing it at Dec. 4.40-41p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Dec. 4.47-49p6 & 5.12-13p3), PS2 (Dec. 4.49-52p3), Paus Obs. (Dec. 4.89-90p3), Mountainville Obs. (Dec. 5.12-19p3), ARO Westfield (Dec. 5.14p2), the Spacewatch 1.8m telescope (Dec. 5.17p3), and Golden Ears Obs. (Dec. 5.28-30p3).

MPEC 2020-X16 - "19:51 UT" - 2020 XD

K20X00D 2020 XD (small asteroid, Earth MOID=8.9 LD, H=25.7 ~25m) was picked up at 1101 UT on 4 Dec. by MLS, observing it at Nov. 17.29-30p2 and Dec. 4.46-48p4. This detection was confirmed by PS1 (Nov. 8.37p1 at G=23.34 & 14.44p1 at G=22.34), PS2 (Nov. 14.40p1, 20.38-42p2 & Dec. 4.50-52p3), Steward Mt. Lemmon Sta. (Dec. 4.49-50p2 & 5.17p4), Xingming Obs. #3 (Dec. 4.71p5), Paus Obs. (Dec. 4.86-87p3), ARO Westfield (Dec. 5.15p3), Golden Ears Obs. (Dec. 5.16-17p2), Mountainville Obs. (Dec. 5.20-24p2), and Spacewatch 0.9m (Dec. 5.37-40p3).

<< DOU on 5 December '20 >> MPEC 2020-X15 - "12:13 UT" - Daily Orbit Update

Observations of risk-listed objects
K20X00C 2020 XC (small asteroid, arc=2 days, H=29.0 ~5m, close passer) from Golden Ears Obs. (Dec. 5.11-12p3)
K20W05G 2020 WG5 (small asteroid, arc=8 days, H=27.7 ~10m, close passer, NHATS target) from Spacewatch 1.8m (Dec. 5.27-28p2)
K20W05F 2020 WF5 (small asteroid, arc=8 days, H=27.8 ~9m, close passer, NHATS target) from Spacewatch 1.8m (Dec. 5.42-44p2 at R=21.6-22.2)
K20W04T 2020 WT4 (small asteroid, arc=11 days, H=27.7 ~10m, NHATS target) from Spacewatch 1.8m (Dec. 5.06-12p3 at R=22.4-8)
K20W03Z 2020 WZ3 (small asteroid, arc=12 days, H=26.1 ~20m, NHATS target) from the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Dec. 5.33p3)
99942 99942 Apophis (2004 MN4) (NHATS target) from program code 8 via Simeis Obs. (Dec. 4.14-16p7)
Observations of recently (no longer) risk-listed objects
K20W05L 2020 WL5 (Q=4.035 AU, arc=7 days, H=21.3 ~186m) from Steward Mt. Lemmon Sta. (Dec. 5.07p3)
K20V03X 2020 VX3 (Q=4.481 AU, arc=25 days, H=21.5 ~170m) from CSS-Kuiper (Dec. 5.21-22p4)
K19X00S 2019 XS (small asteroid, arc=5 opp, H=23.7 ~62m, NHATS target) from MLS (Dec. 4.23-25p4)
Observations of close-passing objects
K20W04Z 2020 WZ4 (arc=18 days, H=24.4 ~45m) from Steward Mt. Lemmon Sta. (Dec. 5.11-12p3)
K20W02B 2020 WB2 (Q=4.690 AU, arc=16 days, H=23.5 ~68m) from Steward Mt. Lemmon Sta. (Dec. 5.19-20p4)
K20T12B 2020 TB12 (arc=51 days, H=21.6 ~162m) from Spacewatch 0.9m (Dec. 5.17-20p3) and Steward Mt. Lemmon Sta. (Dec. 5.19-20p4)
K17W16J 2017 WJ16 (Q=0.999 AU, arc=2 opp, H=24.5 ~43m, NHATS target) from MLS (Dec. 4.12-14p4)
Observation campaigns (NHATS targets, radar support)
K20W03K 2020 WK3 (arc=13 days, H=25.1 ~32m, NHATS) from Paus Obs. (Dec. 4.99p2) and Steward Mt. Lemmon Sta. (Dec. 5.14p4)
K20W03F 2020 WF3 (arc=14 days, H=23.7 ~62m, NHATS) from Steward Mt. Lemmon Sta. (Dec. 5.15p4) and Spacewatch 0.9m (Dec. 5.42-46p3)
K20W00Y 2020 WY (arc=19 days, H=26.2 ~19m, NHATS) from program code "," (21) via Faulkes Telescope South (Dec. 4.44p3) and Spacewatch 1.8m (Dec. 5.36-39p3)
K20V05X 2020 VX5 (arc=22 days, H=23.4 ~71m, NHATS) from Spacewatch 0.9m (Dec. 5.29-32p3)
K20V02Z 2020 VZ2 (arc=24 days, H=24.9 ~35m, NHATS) from CSS-Kuiper (Dec. 5.15-16p4 at G=21.16-22.29)
K20U07F 2020 UF7 (arc=77 days, H=24.7 ~39m, NHATS) from Spacewatch 0.9m (Dec. 5.17-20p3)
K20U02S 2020 US2 (arc=47 days, H=23.7 ~62m, NHATS) from CSS-Kuiper (Dec. 5.31-32p4 at G=21.65-22.02)
K20T08J 2020 TJ8 (arc=52 days, H=25.1 ~32m, NHATS) from Steward Mt. Lemmon Sta. (Dec. 5.28p4)
K20S00O 2020 SO (NHATS) from Loiano Obs. (Oct. 18.94-96p6), ATLAS Mauna Loa (Dec. 4.27-30p4), Steward Mt. Lemmon Sta. (Dec. 5.06-07p4), and Spacewatch 0.9m (Dec. 5.14-16p3)
K20P01X 2020 PX1 (arc=117 days, H=23.6 ~65m, NHATS) from Steward Mt. Lemmon Sta. (Dec. 5.26p4)
K13Y02S 2013 YS2 (arc=2 opp, H=23.4 ~71m, NHATS) from MLS (Dec. 4.38-39p4)
11398 11398 1998 YP11 (radar) from ZTF (Dec. 2.11p1, 2.17p1, 2.38p1, 4.25p1 & 4.29p1)
04179 4179 Toutatis (1989 AC) (radar) from CSS (Dec. 4.08-09p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20W05T 2020 WT5 (arc=3 days, H=22.3 ~117m) from NEOWISE (Nov. 30.95p1)
K20W04V 2020 WV4 (arc=12 days, H=24.3 ~47m) from CSS-Kuiper (Dec. 5.28p4) and Steward Mt. Lemmon Sta. (Dec. 5.42p4)
K20W04P 2020 WP4 (arc=12 days, H=22.1 ~129m) from Steward Mt. Lemmon Sta. (Dec. 5.19-20p4)
K20W03O 2020 WO3 (arc=25 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (Dec. 5.17p4)
K20W03G 2020 WG3 (arc=14 days, H=24.2 ~49m) from CSS-Kuiper (Dec. 5.20p3)
K20W03E 2020 WE3 (arc=14 days, H=25.4 ~28m) from Steward Mt. Lemmon Sta. (Dec. 5.18-19p4)
K20W03C 2020 WC3 (arc=14 days, H=22.4 ~112m) from MLS (Dec. 4.21-22p4) and Steward Mt. Lemmon Sta. (Dec. 5.18p4)
K20W02V 2020 WV2 (arc=15 days, H=23.1 ~81m) from CSS-Kuiper (Dec. 5.40-43p4 at G=21.46-22.27)
K20W02F 2020 WF2 (Q=4.249 AU, arc=16 days, H=22.1 ~129m) from Steward Mt. Lemmon Sta. (Dec. 5.16-17p4)
K20W01R 2020 WR1 (arc=17 days, H=24.5 ~43m) from CSS-Kuiper (Dec. 5.29-31p4 at G=21.92-22.68)
K20V04U 2020 VU4 (arc=30 days, H=24.3 ~47m) from MLS (Dec. 4.25-27p3) and Steward Mt. Lemmon Sta. (Dec. 5.15-16p4)
K20V03Q 2020 VQ3 (arc=25 days, H=23.0 ~85m) from Steward Mt. Lemmon Sta. (Dec. 5.22p3)
K20V02F 2020 VF2 (arc=25 days, H=23.6 ~65m) from CSS-Kuiper (Dec. 5.23p4 at G=21.81-22.69)
K20V01X 2020 VX1 (arc=25 days, H=22.8 ~93m) from Steward Mt. Lemmon Sta. (Dec. 5.18p4)
K20V01K 2020 VK1 (arc=27 days, H=24.0 ~54m) from Steward Mt. Lemmon Sta. (Dec. 5.25p4)
K20V01E 2020 VE1 (arc=31 days, H=22.8 ~93m) from CSS-Kuiper (Dec. 5.24p4)
K20V01D 2020 VD1 (arc=32 days, H=24.7 ~39m) from CSS-Kuiper (Dec. 5.35p2)
K20V00T 2020 VT (arc=31 days, H=25.3 ~29m) from Steward Mt. Lemmon Sta. (Dec. 5.32-33p4)
K20U05J 2020 UJ5 (arc=70 days, H=24.2 ~49m) from CSS-Kuiper (Dec. 5.11-12p4 at G=21.33-22.12)
K20U02N 2020 UN2 (arc=50 days, H=22.5 ~107m) from Steward Mt. Lemmon Sta. (Dec. 5.31-32p4)
K20U00D 2020 UD (arc=58 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (Dec. 5.33-35p3) and Spacewatch 0.9m (Dec. 5.41-45p3)
K20T10L 2020 TL10 (arc=51 days, H=22.6 ~102m) from MLS (Dec. 4.08-10p4)
K20T07T 2020 TT7 (arc=52 days, H=22.3 ~117m) from Spacewatch 0.9m (Dec. 4.31-34p3) and Steward Mt. Lemmon Sta. (Dec. 5.35-37p4)
K20T07N 2020 TN7 (arc=52 days, H=23.6 ~65m) from Steward Mt. Lemmon Sta. (Dec. 5.26-27p4)
K20T03G 2020 TG3 (Q=4.609 AU, arc=60 days, H=22.5 ~107m) from Steward Mt. Lemmon Sta. (Dec. 5.25-26p4)
K20R11Q 2020 RQ11 (arc=83 days, H=22.2 ~123m) from Spacewatch 0.9m (Dec. 5.23-26p3)
K20Q03P 2020 QP3 (arc=108 days, H=22.7 ~98m) from MLS (Dec. 4.26-27p3)
K20P07K 2020 PK7 (arc=138 days, H=23.3 ~74m) from Steward Mt. Lemmon Sta. (Dec. 5.21p4)
K16V01O 2016 VO1 (arc=5 opp, H=23.1 ~81m) from CSS-Kuiper (Dec. 5.37-38p4 at G=21.63-22.74)
K20W02E 2020 WE2 (arc=24 days, H=21.9 ~141m) from MLS (Dec. 4.13-14p4) and Steward Mt. Lemmon Sta. (Dec. 5.17-18p4)
K20T07Q 2020 TQ7 (arc=77 days, H=22.0 ~135m) from Steward Mt. Lemmon Sta. (Dec. 5.37-38p4)
K20T04M 2020 TM4 (Q=4.140 AU, arc=54 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (Dec. 5.36-37p4)
K16T54R 2016 TR54 (arc=5 opp, H=22.0 ~135m) from Steward Mt. Lemmon Sta. (Dec. 5.32p4)
K16M00H 2016 MH (arc=268 days, H=22.0 ~135m) from Spacewatch 1.8m (2017 March 18.11-13p3)
K10P09K 2010 PK9 (q=0.221 AU, arc=4 opp, H=21.8 ~148m) from ZTF (2010 Aug. 2.38p1 & 2010 Aug. 2.42p1)
K09W11D 2009 WD11 (arc=2 opp, H=22.0 ~135m) from MLS (Dec. 4.27-29p4)
Observations of other objects
K20W05S 2020 WS5 (i=40.7°, arc=8 days, H=21.0 ~214m) from Steward Mt. Lemmon Sta. (Dec. 5.25p4)
K20W05M 2020 WM5 (Q=4.842 AU, arc=7 days, H=21.3 ~186m) from Steward Mt. Lemmon Sta. (Dec. 4.54p3 & 5.40p4)
K20W05A 2020 WA5 (arc=10 days, H=21.5 ~170m) from Steward Mt. Lemmon Sta. (Dec. 5.19-21p4)
K20W03T 2020 WT3 (i=58.6°, arc=31 days, H=19.0 ~537m) from CSS-Kuiper (Dec. 5.08-09p4)
K20W03M 2020 WM3 (i=40.4°, arc=14 days, H=18.5 ~676m) from Steward Mt. Lemmon Sta. (Dec. 4.50-52p3)
K20W02T 2020 WT2 (arc=15 days, H=21.0 ~214m) from Spacewatch 0.9m (Dec. 4.43-44p3) and Steward Mt. Lemmon Sta. (Dec. 4.52p4 & 5.40p4)
K20W02H 2020 WH2 (Q=4.560 AU, arc=16 days, H=20.1 ~323m) from Spacewatch 0.9m (Dec. 4.46-48p3)
K20V06Q 2020 VQ6 (arc=20 days, H=21.1 ~204m) from Steward Mt. Lemmon Sta. (Dec. 5.25-26p4)
K20V05Z 2020 VZ5 (arc=21 days, H=21.1 ~204m) from Spacewatch 1.8m (Dec. 4.47-48p3) and Steward Mt. Lemmon Sta. (Dec. 5.38-39p4)
K20V04L 2020 VL4 (i=55.9°, q=0.142 AU, Q=4.112 AU, arc=24 days, H=18.5 ~676m) from CSS-Kuiper (Dec. 5.17-18p4 at G=21.49-22.80)
K20V04D 2020 VD4 (i=38.4°, arc=24 days, H=21.4 ~178m) from CSS-Kuiper (Dec. 5.10-11p4)
K20V03N 2020 VN3 (arc=25 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (Dec. 4.54p4 & 5.47-48p4)
K20V03M 2020 VM3 (arc=25 days, H=20.9 ~224m) from Steward Mt. Lemmon Sta. (Dec. 5.37-38p4)
K20U07G 2020 UG7 (arc=2 opp, H=19.4 ~446m) from MLS (Dec. 4.21-23p3)
K20U02G 2020 UG2 (arc=49 days, H=21.6 ~162m) from CSS-Kuiper (Dec. 5.19p4)
K20U01V 2020 UV1 (arc=50 days, H=20.1 ~323m) from CSS-Kuiper (Dec. 5.29p3)
K20U01L 2020 UL1 (arc=57 days, H=20.1 ~323m) from Spacewatch 0.9m (Dec. 5.11-13p3)
K20T07C 2020 TC7 (arc=52 days, H=19.6 ~407m) from Spacewatch 0.9m (Dec. 5.15p2)
K20T05H 2020 TH5 (arc=53 days, H=21.1 ~204m) from NEOWISE (Dec. 2.66p1, 2.79p1, 3.05p1, 3.12p1 & 3.18p1) and Spacewatch 0.9m (Dec. 5.10-13p3)
K20T04G 2020 TG4 (Q=4.171 AU, arc=77 days, H=20.1 ~323m) from Pin Oak Obs. (Dec. 5.17-23p3)
K20S18K 2020 SK18 (arc=70 days, H=20.4 ~282m) from MLS (Dec. 4.40-41p4) and Steward Mt. Lemmon Sta. (Dec. 5.34-35p3)
K20S03F 2020 SF3 (Q=4.371 AU, arc=85 days, H=21.5 ~170m) from MLS (Dec. 4.27-29p4 at G=21.14-22.08)
K20S01K 2020 SK1 (arc=100 days, H=21.0 ~214m) from Steward Mt. Lemmon Sta. (Dec. 5.28-29p3)
K20S01C 2020 SC1 (arc=82 days, H=21.2 ~195m) from PS1 (Dec. 4.38-41p3) and Steward Mt. Lemmon Sta. (Dec. 5.23-24p4)
K20R00U 2020 RU (Q=4.833 AU, arc=97 days, H=19.3 ~467m) from Steward Mt. Lemmon Sta. (Dec. 5.36-37p4)
K20Q07A 2020 QA7 (Q=4.150 AU, arc=99 days, H=20.3 ~295m) from MLS (Dec. 4.40-42p4) and Steward Mt. Lemmon Sta. (Dec. 5.14-15p4)
K20Q06Q 2020 QQ6 (Q=4.107 AU, arc=114 days, H=19.8 ~371m) from Steward Mt. Lemmon Sta. (Dec. 5.16p4) and Spacewatch 0.9m (Dec. 5.28-29p3)
K20Q05F 2020 QF5 (arc=113 days, H=21.6 ~162m) from Steward Mt. Lemmon Sta. (Dec. 5.43-45p4)
K20Q04M 2020 QM4 (arc=108 days, H=18.6 ~645m) from PS1 (Dec. 4.37-39p3) and Steward Mt. Lemmon Sta. (Dec. 5.28-34p4)
K20P01D 2020 PD1 (Q=4.135 AU, arc=166 days, H=19.3 ~467m) from Steward Mt. Lemmon Sta. (Dec. 5.21-22p4)
K20O08C 2020 OC8 (arc=172 days, H=20.8 ~234m) from CSS (Dec. 4.25-27p3) and ATLAS Mauna Loa (Dec. 4.37-42p4)
K20O03W 2020 OW3 (Q=4.802 AU, arc=139 days, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (Dec. 5.29p4)
K20L02A 2020 LA2 (Q=7.490 AU, arc=173 days, H=19.8 ~371m) from MLS (Dec. 4.46-48p4) and Steward Mt. Lemmon Sta. (Dec. 5.14-16p4)
K18V04B 2018 VB4 (arc=3 opp, H=21.1 ~204m) from Steward Mt. Lemmon Sta. (Dec. 5.31p4 at G=22.04-17)
K17X62L 2017 XL62 (arc=2 opp, H=18.7 ~616m) from MLS (Dec. 4.06-08p4)
K17W29C 2017 WC29 (arc=3 opp, H=17.9 ~891m) from CSS-Kuiper (Dec. 5.25-28p4 at G=22.02-65)
K17V12T 2017 VT12 (arc=4 opp, H=20.4 ~282m) from MLS (Dec. 4.15-16p4)
K17S19E 2017 SE19 (arc=3 opp, H=19.8 ~371m) from CSS (Dec. 4.23-24p4)
K16W10G 2016 WG10 (Q=4.152 AU, arc=3 opp, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (Dec. 5.33-35p3)
K16V04N 2016 VN4 (arc=3 opp, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (Dec. 5.24-25p2)
K16J34N 2016 JN34 (i=45.2°, arc=3 opp, H=20.4 ~282m) from MLS (Dec. 4.27-29p4) and Steward Mt. Lemmon Sta. (Dec. 5.33p4)
K16J33U 2016 JU33 (arc=3 opp, H=20.8 ~234m) from MLS (Dec. 4.21-23p4)
K16E85D 2016 ED85 (Q=5.062 AU, arc=3 opp, H=17.7 ~977m) from ATLAS Haleakala (Dec. 4.64-66p4)
K16B14Z 2016 BZ14 (Q=4.757 AU, arc=2 opp, H=18.4 ~708m) from Spacewatch 0.9m (Dec. 4.49-51p3)
K14UB6R 2014 UR116 (arc=6 opp, H=19.8 ~371m) from MLS (Dec. 4.19-21p4)
K14L26Q 2014 LQ26 (Q=5.150 AU, arc=2 opp, H=18.3 ~741m) from PS1 (Dec. 4.46-49p3)
K13U14X 2013 UX14 (arc=4 opp, H=18.3 ~741m) from Cherokee Ridge Obs. (Dec. 4.07-13p3) and Pin Oak Obs. (Dec. 5.17p1 & 5.21-24p2)
K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from Castelmartini Obs. (Nov. 29.95p2) and ATLAS Haleakala (Dec. 4.45-47p4)
K11W02L 2011 WL2 (arc=6 opp, H=20.8 ~234m) from Spacewatch 0.9m (Dec. 4.37-39p3)
K09K08K 2009 KK8 (arc=3 opp, H=18.7 ~616m) from Spacewatch 0.9m (Dec. 5.10-13p3)
K09K00K 2009 KK (arc=5 opp, H=20.5 ~269m) from MLS (Dec. 4.29-31p4)
K07X10B 2007 XB10 (i=41.3°, arc=5 opp, H=17.7 ~977m) from MLS (Dec. 4.49-50p3)
K06UI5L 2006 UL185 (arc=6 opp, H=21.3 ~186m) from Spacewatch 0.9m (Dec. 5.18-21p3)
K06O05V 2006 OV5 (Q=4.250 AU, arc=4 opp, H=19.1 ~513m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2010 Feb. 21.47p1 at G=24.07 & 2010 March 24.53-54p2 at G=22.93-95)
K05Q10S 2005 QS10 (arc=4 opp, H=18.8 ~589m) from NEOWISE (Dec. 2.26p1, 2.33p1, 2.39p1, 2.46p1, 2.52p1, 2.59p1, 2.65p1, 2.72p1, 3.11p1, 3.24p1, 3.50p2 & 3.77p1)
K05C37R 2005 CR37 (arc=7 opp, H=18.9 ~562m) from Spacewatch 1.8m (Dec. 4.53-54p2)
K04L03U 2004 LU3 (arc=5 opp, H=18.4 ~708m) from CSS (Dec. 4.27-28p3)
K03Y00J 2003 YJ (arc=4 opp, H=20.3 ~295m) from CSS (Dec. 4.35-37p4) and ATLAS Mauna Loa (Dec. 4.40-46p4)
K03U03Q 2003 UQ3 (arc=3 opp, H=19.6 ~407m) from PS2 (Dec. 4.25-29p4)
K03J17C 2003 JC17 (Q=4.022 AU, arc=3 opp, H=17.8 ~933m) from ATLAS Mauna Loa (Dec. 4.23-26p7)
K02T67S 2002 TS67 (arc=6 opp, H=19.1 ~513m) from Pin Oak Obs. (Dec. 5.19-25p3)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.7 ~616m) from Pin Oak Obs. (Dec. 5.27-33p3)
r0938 530938 2011 XE from ATLAS Mauna Loa (Dec. 4.30-32p4)
p3125 513125 1997 GC32 from PS2 (Dec. 4.54-56p3)
m0824 480824 1999 JO6 from ZTF (Dec. 2.17-21p3, 2.30p1, 4.14p2, 4.19p1 & 4.37p1)
k5749 465749 2009 WO6 from ZTF (Dec. 2.39p2 & 2.45p2)
j9386 459386 2012 KJ11 from ZTF (Dec. 2.12-14p4) and ATLAS Haleakala (Dec. 4.28-30p4)
j0263 450263 2003 WD158 from Steward Mt. Lemmon Sta. (Dec. 4.28p1) and PS1 (Dec. 4.44-48p4)
g8086 428086 2006 NM from Pin Oak Obs. (Dec. 5.05p1, 5.10p1 & 5.14p1)
f5029 415029 2011 UL21 from ATLAS Haleakala (Dec. 4.61p1 & 4.66p2)
c8185 388185 2006 CX10 from program code 7 via Discovery Channel Telescope (DCT) (Nov. 22.24p3 at G=22.5-6)
c0929 380929 2006 HU30 from PS1 (Dec. 4.32-40p7) and PS2 (Dec. 4.35-37p3)
c0321 380321 2002 HF8 from MLS (Dec. 4.34-35p4)
b6848 376848 2001 RY47 from MLS (Dec. 4.14-16p4)
b3579 373579 2002 AW11 from PS1 (Dec. 4.45-49p4)
Z5046 355046 2006 SO19 from PS1 (Dec. 4.45-48p3)
Y5705 345705 2006 VB14 from Castelmartini Obs. (Nov. 29.72-73p3), MLS (Dec. 4.06-08p4), and ATLAS Haleakala (Dec. 4.32-34p4)
V6695 316695 1996 TE9 from NEOWISE (Dec. 2.14p1, 2.27p1, 2.40p1, 2.93p1, 3.25p1, 3.45p1, 3.91p1 & 3.97p1) and MLS (Dec. 4.10-12p4)
R6786 276786 2004 KD1 from PS2 (Dec. 4.44-47p4)
L3053 213053 1998 WT30 from MLS (Dec. 4.34-35p4) and the Bok Telescope (Dec. 5.27-28p4)
I6822 186822 2004 FE31 from ATLAS Mauna Loa (Dec. 4.32-34p4)
G3902 163902 2003 SW222 from Pin Oak Obs. (Dec. 5.07p1, 5.11p1 & 5.16p1)
G3364 163364 2002 OD20 from MLS (Dec. 4.21-23p4) and ATLAS Haleakala (Dec. 4.45-47p4)
G3081 163081 2002 AG29 from PS2 (Dec. 4.26-29p4)
G2173 162173 Ryugu (1999 JU3) from Castelmartini Obs. (Nov. 29.78p3), CSS (Dec. 4.12-14p4), and Southern Utsunomiya (Dec. 4.35-38p12)
F5140 155140 2005 UD from PS1 (Dec. 4.37-39p3)
F4330 154330 2002 VX94 from Castelmartini Obs. (Nov. 29.93-94p3) and ATLAS Haleakala (Dec. 4.46-50p4)
F4302 154302 2002 UQ3 from CSS (Dec. 4.19-20p4), ATLAS Mauna Loa (Dec. 4.29-33p9), Geyserland Obs. (Dec. 4.44-45p3), and Pin Oak Obs. (Dec. 5.03p1, 5.08p1 & 5.13p1)
F3220 153220 2000 YN29 from MLS (Dec. 4.40-42p4)
F2978 152978 2000 GJ147 from Castelmartini Obs. (Nov. 29.90-91p3), MLS (Dec. 4.19-21p4), and ATLAS Haleakala (Dec. 4.43-45p4)
F2931 152931 2000 EA107 from ZTF (Dec. 4.55-56p2)
E4411 144411 2004 EW9 from Castelmartini Obs. (Nov. 29.87-88p3) and ATLAS Haleakala (Dec. 4.42-44p4)
E1052 141052 2001 XR1 from MLS (Dec. 4.17-18p4)
D8095 138095 2000 DK79 from ATLAS Mauna Loa (Dec. 4.23-25p8)
D7062 137062 1998 WM from ZTF (Dec. 4.55-57p4)
99935 99935 2002 AV4 from ATLAS Haleakala (Dec. 4.60-62p4)
88188 88188 2000 XH44 from Pin Oak Obs. (Dec. 5.28-34p3)
85275 85275 1994 LY from ATLAS Mauna Loa (Dec. 4.36-40p3)
68359 68359 2001 OZ13 from ZTF (Nov. 30.11p1, 30.21p1, Dec. 2.30p1, 2.38p1, 4.15p1 & 4.25-29p3) and CSS (Dec. 4.25-26p4)
68267 68267 2001 EA16 from MLS (Dec. 4.53-55p4)
66272 66272 1999 JW6 from MLS (Dec. 4.42-44p4) and ATLAS Haleakala (Dec. 4.51-54p4)
65717 65717 1993 BX3 from Cherokee Ridge Obs. (Dec. 4.11-14p2), CSS (Dec. 4.25-26p4), and Pin Oak Obs. (Dec. 5.06p1, 5.11p1 & 5.15p1)
55532 55532 2001 WG2 from PS1 (Dec. 4.44-48p3)
36183 36183 1999 TX16 from ATLAS Mauna Loa (Dec. 4.22-24p4)
35107 35107 1991 VH from ATLAS Mauna Loa (Dec. 4.23-25p4)
31669 31669 1999 JT6 from ZTF (Dec. 4.55-57p4)
30825 30825 1990 TG1 from CSS (Dec. 4.09-10p3)
29075 29075 1950 DA from NEOWISE (Nov. 23.60p1, 24.25p1, 24.58p1, 25.17p1, 25.30p1, 25.50p1 & 26.41p1)
20460 20460 Robwhiteley (1999 LO28) from MLS (Dec. 4.06-08p4)
16834 16834 1997 WU22 from MLS (Dec. 4.21-23p4) and ATLAS Haleakala (Dec. 4.46-48p4)
12538 12538 1998 OH from ATLAS Mauna Loa (Dec. 4.49-50p4) and Pin Oak Obs. (Dec. 5.26-32p3)
11405 11405 1999 CV3 from ATLAS Mauna Loa (Dec. 4.23-26p8)
10115 10115 1992 SK from PS1 (Dec. 4.32-40p8), PS2 (Dec. 4.33-42p11), and ATLAS Haleakala (Dec. 4.41-43p4)
09172 9172 Abhramu (1989 OB) from ZTF (Dec. 2.12-15p2, 4.09p1 & 4.17-18p2)
08567 8567 1996 HW1 from ZTF (Dec. 2.47-49p2, 4.44p1 & 4.51p1)
08037 8037 1993 HO1 from ATLAS Haleakala (Dec. 4.62-66p4)
08014 8014 1990 MF from ATLAS Haleakala (Dec. 4.47-50p7)
07977 7977 1977 QQ5 from ATLAS Mauna Loa (Dec. 4.21-23p4) and Geyserland Obs. (Dec. 4.37-38p4)
05879 5879 Almeria (1992 CH1) from ATLAS Mauna Loa (Dec. 4.55-56p4)
05863 5863 Tara (1983 RB) from PS1 (Dec. 4.49-52p3)
05836 5836 1993 MF from MLS (Dec. 4.46-48p4)
05751 5751 Zao (1992 AC) from SATINO-1 (July 11.95-96p3)
05587 5587 1990 SB from ZTF (Dec. 4.14p1, 4.19p1, 4.25p1 & 4.39-41p2) and CSS (Dec. 4.29-31p4)
05143 5143 Heracles (1991 VL) from ZTF (Dec. 2.13-15p2 & 4.17-18p2)
05131 5131 1990 BG from ATLAS Haleakala (Dec. 4.62-65p4)
04953 4953 1990 MU from ATLAS Mauna Loa (Dec. 4.28-30p7)
04947 4947 Ninkasi (1988 TJ1) from CSS (Dec. 4.12-14p3)
04503 4503 Cleobulus (1989 WM) from ATLAS Haleakala (Dec. 4.40-42p4)
04055 4055 Magellan (1985 DO2) from ATLAS Mauna Loa (Dec. 4.36-40p4)
03908 3908 Nyx (1980 PA) from CSS (Dec. 4.10-11p3)
03752 3752 Camillo (1985 PA) from ATLAS Mauna Loa (Dec. 4.20-22p4)
03691 3691 Bede (1982 FT) from ZTF (Nov. 30.07p1, 30.15p1, Dec. 4.09p1 & 4.17p1) and CSS (Dec. 4.10-12p2)
02329 2329 Orthos (1976 WA) from ZTF (Dec. 4.55-56p2)
02212 2212 Hephaistos (1978 SB) from ATLAS Haleakala (Dec. 4.43-45p4)
01981 1981 Midas (1973 EA) from CSS (Dec. 4.09-10p2)
01980 1980 Tezcatlipoca (1950 LA) from ATLAS Mauna Loa (Dec. 4.62-65p4)
01943 1943 Anteros (1973 EC) from CSS (Dec. 4.47-49p3)
01580 1580 Betulia (1950 KA) from MLS (Dec. 4.44-45p4)
01036 1036 Ganymed (1924 TD) from ZTF (Dec. 2.38-43p3, 4.38p1 & 4.45p1) and ATLAS Mauna Loa (Dec. 4.49-51p4)
00887 887 Alinda (1918 DB) from CSS (Dec. 4.15-16p4) and ATLAS Mauna Loa (Dec. 4.27-30p4)
00433 433 Eros (1898 DQ) from G. Gasparovic via Slooh.com Chile Obs. (Dec. 2.31-34p3) and CSS (Dec. 4.53-55p4)

MPEC 2020-X14 - "02:55 UT" - 2020 XC

K20X00C 2020 XC (risk listed, Earth MOID=0.2 LD, H=29.1 ~5m, close passer) was picked up at 0734 UT on 4 Dec. by MLS, observing it at Dec. 4.32-33p4. This detection was confirmed by CSS (Dec. 3.36-38p4), Steward Mt. Lemmon Sta. (Dec. 4.40-44p6 & 5.10p3), Paus Obs. (Dec. 4.78-81p5), ARO Westfield (Dec. 5.03-04p2), and Sandlot Obs. (Dec. 5.10-11p4).

Observers on 5 December '20

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

Code	Observer / observatory
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2020-X22 -- 2020 XH
`H21`	Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2020-X14, 2020-X16, 2020-X17, 2020-X20 & 2020-X22 -- 2020 XH, 2020 XG, 2020 XE, 2020 XD, 2020 XC
`T05`	ATLAS Haleakala in Hawaii, 18 in MPEC 2020-X15 -- 2016 ED85, 2013 PY6, 99935, 66272, 459386, 415029, 345705, 16834, 163364, 154330, 152978, 144411, 10115, 8037, 8014, 5131, 4503, 2212
`T08`	ATLAS Mauna Loa in Hawaii, 21 in MPEC 2020-X15 -- 2020 SO, 2020 OC8, 2003 YJ, 2003 JC17, 85275, 530938, 36183, 35107, 186822, 154302, 138095, 12538, 11405, 7977, 5879, 4953, 4055, 3752, 1980, 1036, 887
`V00`	Bok Telescope in Arizona, 1 in MPEC 2020-X15 -- 213053
`160`	Castelmartini Obs. in Italy, 6 in MPEC 2020-X15 -- 2013 PY6, 345705, 162173, 154330, 152978, 144411
`703`	Catalina Sky Survey (CSS) in Arizona, 22 in MPECs 2020-X14, 2020-X15, 2020-X18, 2020-X19 & 2020-X22 -- 2020 XH, 2020 XF, 2020 XC, 2020 VC7, 2020 OC8, 2017 SE19, 2004 LU3, 2003 YJ, 68359, 65717, 30825, 162173, 154302, 5587, 4947, 4179, 3908, 3691, 1981, 1943, 887, 433
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 19 in MPEC 2020-X15 -- 2020 WZ3, 2020 WV4, 2020 WV2, 2020 WT3, 2020 WR1, 2020 WG3, 2020 VZ2, 2020 VX3, 2020 VL4, 2020 VF2, 2020 VE1, 2020 VD4, 2020 VD1, 2020 UV1, 2020 US2, 2020 UJ5, 2020 UG2, 2017 WC29, 2016 VO1
`V94`	Cherokee Ridge Obs., 2 in MPEC 2020-X15 -- 2013 UX14, 65717
`G377`	program code 7 via Discovery Channel Telescope in Arizona, 1 in MPEC 2020-X15 -- 388185
`E10,`	program code "," (21) via Faulkes Telescope South in New South Wales, 1 in MPEC 2020-X15 -- 2020 WY
`E89`	Geyserland Obs. in New Zealand, 2 in MPEC 2020-X15 -- 154302, 7977
`Q70`	Glenlee Obs., 1 in MPEC 2020-X22 -- 2020 XH
`U55`	Golden Ears Obs., 3 in MPECs 2020-X15, 2020-X16 & 2020-X17 -- 2020 XE, 2020 XD, 2020 XC
`J95`	Great Shefford Obs. in England, 2 in MPECs 2020-X18 & 2020-X19 -- 2020 XF, 2020 VC7
`598`	Loiano Obs. in Italy, 1 in MPEC 2020-X15 -- 2020 SO
`900`	Moriyama Obs. in Japan, 2 in MPECs 2020-X18 & 2020-X22 -- 2020 XH, 2020 XF
`V01`	Mountainville Obs. in Utah, 3 in MPECs 2020-X16, 2020-X17 & 2020-X19 -- 2020 XE, 2020 XD, 2020 VC7
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 41 in MPECs 2020-X14, 2020-X15, 2020-X16, 2020-X17, 2020-X19 & 2020-X20 -- 2020 XG, 2020 XE, 2020 XD, 2020 XC, 2020 WE2, 2020 WC3, 2020 VU4, 2020 VC7, 2020 UG7, 2020 TL10, 2020 SK18, 2020 SF3, 2020 QP3, 2020 QA7, 2020 LA2, 2019 XS, 2017 XL62, 2017 WJ16, 2017 VT12, 2016 JU33, 2016 JN34, 2014 UR116, 2013 YS2, 2009 WD11, 2009 KK, 2007 XB10, 68267, 66272, 380321, 376848, 345705, 316695, 213053, 20460, 16834, 163364, 153220, 152978, 141052, 5836, 1580
`C51`	NEOWISE in Earth polar orbit, 5 in MPEC 2020-X15 -- 2020 WT5, 2020 TH5, 2005 QS10, 316695, 29075
`Z80`	Northolt Branch Obs. in England, 1 in MPEC 2020-X18 -- 2020 XF
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 14 in MPECs 2020-X15, 2020-X16, 2020-X18 & 2020-X19 -- 2020 XF, 2020 XD, 2020 VC7, 2020 SC1, 2020 QM4, 2014 LQ26, 55532, 450263, 380929, 373579, 355046, 155140, 10115, 5863
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 9 in MPECs 2020-X15, 2020-X16, 2020-X17 & 2020-X18 -- 2020 XF, 2020 XE, 2020 XD, 2003 UQ3, 513125, 380929, 276786, 163081, 10115
`B49`	Paus Obs. in Spain, 5 in MPECs 2020-X14, 2020-X15, 2020-X16, 2020-X17 & 2020-X22 -- 2020 XH, 2020 XE, 2020 XD, 2020 XC, 2020 WK3
`V93`	Pin Oak Obs., 10 in MPEC 2020-X15 -- 2020 TG4, 2013 UX14, 2002 TS67, 2002 GZ8, 88188, 65717, 428086, 163902, 154302, 12538
`K61`	Rokycany Obs. in the Czech Republic, 1 in MPEC 2020-X18 -- 2020 XF
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2020-X14 -- 2020 XC
`C95`	SATINO-1 in France, 1 in MPEC 2020-X15 -- 5751
`0948`	program code 8 via Simeis Obs. in Ukraine, 1 in MPEC 2020-X15 -- 99942
`W884`	G. Gasparovic in Croatia via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-X15 -- 433
`Q21`	Southern Utsunomiya in Japan, 1 in MPEC 2020-X15 -- 162173
`691`	Spacewatch 0.9m telescope in Arizona, 21 in MPECs 2020-X15, 2020-X16, 2020-X19 & 2020-X20 -- 2020 XG, 2020 XD, 2020 WT2, 2020 WH2, 2020 WF3, 2020 VX5, 2020 VC7, 2020 UL1, 2020 UF7, 2020 UD, 2020 TT7, 2020 TH5, 2020 TC7, 2020 TB12, 2020 SO, 2020 RQ11, 2020 QQ6, 2016 BZ14, 2011 WL2, 2009 KK8, 2006 UL185
`291`	Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2020-X15 & 2020-X17 -- 2020 XE, 2020 WY, 2020 WT4, 2020 WG5, 2020 WF5, 2020 VZ5, 2016 MH, 2005 CR37
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 62 in MPECs 2020-X14, 2020-X15, 2020-X16, 2020-X17, 2020-X18, 2020-X19, 2020-X20 & 2020-X22 -- 2020 XH, 2020 XG, 2020 XF, 2020 XE, 2020 XD, 2020 XC, 2020 WZ4, 2020 WV4, 2020 WT2, 2020 WS5, 2020 WP4, 2020 WO3, 2020 WM5, 2020 WM3, 2020 WL5, 2020 WK3, 2020 WF3, 2020 WF2, 2020 WE3, 2020 WE2, 2020 WC3, 2020 WB2, 2020 WA5, 2020 VZ5, 2020 VX1, 2020 VU4, 2020 VT, 2020 VQ6, 2020 VQ3, 2020 VN3, 2020 VM3, 2020 VK1, 2020 VC7, 2020 UN2, 2020 UD, 2020 TT7, 2020 TQ7, 2020 TN7, 2020 TM4, 2020 TJ8, 2020 TG3, 2020 TB12, 2020 SO, 2020 SK18, 2020 SK1, 2020 SC1, 2020 RU, 2020 QQ6, 2020 QM4, 2020 QF5, 2020 QA7, 2020 PX1, 2020 PK7, 2020 PD1, 2020 OW3, 2020 LA2, 2018 VB4, 2016 WG10, 2016 VN4, 2016 TR54, 2016 JN34, 450263
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-X15 -- 2006 OV5
`718`	Wiggins Obs. in Utah, 2 in MPECs 2020-X18 & 2020-X22 -- 2020 XH, 2020 XF
`N88`	Xingming Obs. #3, 2 in MPECs 2020-X16 & 2020-X22 -- 2020 XH, 2020 XD
`I41`	Zwicky Transient Facility (ZTF) in southern California, 17 in MPECs 2020-X15 & 2020-X22 -- 2020 XH, 2010 PK9, 68359, 480824, 465749, 459386, 31669, 152931, 137062, 11398, 9172, 8567, 5587, 5143, 3691, 2329, 1036

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

Impact Risk Monitoring on 5 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 XG	JPL Sentry	2358	2081-2120	75	5.43760957e-05	-5.98	-6.72	0	JPL: Computed at 15:52 today Pacific time based on 15 observations spanning 1.0875 days (2020-Dec-04.336897 to 2020-Dec-05.42441). Diameter approximately 0.008 km. from weighted mean H=28.02.

2020 XF	JPL Sentry	2358	2056-2119	140	0.00037407241	-4.49	-5.20	0	JPL: Computed at 15:53 today Pacific time based on 30 observations spanning 1.4784 days (2020-Dec-04.32683 to 2020-Dec-05.805211). Diameter approximately 0.016 km. from weighted mean H=26.61.

2020 XE	JPL Sentry	2200	2040-2044	3	3.1499598e-06	-5.25	-5.27	0	JPL: Computed at 13:00 today Pacific time based on 30 observations spanning .89823 days (2020-Dec-04.397182 to 2020-Dec-05.295413). Diameter approximately 0.021 km. from weighted mean H=26.02.

2020 XC	JPL Sentry	2002	2060-2075	4	1.8823866e-06	-7.91	-7.92	0	JPL: Computed at 11:07 today Pacific time based on 31 observations spanning 1.7606 days (2020-Dec-03.36221 to 2020-Dec-05.122765). Diameter approximately 0.005 km. from weighted mean H=29.00.

2020 WG5	JPL Sentry	2002	2086-2120	14	0.0002112325	-5.30	-5.41	0	JPL: Computed at 11:36 today Pacific time based on 46 observations spanning 8.0250 days (2020-Nov-27.251726 to 2020-Dec-05.27675). Diameter approximately 0.010 km. from weighted mean H=27.67.

2020 WF5	JPL Sentry	2002	2078-2118	22	1.829316e-05	-6.31	-6.91	0	JPL: Computed at 11:25 today Pacific time based on 32 observations spanning 8.2131 days (2020-Nov-27.231322 to 2020-Dec-05.4444). Diameter approximately 0.010 km. from weighted mean H=27.74.

2020 WT4	JPL Sentry	2002	2062-2119	6	6.94914e-06	-6.82	-7.05	0	JPL: Computed at 11:36 today Pacific time based on 28 observations spanning 10.929 days (2020-Nov-24.190527 to 2020-Dec-05.11929). Diameter approximately 0.010 km. from weighted mean H=27.75.

2020 WZ3	JPL Sentry	2002	2089-2119	12	2.6252e-05	-5.55	-5.98	0	JPL: Computed at 11:07 today Pacific time based on 38 observations spanning 11.982 days (2020-Nov-23.352624 to 2020-Dec-05.334309). Diameter approximately 0.020 km. from weighted mean H=26.16.

2010 XC	JPL Sentry	1900	2021-2111	324	2.9148124e-06	-7.34	-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.

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 5 December '20

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

2358	Noted that JPL Sentry has posted 2020 XF as an impact risk - see above Noted that JPL Sentry has posted 2020 XG as an impact risk - see above
2330	Grabbed MPEC 2020-X21 - Erroneous MPECs 2020-X01 and 2020-X02 - see above Grabbed MPEC 2020-X22 - 2020 XH - see above
2232	Grabbed MPEC 2020-X18 - 2020 XF - see above Grabbed MPEC 2020-X19 - 2020 VC7 - see above Grabbed MPEC 2020-X20 - 2020 XG - see above
2200	Noted that JPL Sentry has posted 2020 XE as an impact risk - see above
2002	Noted that JPL Sentry has updated its 2020 WF5 risk assessment - see above Noted that JPL Sentry has updated its 2020 WG5 risk assessment - see above Noted that JPL Sentry has updated its 2020 WT4 risk assessment - see above Noted that JPL Sentry has updated its 2020 WZ3 risk assessment - see above Noted that JPL Sentry has posted 2020 XC as an impact risk - see above Grabbed MPEC 2020-X16 - 2020 XD - see above Grabbed MPEC 2020-X17 - 2020 XE - see above
1900	Noted that JPL Sentry has updated its 2010 XC risk assessment - see above
1800	Grabbed MPEC 2020-X14 - 2020 XC - see above Grabbed MPEC 2020-X15 - Daily Orbit Update - see above

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