2020-11-25 Tracking News

Contents on 25 November '20

IAU Minor Planet Center
- NEOCP Activity -- 30 listings
- New MPECs -- sixteen MPECs
Observers -- 49 observers
Impact Risk Monitoring -- 21 objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1225 risk-listed objects, 209 have had news in the last 31 days. Updated at 2133 UTC on 25 Nov.
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 25 November '20

The MPC's NEO Confirmation Page has 30 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 30 objects listed. Of these, fifteen were "one nighters." So far The Tracking News has counted a total of 50 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 25 November '20

Minor Planet Electronic Circulars

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

MPEC 2020-W148 time-stamped "00:25 UT" - 2020 SK18 - see below
MPEC 2020-W149 time-stamped "01:17 UT" - 2006 LD1 - see below
MPEC 2020-W150 time-stamped "01:26 UT" - 2020 WH4 - see below
MPEC 2020-W151 time-stamped "12:08 UT" - Daily Orbit Update - see below
MPEC 2020-W152 time-stamped "12:57 UT" - 2020 WJ4 - see below
MPEC 2020-W153 time-stamped "13:26 UT" - 2020 WN4 - see below
MPEC 2020-W154 time-stamped "19:16 UT" - 2020 UG7 = 2003 WC46 - see below
MPEC 2020-W155 time-stamped "19:30 UT" - 2020 WP4 - see below
MPEC 2020-W156 time-stamped "20:42 UT" - 2020 AV2 - see below
MPEC 2020-W157 time-stamped "22:40 UT" - 2009 WG104 - see below
MPEC 2020-W158 time-stamped "23:37 UT" - 2020 WQ4 - see below
MPEC 2020-W159 time-stamped "23:43 UT" - 2020 WR4 - see below
MPEC 2020-W160 time-stamped "23:45 UT" - 2020 WS4 - see below
MPEC 2020-W161 time-stamped "23:47 UT" - 2020 WT4 - see below
MPEC 2020-W162 time-stamped "23:48 UT" - 2020 WU4 - see below
MPEC 2020-W163 time-stamped "23:51 UT" - 2020 WV4

MPEC 2020-W163 - "23:51 UT" - 2020 WV4

K20W04V 2020 WV4 (small asteroid, H=24.2 ~49m) was picked up at 1049 UT on 23 Nov. by the Mt. Lemmon Survey (MLS), observing it at Nov. 23.45-47p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (Nov. 23.50-52p4 & 25.29-30p4) and Visnjan Obs. (Nov. 25.10-11p5).

MPEC 2020-W162 - "23:48 UT" - 2020 WU4

K20W04U 2020 WU4 (small asteroid, Earth MOID=4.8 LD, H=26.6 ~16m) was picked up at 1120 UT on 23 Nov. by MLS, observing it at Nov. 23.47-49p4 and 24.35-37p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Nov. 23.53p3 & 25.36p3), Visnjan Obs. (Nov. 24.97-98p3), and program code 1 via KLENOT (Nov. 25.03p3).

MPEC 2020-W161 - "23:47 UT" - 2020 WT4

K20W04T 2020 WT4 (small asteroid, Earth MOID=2.1 LD, H=27.6 ~10m) was picked up at 0434 UT on 24 Nov. by MLS, observing it at Nov. 24.19-21p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Nov. 24.24-26p4 & 25.17-18p3), Visnjan Obs. (Nov. 24.78p2 & 24.85-86p3), KLENOT/code 1 (Nov. 25.02p3), and Great Shefford Obs. (Nov. 25.89-91p2).

MPEC 2020-W160 - "23:45 UT" - 2020 WS4

K20W04S 2020 WS4 (small asteroid, Earth MOID=3.1 LD, H=26.6 ~16m) was picked up at 0626 UT on 24 Nov. by MLS, observing it at Nov. 24.27-28p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Nov. 24.37p4 & 25.18p3), Visnjan Obs. (Nov. 24.91-92p5), KLENOT/code 1 (Nov. 24.93-97p5 & 25.91-92p4), and Schiaparelli Obs. (Nov. 24.99-01p2).

MPEC 2020-W159 - "23:43 UT" - 2020 WR4

K20W04R 2020 WR4 (small asteroid, Earth MOID=5.3 LD, H=26.1 ~20m) was picked up at 0439 UT on 24 Nov. by MLS, observing it at Nov. 24.19-21p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Nov. 24.26-27p4 & 25.22p4), the Spacewatch 0.9m telescope (Nov. 24.38-41p3), Visnjan Obs. (Nov. 24.87-89p3), KLENOT/code 1 (Nov. 25.01p5 & 25.89p3), and Schiaparelli Obs. (Nov. 25.87-89p2).

MPEC 2020-W158 - "23:37 UT" - 2020 WQ4

K20W04Q 2020 WQ4 (small asteroid, Earth MOID=8.9 LD, H=26.5 ~17m) was picked up at 0344 UT on 25 Nov. by MLS, observing it at Nov. 25.16-17p2. This detection was confirmed by Steward Mt. Lemmon Sta. (Nov. 25.21p4, 25.32-33p3 & 25.39p4), Visnjan Obs. (Nov. 25.78-79p5), Farra d'Isonzo Obs. (Nov. 25.81-82p2), Great Shefford Obs. (Nov. 25.83-85p3), Clixby Obs. (Nov. 25.88-89p4), KLENOT/code 1 (Nov. 25.88-89p11), GiaGa Obs. (Nov. 25.88-91p3), and Pascoli Obs. (Nov. 25.93p3).

MPEC 2020-W157 - "22:40 UT" - 2009 WG104

K09WA4G 2009 WG104 (H=20.3 ~295m) from Pan-STARRS 1 (PS1) (2011 June 7.41-44p3 at G=21.65-78, 2011 June 8.37p1 at G=21.02, 2018 Dec. 13.54-58p4 at G=22.63-23.08, 2018 Dec. 16.54-57p3 at G=22.30-62, 2019 Jan. 4.58-61p8 at G=21.47-22.66, 2019 Jan. 13.50-53p3 at G=22.28-71, 2019 Jan. 27.38-42p4 at G=21.94-22.70 & June 22.57-59p3 at G=20.57-21.68), Pan-STARRS 2 (PS2) (Oct. 12.59p1), the Zwicky Transient Facility (ZTF) (Nov. 23.36p2 & 23.41p2), and Visnjan Obs. (Nov. 25.88-90p5)

MPEC 2020-W156 - "20:42 UT" - 2020 AV2

K20A02V 2020 AV2 (IEO, Q=0.654 AU, H=16.4 ~1.78 km) from program code "@" (41) via Mt. Palomar (Nov. 24.56p3) and Xingming Obs. #3 (Nov. 24.99p4)

MPEC 2020-W155 - "19:30 UT" - 2020 WP4

K20W04P 2020 WP4 (borderline-small, H=22.0 ~135m) was picked up at 1339 UT on 23 Nov. by ATLAS Haleakala, observing it at Nov. 23.57-61p4. This detection was confirmed by Great Shefford Obs. (Nov. 23.77-79p4 & 25.74-75p3), GINOP-KHK (Nov. 23.85p5 & 24.85p3), Northolt Branch Obs. (Nov. 23.86-88p3), Drebach Obs. (Nov. 23.87-88p3, 24.77p4 & 25.79-80p2), Nastro Verde Obs. (Nov. 23.89-92p10), Pascoli Obs. (Nov. 23.90-91p3), Ceccano Obs. (Nov. 23.94p2), Visnjan Obs. (Nov. 24.04p3), Squirrel Valley Obs. (Nov. 24.05-07p3), Schiaparelli Obs. (Nov. 24.07p3), Farra d'Isonzo Obs. (Nov. 24.76-82p5), Xingming Obs. #3 (Nov. 24.80p5), Salvatore di Giacomo Obs. (Nov. 24.81p2), Spica Obs. (Nov. 24.87-88p3), MPC code L16 (Nov. 24.89-96p10), KLENOT/code 1 (Nov. 24.95-96p9), GiaGa Obs. (Nov. 24.99-00p3), M57 Obs. (Nov. 24.99-01p3), Mountainville Obs. (Nov. 25.14-21p3), Wiggins Obs. (Nov. 25.44-46p6), ATLAS Mauna Loa (Nov. 25.55-57p4), and Clixby Obs. (Nov. 25.75-77p6).

MPEC 2020-W154 - "19:16 UT" - 2020 UG7 = 2003 WC46

K20U07G 2020 UG7 (H=19.3 ~467m)

MPEC 2020-W153 - "13:26 UT" - 2020 WN4

K20W04N 2020 WN4 (small asteroid, H=22.5 ~107m) was picked up at 1208 UT on 22 Nov. by MLS, observing it at Nov. 12.43-44p3 and 22.51-52p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Nov. 22.54p3 at G=20.70-22.14 & 25.34-38p6 at G=20.16-21.07), Visnjan Obs. (Nov. 23.04-05p4), the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Nov. 23.32-33p3), Sandlot Obs. (Nov. 23.37-38p2), and Astronomical Research Obs. Westfield (Nov. 23.38-39p3).

MPEC 2020-W152 - "12:57 UT" - 2020 WJ4

K20W04J 2020 WJ4 (H=21.0 ~214m) was picked up at 0939 UT on 24 Nov. by MLS, observing it at Nov. 14.42-43p4 at G=21.3-22.2 and 24.40-42p4 at G=20.84-21.26. This detection was confirmed by Steward Mt. Lemmon Sta. (Nov. 24.44-45p2 & 25.38p3), Visnjan Obs. (Nov. 25.07-08p4), and Spacewatch 0.9m (Nov. 25.36-41p3).

<< DOU on 25 November '20 >> MPEC 2020-W151 - "12:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K20W03Z 2020 WZ3 (small asteroid, arc=2 days, H=26.1 ~20m) from Spacewatch 0.9m (Nov. 25.23-27p3)
K20W03B 2020 WB3 (Q=4.347 AU, arc=4 days, H=20.4 ~282m) from LCO McDonald Obs. (Nov. 24.06p2), Steward Mt. Lemmon Sta. (Nov. 25.06p4), and the Spacewatch 1.8m telescope (Nov. 25.06-08p3)
K20W01E 2020 WE1 (small asteroid, Q=4.458 AU, arc=9 days, H=22.3 ~117m) from Spacewatch 1.8m (Nov. 25.14-16p3) and Steward Mt. Lemmon Sta. (Nov. 25.20p3)
K20W00D 2020 WD (small asteroid, arc=9 days, H=28.2 ~8m, close passer, NHATS target) from Spacewatch 1.8m (Nov. 25.43-44p2 at R=22.3-7)
K20V06K 2020 VK6 (small asteroid, Q=4.223 AU, arc=13 days, H=25.5 ~27m) from Spacewatch 1.8m (Nov. 25.29-30p3)
K20V04A 2020 VA4 (small asteroid, arc=11 days, H=27.4 ~11m, close passer, NHATS target) from program code 5 via Discovery Channel Telescope (DCT) (Nov. 18.10p4)
K20V02U 2020 VU2 (small asteroid, arc=7 days, H=27.8 ~9m, close passer) from DCT/code 5 (Nov. 18.23-24p3 at G=23.4-9)
K20V01N 2020 VN1 (small asteroid, arc=17 days, H=27.9 ~9m, close passer, NHATS target) from Spacewatch 1.8m (Nov. 25.35-37p2)
K20V00W 2020 VW (small asteroid, arc=13 days, H=28.5 ~7m, close passer, NHATS target) from DCT/code 5 (Nov. 18.18-20p2 at G=22.3-23.6)
K20V00V 2020 VV (small asteroid, arc=18 days, H=27.2 ~12m, close passer, NHATS target) from MLS (Nov. 14.20-22p3 at G=21.6-22.4), DCT/code 5 (Nov. 18.08p4 at G=21.7-22.1), and program code "#" (12) via Discovery Channel Telescope (DCT) (Nov. 22.28p4 at r=22.4-7)
K20U04O 2020 UO4 (small asteroid, arc=26 days, H=28.6 ~6m, close passer, NHATS target) from DCT/code 5 (Nov. 18.12p2 at G=22.2-23.0)
K20U03Q 2020 UQ3 (small asteroid, arc=36 days, H=23.8 ~59m) from DCT/code 5 (Nov. 18.13p2 at G=23.0-2)
K20U00E 2020 UE (small asteroid, arc=34 days, H=25.5 ~27m, close passer) from DCT/code 5 (Nov. 18.15-16p2 at G=23.1-24.0)
K20T04Y 2020 TY4 (small asteroid, arc=36 days, H=24.0 ~54m) from DCT/code 5 (Nov. 18.09p2 at G=23.1-4)
K20T03Z 2020 TZ3 (small asteroid, arc=49 days, H=24.8 ~37m, close passer) from DCT/code 5 (Nov. 18.11p2 at G=23.6-7)
K20S06P 2020 SP6 (small asteroid, arc=51 days, H=26.4 ~18m, close passer) from DCT/code 5 (Nov. 18.26-28p2 at G=25.0-5)
K20Q01N 2020 QN1 (small asteroid, arc=110 days, H=23.1 ~81m, NHATS target) from DCT/code 5 (Nov. 18.06-07p4 at G=22.1-23.0)
Observations of recently (no longer) risk-listed objects
K20W02S 2020 WS2 (small asteroid, Q=4.588 AU, arc=3 days, H=24.6 ~41m) from KLENOT/code 1 (Nov. 24.90p2)
K20W00N 2020 WN (small asteroid, arc=6 days, H=27.5 ~11m, close passer) from ARO Westfield (Nov. 17.24p2)
K20W00G 2020 WG (Q=4.011 AU, arc=9 days, H=21.6 ~162m) from Steward Mt. Lemmon Sta. (Nov. 25.15p4)
K20V03J 2020 VJ3 (small asteroid, arc=14 days, H=24.3 ~47m) from Spacewatch 0.9m (Nov. 24.45-47p2) and Spacewatch 1.8m (Nov. 25.21-24p3)
Observations of close-passing objects
K20W03W 2020 WW3 (arc=4 days, H=25.8 ~23m) from the Catalina Sky Survey (CSS) (Nov. 20.37-38p2), Drebach Obs. (Nov. 24.72-74p4), Farra d'Isonzo Obs. (Nov. 24.73-74p2), Salvatore di Giacomo Obs. (Nov. 24.78-79p2), Xingming Obs. #3 (Nov. 24.79p2), and KLENOT/code 1 (Nov. 24.85p7)
K20W02Z 2020 WZ2 (arc=3 days, H=28.1 ~8m, NHATS target) from Steward Mt. Lemmon Sta. (Nov. 25.29p2)
K20W02B 2020 WB2 (Q=4.691 AU, arc=6 days, H=23.4 ~71m) from MLS (Nov. 24.27-29p4) and Steward Mt. Lemmon Sta. (Nov. 25.32-36p4)
K20W00P 2020 WP (arc=9 days, H=24.2 ~49m) from KLENOT/code 1 (Nov. 24.90-91p5) and Steward Mt. Lemmon Sta. (Nov. 25.29-30p4)
K20V06F 2020 VF6 (arc=11 days, H=25.0 ~34m) from KLENOT/code 1 (Nov. 24.86p7)
K17W16J 2017 WJ16 (Q=0.999 AU, arc=2 opp, H=24.5 ~43m, NHATS target) from CSS (Nov. 24.33-35p3) and QOS Obs. (Nov. 24.75p6)
J98S09D 1998 SD9 from UH/Tholen NEO Follow-Up 2.24m Telescope (2018 Sept. 15.24-25p4)
Observation campaigns (NHATS targets, radar support)
K20W03K 2020 WK3 (arc=3 days, H=25.0 ~34m, NHATS) from KLENOT/code 1 (Nov. 24.87-88p7)
K20W03F 2020 WF3 (arc=2 days, H=23.5 ~68m, NHATS) from KLENOT/code 1 (Nov. 21.95p3)
K20W01D 2020 WD1 (arc=9 days, H=23.7 ~62m, NHATS) from Spacewatch 0.9m (Nov. 25.19-22p3)
K20W00Y 2020 WY (arc=9 days, H=26.2 ~19m, NHATS) from Spacewatch 0.9m (Nov. 25.24-28p3) and Steward Mt. Lemmon Sta. (Nov. 25.32p2)
K20V01V 2020 VV1 (arc=20 days, H=25.7 ~25m, NHATS) from Spacewatch 1.8m (Nov. 25.46p3)
K20S00O 2020 SO (NHATS) from MLS (Nov. 16.29-31p4 & 24.13-15p4), Pomona College Table Mtn. Obs. (PCTMO) (Nov. 20.25-29p4), Schiaparelli Obs. (Nov. 21.79-80p3), Northolt Branch Obs. (Nov. 23.90-91p2 & 24.90-92p3), Spacewatch 0.9m (Nov. 24.12-15p3 & 25.19-22p3), CSS (Nov. 25.15-16p3), and Steward Mt. Lemmon Sta. (Nov. 25.25-26p4)
K20M04J 2020 MJ4 (arc=25 days, H=24.0 ~54m, NHATS) from ARO Westfield (July 14.13-14p2 at V=22.1-3)
K15AO5Y 2015 AY245 (arc=2 opp, H=21.2 ~195m, NHATS) from NEOWISE (Nov. 21.12p1, 21.26p1, 21.58p1, 21.65p1, 21.71p1, 21.84p1, 21.97p1, 22.24p2, 22.63p1, 22.76p1 & 23.15p1)
K12H20D 2012 HD20 (arc=3 opp, H=22.2 ~123m, NHATS) from Spacewatch 0.9m (Nov. 25.13-16p2)
K06R01J 2006 RJ1 (arc=4 opp, H=22.2 ~123m, NHATS) from MLS (Nov. 24.16-18p4)
J98V32D 1998 VD32 (arc=2 opp, H=22.7 ~98m, NHATS) from Spacewatch 0.9m (Nov. 25.15-17p2)
-- NHATS target table
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20W03O 2020 WO3 (arc=14 days, H=23.2 ~78m) from KLENOT/code 1 (Nov. 24.91p5)
K20W03J 2020 WJ3 (i=48.9°, arc=3 days, H=23.2 ~78m) from GINOP-KHK (Nov. 23.98-99p6), KLENOT/code 1 (Nov. 24.89-90p4), and Steward Mt. Lemmon Sta. (Nov. 25.18p3)
K20W02M 2020 WM2 (arc=5 days, H=25.1 ~32m) from Steward Mt. Lemmon Sta. (Nov. 25.48p3)
K20W02K 2020 WK2 (arc=5 days, H=23.7 ~62m) from CSS (Nov. 24.16-18p3), Pascoli Obs. (Nov. 24.74-75p3), and Steward Mt. Lemmon Sta. (Nov. 25.20p4)
K20W02C 2020 WC2 (arc=5 days, H=25.0 ~34m) from MLS (Nov. 24.13-15p3)
K20W01H 2020 WH1 (arc=11 days, H=24.6 ~41m) from Steward Mt. Lemmon Sta. (Nov. 25.42-43p3)
K20W00Z 2020 WZ (arc=8 days, H=26.9 ~14m) from Steward Mt. Lemmon Sta. (Nov. 25.29p3)
K20W00X 2020 WX (arc=9 days, H=23.6 ~65m) from Spacewatch 1.8m (Nov. 25.17-19p3 at R=21.7-22.3)
K20W00V 2020 WV (arc=11 days, H=24.0 ~54m) from Steward Mt. Lemmon Sta. (Nov. 25.30-31p4)
K20W00Q 2020 WQ (arc=36 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (Nov. 25.30p4)
K20W00J 2020 WJ (i=43.0°, arc=9 days, H=23.0 ~85m) from Steward Mt. Lemmon Sta. (Nov. 25.16-17p4)
K20V06M 2020 VM6 (arc=12 days, H=22.8 ~93m) from Steward Mt. Lemmon Sta. (Nov. 25.33p4)
K20V06L 2020 VL6 (arc=12 days, H=24.4 ~45m) from ARO Westfield (Nov. 14.34-35p3 at V=21.8-22.2)
K20V06E 2020 VE6 (arc=11 days, H=23.6 ~65m) from Steward Mt. Lemmon Sta. (Nov. 25.32-33p3)
K20V05Y 2020 VY5 (arc=12 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (Nov. 25.43-44p2 at G=21.65-22.37)
K20V05S 2020 VS5 (arc=2 days, H=25.2 ~31m) from ARO Westfield (Nov. 16.14-15p3)
K20V03Z 2020 VZ3 (arc=4 days, H=23.4 ~71m) from ARO Westfield (Nov. 13.01p3 at V=22.0-22.3)
K20V02Y 2020 VY2 (arc=14 days, H=23.9 ~56m) from Steward Mt. Lemmon Sta. (Nov. 25.13-15p2)
K20V01U 2020 VU1 (arc=20 days, H=25.7 ~25m) from Steward Mt. Lemmon Sta. (Nov. 25.40-41p3)
K20V01D 2020 VD1 (arc=22 days, H=24.7 ~39m) from Steward Mt. Lemmon Sta. (Nov. 25.39-40p3)
K20V00E 2020 VE (arc=40 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (Nov. 25.23-24p3)
K20U05Z 2020 UZ5 (arc=32 days, H=22.5 ~107m) from CSS (Nov. 24.12-14p3)
K20T07T 2020 TT7 (arc=42 days, H=22.2 ~123m) from Spacewatch 0.9m (Nov. 25.31-35p3)
K20S01Y 2020 SY1 (Q=4.290 AU, arc=32 days, H=23.5 ~68m) from ARO Westfield (Sept. 18.18-20p3 at V=22.1-2)
K20Q04E 2020 QE4 (arc=98 days, H=23.8 ~59m) from Steward Mt. Lemmon Sta. (Nov. 25.42-43p4)
K20M03W 2020 MW3 (arc=29 days, H=23.4 ~71m) from ARO Westfield (July 13.36-37p3 at V=22.0-22.3)
K20M00C 2020 MC (arc=57 days, H=23.8 ~59m) from ARO Westfield (June 24.21-23p3 at V=22.2-5)
K20K02V 2020 KV2 (arc=5 days, H=25.9 ~22m) from ARO Westfield (May 22.25-26p3)
K20K02B 2020 KB2 (arc=15 days, H=24.6 ~41m) from ARO Westfield (May 31.17-20p3 at V=22.1-2)
K18S03Q 2018 SQ3 (arc=2 opp, H=22.4 ~112m) from ARO Westfield (Sept. 18.32-34p3)
K20U06W 2020 UW6 (q=0.346 AU, arc=27 days, H=21.9 ~141m) from Steward Mt. Lemmon Sta. (Nov. 25.24-25p4)
K20T07Q 2020 TQ7 (arc=67 days, H=22.0 ~135m) from Visnjan Obs. (Nov. 25.16-17p5)
K10X68A 2010 XA68 (i=59.3°, arc=3 opp, H=21.9 ~141m) from Spacewatch 1.8m (Nov. 24.46-47p2)
Observations of other objects
K20W02T 2020 WT2 (arc=5 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (Nov. 25.41p4)
K20W01Z 2020 WZ1 (i=45.2°, arc=8 days, H=20.4 ~282m) from Steward Mt. Lemmon Sta. (Nov. 25.45-46p2)
K20V06Q 2020 VQ6 (arc=10 days, H=21.1 ~204m) from MLS (Nov. 24.27-29p4) and Steward Mt. Lemmon Sta. (Nov. 25.36p1)
K20V01M 2020 VM1 (i=45.1°, arc=17 days, H=20.7 ~245m) from Steward Mt. Lemmon Sta. (Nov. 25.10-11p2)
K20U03U 2020 UU3 (Q=4.967 AU, arc=64 days, H=21.0 ~214m) from Steward Mt. Lemmon Sta. (Nov. 25.11-14p4)
K20T04G 2020 TG4 (Q=4.171 AU, arc=66 days, H=20.1 ~323m) from CSS (Nov. 24.28-30p4) and Oberfrauendorf Obs. (Nov. 24.84p4)
K20O03W 2020 OW3 (Q=4.802 AU, arc=125 days, H=19.6 ~407m) from Pleasant Groves Obs. (Nov. 16.01-04p3)
K20M03Z 2020 MZ3 (Q=4.359 AU, arc=175 days, H=20.0 ~339m) from NEOWISE (Nov. 19.94p1, 20.07p1, 20.20p1, 20.34p1, 20.53p1, 20.60p1, 20.73p1, 20.79p1, 20.92p1, 21.05p1 & 21.18p1)
K20H02V 2020 HV2 (Q=4.893 AU, arc=58 days, H=19.1 ~513m) from ARO Westfield (June 14.13-15p3 at V=22.2-8)
K18G04X 2018 GX4 (arc=4 opp, H=19.2 ~490m) from CSS (Nov. 24.36-37p4)
K17W15A 2017 WA15 (arc=3 opp, H=19.0 ~537m) from Spacewatch 0.9m (Nov. 25.06-11p3)
K17V12T 2017 VT12 (arc=4 opp, H=20.4 ~282m) from CSS (Nov. 24.19-21p3)
K16J34N 2016 JN34 (i=45.2°, arc=3 opp, H=20.4 ~282m) from MLS (Nov. 24.22-23p4)
K16C32B 2016 CB32 (Q=4.713 AU, arc=3 opp, H=18.7 ~616m) from MLS (Nov. 24.44-46p3)
K15KC1X 2015 KX121 (arc=4 opp, H=21.2 ~195m) from ARO Westfield (June 22.35-37p3 at V=22.5-6)
K15B04F 2015 BF4 (arc=6 opp, H=20.4 ~282m) from CSS (Nov. 24.23-26p4)
K14Y15P 2014 YP15 (arc=3 opp, H=19.9 ~355m) from ARO Westfield (Nov. 16.37p3 at V=22.0-22.1)
K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from Ondrejov Obs. (Nov. 15.01-06p3)
K12S22A 2012 SA22 (arc=3 opp, H=18.1 ~812m) from CSS (Nov. 24.33-35p4)
K10W03F 2010 WF3 (arc=4 opp, H=21.1 ~204m) from MLS (Nov. 24.11-13p4)
K09K00K 2009 KK (arc=5 opp, H=20.5 ~269m) from MLS (Nov. 24.21-23p4)
K06Q23S 2006 QS23 (arc=6 opp, H=20.1 ~323m) from ARO Westfield (June 24.26-28p3 at V=22.0-22.1)
K06L01D 2006 LD1 (arc=2 opp, H=20.9 ~224m) from M57 Obs. (Nov. 25.04-09p3)
K05Q10S 2005 QS10 (arc=4 opp, H=18.8 ~589m) from NEOWISE (Nov. 19.77p1, 20.43p1, 20.56p1, 21.08p1, 21.21p1 & 21.34p1)
K04A00C 2004 AC (arc=4 opp, H=18.8 ~589m) from CSS (Nov. 24.40-41p4)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.6 ~645m) from CSS (Nov. 24.33-35p4)
K00T28U 2000 TU28 (arc=3 opp, H=21.0 ~214m) from ARO Westfield (July 14.35-37p3 at V=22.2-9)
J99H01V 1999 HV1 (arc=7 opp, H=17.6 ~1.02 km) from MLS (Nov. 24.25-27p4)
J98W02A 1998 WA2 (Q=4.271 AU, arc=2 opp, H=19.9 ~355m) from MLS (Nov. 24.19-21p4)
l7051 477051 2009 BD2 from ARO Westfield (June 22.32-33p3 at V=22.1-3 & 24.31-32p3 at V=22.4-8)
l4179 474179 1999 VS6 from CSS (Nov. 24.08-09p4)
j0648 450648 2006 UC63 from ARO Westfield (June 25.35-37p2 at V=22.2)
h4344 434344 2004 RV10 from ARO Westfield (June 22.24-27p3 at V=22.3-6 & 24.24-26p2 at V=22.4-6)
g8086 428086 2006 NM from CSS (Nov. 24.21-22p4)
f5029 415029 2011 UL21 from CSS (Nov. 24.35-37p4)
c0929 380929 2006 HU30 from CSS (Nov. 24.17-18p4)
c0359 380359 2002 TN30 from CSS (Nov. 24.44-46p4)
V5098 315098 2007 EX from ZTF (Nov. 22.55p2 & 24.54-56p3)
O1596 241596 1998 XM2 from MLS (Nov. 24.33-35p4)
H3664 173664 2001 JU2 from ARO Westfield (Nov. 16.41-42p3 at V=22.0-22.2)
G3902 163902 2003 SW222 from CSS (Nov. 24.33-35p4)
F9402 159402 1999 AP10 from CSS (Nov. 24.46-48p4) and program code 1 via Kuban State Univ. Obs. (Nov. 24.95-04p33)
E4411 144411 2004 EW9 from CSS (Nov. 24.19-20p4)
E3649 143649 2003 QQ47 from ZTF (Nov. 22.55p1 & 24.54-56p4)
D8947 138947 2001 BA40 from CSS (Nov. 24.36-37p4)
D8175 138175 2000 EE104 from CSS (Nov. 24.44-46p4)
D7062 137062 1998 WM from ZTF (Nov. 24.54-56p4)
89355 89355 2001 VS78 from MLS (Nov. 24.40-42p4)
88188 88188 2000 XH44 from CSS (Nov. 24.37-39p4)
85867 85867 1999 BY9 from MLS (Nov. 24.11-13p4)
85275 85275 1994 LY from Campo dos Amarais Obs. (Nov. 24.04-06p3)
53435 53435 1999 VM40 from Southern Utsunomiya (Nov. 21.80p2) and CSS (Nov. 24.40-42p4)
52761 52761 1998 MN14 from MLS (Nov. 24.40-42p4)
36284 36284 2000 DM8 from CSS (Nov. 24.08-09p4) and HOB Obs. (Nov. 24.87-88p2)
31669 31669 1999 JT6 from ZTF (Nov. 22.55p2 & 24.54-56p3)
21374 21374 1997 WS22 from CSS (Nov. 24.40-42p3)
16834 16834 1997 WU22 from CSS (Nov. 24.22-23p3)
04486 4486 Mithra (1987 SB) from MLS (Nov. 24.11-12p4)
04055 4055 Magellan (1985 DO2) from SATINO-1 (Sept. 4.13-14p6)
03360 3360 Syrinx (1981 VA) from MLS (Nov. 24.33-35p4)
01580 1580 Betulia (1950 KA) from CSS (Nov. 24.28-30p4)

MPEC 2020-W150 - "01:26 UT" - 2020 WH4

K20W04H 2020 WH4 (small asteroid, Q=4.534 AU, H=25.0 ~34m) was picked up at 0754 UT on 23 Nov. by MLS, observing it at Nov. 14.29-31p2 and 23.33-34p4. This detection was confirmed by CSS-Kuiper (Nov. 23.36-40p5 & 23.45p3), Steward Mt. Lemmon Sta. (Nov. 24.22-23p3), and Visnjan Obs. (Nov. 24.99-00p3).

MPEC 2020-W149 - "01:17 UT" - 2006 LD1

K06L01D 2006 LD1 (Earth MOID=6.7 LD, H=20.9 ~224m) from CSS (Nov. 10.51p2 & 19.38-39p3), MLS (Nov. 23.49-51p4), CSS-Kuiper (Nov. 23.54p4), Steward Mt. Lemmon Sta. (Nov. 24.38p4), Visnjan Obs. (Nov. 24.93-94p5), and KLENOT/code 1 (Nov. 24.98p6)

MPEC 2020-W148 - "00:25 UT" - 2020 SK18

K20S18K 2020 SK18 (H=20.4 ~282m) was picked up at 1055 UT on 26 Sept. by MLS, observing it at Sept. 26.45-47p4, Oct. 14.38-39p4, 29.36-37p2, Nov. 11.35-36p4, and 23.35-37p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Nov. 23.39-40p3 & 23.48p2), Visnjan Obs. (Nov. 24.07-11p3), and KLENOT/code 1 (Nov. 24.92p4).

Observers on 25 November '20

A total of 49 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 21 in MPECs 2020-W151 & 2020-W153 -- 2020 WN4, 2020 WN, 2020 VZ3, 2020 VS5, 2020 VL6, 2020 SY1, 2020 MW3, 2020 MJ4, 2020 MC, 2020 KV2, 2020 KB2, 2020 HV2, 2018 SQ3, 2015 KX121, 2014 YP15, 2006 QS23, 2000 TU28, 477051, 450648, 434344, 173664
`T05`	ATLAS Haleakala in Hawaii, 1 in MPEC 2020-W155 -- 2020 WP4
`T08`	ATLAS Mauna Loa in Hawaii, 1 in MPEC 2020-W155 -- 2020 WP4
`X74`	Campo dos Amarais Obs., 1 in MPEC 2020-W151 -- 85275
`703`	Catalina Sky Survey (CSS) in Arizona, 29 in MPECs 2020-W149 & 2020-W151 -- 2020 WW3, 2020 WK2, 2020 UZ5, 2020 TG4, 2020 SO, 2018 GX4, 2017 WJ16, 2017 VT12, 2015 BF4, 2012 SA22, 2006 LD1, 2004 AC, 2002 GZ8, 88188, 53435, 474179, 428086, 415029, 380929, 380359, 36284, 21374, 16834, 163902, 159402, 144411, 138947, 138175, 1580
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 3 in MPECs 2020-W149, 2020-W150 & 2020-W153 -- 2020 WN4, 2020 WH4, 2006 LD1
`470`	Ceccano Obs. in Italy, 1 in MPEC 2020-W155 -- 2020 WP4
`Z99`	Clixby Obs. in England, 2 in MPECs 2020-W155 & 2020-W158 -- 2020 WQ4, 2020 WP4
`G37#`	program code "#" (12) via Discovery Channel Telescope in Arizona, 1 in MPEC 2020-W151 -- 2020 VV
`G375`	program code 5 via Discovery Channel Telescope (DCT) in Arizona, 11 in MPEC 2020-W151 -- 2020 VW, 2020 VV, 2020 VU2, 2020 VA4, 2020 UQ3, 2020 UO4, 2020 UE, 2020 TZ3, 2020 TY4, 2020 SP6, 2020 QN1
`113`	Drebach Obs. in Germany, 2 in MPECs 2020-W151 & 2020-W155 -- 2020 WW3, 2020 WP4
`595`	Farra d'Isonzo Obs. in Italy, 3 in MPECs 2020-W151, 2020-W155 & 2020-W158 -- 2020 WW3, 2020 WQ4, 2020 WP4
`203`	GiaGa Obs. in Italy, 2 in MPECs 2020-W155 & 2020-W158 -- 2020 WQ4, 2020 WP4
`K88`	GINOP-KHK in Hungary, 2 in MPECs 2020-W151 & 2020-W155 -- 2020 WP4, 2020 WJ3
`J95`	Great Shefford Obs. in England, 3 in MPECs 2020-W155, 2020-W158 & 2020-W161 -- 2020 WT4, 2020 WQ4, 2020 WP4
`L63`	HOB Obs., 1 in MPEC 2020-W151 -- 36284
`2461`	program code 1 via KLENOT in the Czech Republic, 16 in MPECs 2020-W148, 2020-W149, 2020-W151, 2020-W155, 2020-W158, 2020-W159, 2020-W160, 2020-W161 & 2020-W162 -- 2020 WW3, 2020 WU4, 2020 WT4, 2020 WS4, 2020 WS2, 2020 WR4, 2020 WQ4, 2020 WP4, 2020 WP, 2020 WO3, 2020 WK3, 2020 WJ3, 2020 WF3, 2020 VF6, 2020 SK18, 2006 LD1
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-W151 -- 159402
`V37`	LCO McDonald Obs. in Texas, 1 in MPEC 2020-W151 -- 2020 WB3
`K38`	M57 Obs. in Italy, 2 in MPECs 2020-W151 & 2020-W155 -- 2020 WP4, 2006 LD1
`V01`	Mountainville Obs. in Utah, 1 in MPEC 2020-W155 -- 2020 WP4
`L16`	MPC code L16, 1 in MPEC 2020-W155 -- 2020 WP4
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 29 in MPECs 2020-W148, 2020-W149, 2020-W150, 2020-W151, 2020-W152, 2020-W153, 2020-W158, 2020-W159, 2020-W160, 2020-W161, 2020-W162 & 2020-W163 -- 2020 WV4, 2020 WU4, 2020 WT4, 2020 WS4, 2020 WR4, 2020 WQ4, 2020 WN4, 2020 WJ4, 2020 WH4, 2020 WC2, 2020 WB2, 2020 VV, 2020 VQ6, 2020 SO, 2020 SK18, 2016 JN34, 2016 CB32, 2010 WF3, 2009 KK, 2006 RJ1, 2006 LD1, 1999 HV1, 1998 WA2, 89355, 85867, 52761, 241596, 4486, 3360
`675@`	program code "@" (41) via Mt. Palomar in southern California, 1 in MPEC 2020-W156 -- 2020 AV2
`C82`	Nastro Verde Obs. in Italy, 1 in MPEC 2020-W155 -- 2020 WP4
`C51`	NEOWISE in Earth polar orbit, 3 in MPEC 2020-W151 -- 2020 MZ3, 2015 AY245, 2005 QS10
`Z80`	Northolt Branch Obs. in England, 2 in MPECs 2020-W151 & 2020-W155 -- 2020 WP4, 2020 SO
`G34`	Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-W151 -- 2020 TG4
`557`	Ondrejov Obs. in the Czech Republic, 1 in MPEC 2020-W151 -- 2013 PY6
`F51`	Pan-STARRS 1 in Hawaii, 1 in MPEC 2020-W157 -- 2009 WG104
`F52`	Pan-STARRS 2 in Hawaii, 1 in MPEC 2020-W157 -- 2009 WG104
`K63`	Pascoli Obs. in Italy, 3 in MPECs 2020-W151, 2020-W155 & 2020-W158 -- 2020 WQ4, 2020 WP4, 2020 WK2
`W16`	Pleasant Groves Obs., 1 in MPEC 2020-W151 -- 2020 OW3
`654`	Pomona College Table Mtn. Obs. in southern California, 1 in MPEC 2020-W151 -- 2020 SO
`L18`	QOS Obs., 1 in MPEC 2020-W151 -- 2017 WJ16
`L07`	Salvatore di Giacomo Obs., 2 in MPECs 2020-W151 & 2020-W155 -- 2020 WW3, 2020 WP4
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2020-W153 -- 2020 WN4
`C95`	SATINO-1 in France, 1 in MPEC 2020-W151 -- 4055
`204`	Schiaparelli Obs. in Italy, 4 in MPECs 2020-W151, 2020-W155, 2020-W159 & 2020-W160 -- 2020 WS4, 2020 WR4, 2020 WP4, 2020 SO
`Q21`	Southern Utsunomiya in Japan, 1 in MPEC 2020-W151 -- 53435
`691`	Spacewatch 0.9m telescope in Arizona, 11 in MPECs 2020-W151, 2020-W152 & 2020-W159 -- 2020 WZ3, 2020 WY, 2020 WR4, 2020 WJ4, 2020 WD1, 2020 VJ3, 2020 TT7, 2020 SO, 2017 WA15, 2012 HD20, 1998 VD32
`291`	Spacewatch 1.8m telescope in Arizona, 9 in MPEC 2020-W151 -- 2020 WX, 2020 WE1, 2020 WD, 2020 WB3, 2020 VV1, 2020 VN1, 2020 VK6, 2020 VJ3, 2010 XA68
`L39`	Spica Obs., 1 in MPEC 2020-W155 -- 2020 WP4
`W34`	Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-W155 -- 2020 WP4
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 41 in MPECs 2020-W148, 2020-W149, 2020-W150, 2020-W151, 2020-W152, 2020-W153, 2020-W158, 2020-W159, 2020-W160, 2020-W161, 2020-W162 & 2020-W163 -- 2020 WZ2, 2020 WZ1, 2020 WZ, 2020 WY, 2020 WV4, 2020 WV, 2020 WU4, 2020 WT4, 2020 WT2, 2020 WS4, 2020 WR4, 2020 WQ4, 2020 WQ, 2020 WP, 2020 WN4, 2020 WM2, 2020 WK2, 2020 WJ4, 2020 WJ3, 2020 WJ, 2020 WH4, 2020 WH1, 2020 WG, 2020 WE1, 2020 WB3, 2020 WB2, 2020 VY5, 2020 VY2, 2020 VU1, 2020 VQ6, 2020 VM6, 2020 VM1, 2020 VE6, 2020 VE, 2020 VD1, 2020 UW6, 2020 UU3, 2020 SO, 2020 SK18, 2020 QE4, 2006 LD1
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-W151 -- 1998 SD9
`L01`	Visnjan Obs. in Croatia, 14 in MPECs 2020-W148, 2020-W149, 2020-W150, 2020-W151, 2020-W152, 2020-W153, 2020-W155, 2020-W157, 2020-W158, 2020-W159, 2020-W160, 2020-W161, 2020-W162 & 2020-W163 -- 2020 WV4, 2020 WU4, 2020 WT4, 2020 WS4, 2020 WR4, 2020 WQ4, 2020 WP4, 2020 WN4, 2020 WJ4, 2020 WH4, 2020 TQ7, 2020 SK18, 2009 WG104, 2006 LD1
`718`	Wiggins Obs. in Utah, 1 in MPEC 2020-W155 -- 2020 WP4
`N88`	Xingming Obs. #3, 3 in MPECs 2020-W151, 2020-W155 & 2020-W156 -- 2020 WW3, 2020 WP4, 2020 AV2
`I41`	Zwicky Transient Facility (ZTF) in southern California, 5 in MPECs 2020-W151 & 2020-W157 -- 2009 WG104, 31669, 315098, 143649, 137062

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

Impact Risk Monitoring on 25 November '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 WZ3	NEODyS	2131	2101-2120	14	1.02e-05	-5.96	-6.3	n/a	NEODyS #2 for the day: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2020-11-23.353 to 2020-11-25.274."
2020 WZ3	JPL Sentry	1700	2088-2119	19	1.56021056e-05	-5.77	-6.12	0	JPL: Computed at 06:29 today Pacific time based on 21 observations spanning 1.9205 days (2020-Nov-23.352624 to 2020-Nov-25.27312). Diameter approximately 0.020 km. from weighted mean H=26.12.

2020 WB3	NEODyS	2131	2024-2116	10	1.28e-06	-2.48	-2.48	0	NEODyS: "Based on 53 optical observations (of which 2 are rejected as outliers) from 2020-11-21.062 to 2020-11-25.081."
2020 WB3	JPL Sentry	1730	2024-2103	6	1.8691541e-06	-2.34	-2.34	0	JPL: Computed at 09:28 today Pacific time based on 51 observations spanning 4.0197 days (2020-Nov-21.060876 to 2020-Nov-25.0806). Diameter approximately 0.280 km. from weighted mean H=20.38.

2020 WE1	NEODyS	2131	R E M O V E D						-
2020 WE1	JPL Sentry	1700	R E M O V E D						JPL: Risk listing removed at 1444 UTC today

2020 WD	NEODyS	2131	2055-2103	6	4.23e-05	-6.25	-6.48	0	NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2020-11-16.345 to 2020-11-25.441."
2020 WD	JPL Sentry	1700	2085-2103	3	3.231532e-05	-6.38	-6.67	0	JPL: Computed at 06:47 today Pacific time based on 31 observations spanning 9.0953 days (2020-Nov-16.344565 to 2020-Nov-25.43988). Diameter approximately 0.008 km. from weighted mean H=28.20.

2020 VK6	NEODyS	2131	2090-2111	5	1.07e-05	-5.52	-5.66	0	NEODyS: "Based on 89 optical observations (of which 0 are rejected as outliers) from 2020-11-12.476 to 2020-11-25.299."
2020 VK6	JPL Sentry	1700	2090-2113	5	8.811901e-06	-5.60	-5.83	0	JPL: Computed at 06:43 today Pacific time based on 89 observations spanning 12.823 days (2020-Nov-12.475059 to 2020-Nov-25.29852). Diameter approximately 0.026 km. from weighted mean H=25.57.

2020 VA4	NEODyS	2131	2096-2120	12	5.39e-06	-6.87	-7.18	n/a	NEODyS: "Based on 63 optical observations (of which 3 are rejected as outliers) from 2020-11-12.283 to 2020-11-23.219."
2020 VA4	JPL Sentry	1831	2096-2114	3	1.4781e-06	-7.44	-7.70	0	JPL #2 for the day: Computed at 10:08 today Pacific time based on 60 observations spanning 10.936 days (2020-Nov-12.282205 to 2020-Nov-23.218131). Diameter approximately 0.011 km. from weighted mean H=27.40.

2020 VU2	NEODyS	2131	R E M O V E D						-
2020 VU2	JPL Sentry	1700	R E M O V E D						JPL: Risk listing removed at 1403 UTC today

2020 VN1	NEODyS	2131	2105-2120	20	5.22e-04	-5.19	-5.49	n/a	NEODyS: "Based on 137 optical observations (of which 1 are rejected as outliers) from 2020-11-08.220 to 2020-11-25.372."
2020 VN1	JPL Sentry	1700	2082-2116	17	0.00052421959	-5.18	-5.42	0	JPL: Computed at 06:30 today Pacific time based on 136 observations spanning 17.152 days (2020-Nov-08.218906 to 2020-Nov-25.37096). Diameter approximately 0.009 km. from weighted mean H=27.87.

2020 VW	NEODyS	2131	2064-2088	43	4.72e-03	-4.05	-4.35	0	NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2020-11-05.170 to 2020-11-18.204."
2020 VW	JPL Sentry	1831	2064-2087	27	0.004078543032	-4.09	-4.38	0	JPL #2 for the day: Computed at 10:13 today Pacific time based on 16 observations spanning 13.034 days (2020-Nov-05.169443 to 2020-Nov-18.203395). Diameter approximately 0.007 km. from weighted mean H=28.33.

2020 VV	NEODyS	2131	2033-2120	838	4.58e-03	-3.33	-3.61	n/a	NEODyS: "Based on 74 optical observations (of which 1 are rejected as outliers) from 2020-11-05.149 to 2020-11-23.133."
2020 VV	JPL Sentry	1831	2033-2099	244	0.0071626662797	-2.96	-3.02	0	JPL #2 for the day: Computed at 10:16 today Pacific time based on 74 observations spanning 17.984 days (2020-Nov-05.148108 to 2020-Nov-23.13216). Diameter approximately 0.012 km. from weighted mean H=27.27.

2020 UO4	NEODyS	2131	2088-2120	64	5.91e-04	-5.25	-5.35	n/a	NEODyS: "Based on 69 optical observations (of which 4 are rejected as outliers) from 2020-07-27.852 to 2020-11-18.124."
2020 UO4	JPL Sentry	1831	2088-2120	39	0.00046617647	-5.53	-5.70	0	JPL #2 for the day: Computed at 10:12 today Pacific time based on 66 observations spanning 25.769 days (2020-Oct-23.354363 to 2020-Nov-18.123526). Diameter approximately 0.006 km. from weighted mean H=28.60.

2020 UQ3	NEODyS	2131	2112	1	3.77e-06	-5.25	-5.25	0	NEODyS: "Based on 31 optical observations (of which 2 are rejected as outliers) from 2020-10-13.436 to 2020-11-18.135."
2020 UQ3	JPL Sentry	1831	2112-2112	1	1.717e-06	-5.56	-5.56	0	JPL #2 for the day: Computed at 10:00 today Pacific time based on 28 observations spanning 35.699 days (2020-Oct-13.435266 to 2020-Nov-18.134131). Diameter approximately 0.059 km. from weighted mean H=23.80.

2020 UE	NEODyS	2131	2042-2120	49	3.58e-05	-4.67	-5.17	n/a	NEODyS: "Based on 132 optical observations (of which 0 are rejected as outliers) from 2020-10-15.470 to 2020-11-18.160."
2020 UE	JPL Sentry	1831	2042-2120	19	3.0108183e-05	-4.70	-5.14	0	JPL #2 for the day: Computed at 10:08 today Pacific time based on 132 observations spanning 33.690 days (2020-Oct-15.46967 to 2020-Nov-18.159326). Diameter approximately 0.026 km. from weighted mean H=25.53.

2020 TY4	NEODyS	2131	2099	3	3.74e-05	-4.26	-4.27	0	NEODyS: "Based on 60 optical observations (of which 0 are rejected as outliers) from 2020-10-13.139 to 2020-11-18.092."
2020 TY4	JPL Sentry	1831	2099-2099	2	2.87568e-05	-4.36	-4.36	0	JPL #2 for the day: Computed at 10:00 today Pacific time based on 60 observations spanning 35.953 days (2020-Oct-13.13828 to 2020-Nov-18.09118). Diameter approximately 0.054 km. from weighted mean H=23.99.

2020 TZ3	NEODyS	2131	2072-2105	2	1.94e-07	-6.73	-6.73	0	NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2020-09-30.304 to 2020-11-18.112."
2020 TZ3	JPL Sentry	1831	2072-2072	1	4.501e-08	-7.33	-7.33	0	JPL #2 for the day: Computed at 10:20 today Pacific time based on 31 observations spanning 48.808 days (2020-Sep-30.30293 to 2020-Nov-18.110928). Diameter approximately 0.037 km. from weighted mean H=24.78.

2020 SP6	NEODyS	2131	R E M O V E D						-

2020 QN1	NEODyS	2131	2100-2120	7	1.13e-07	-6.47	-6.93	n/a	NEODyS: "Based on 61 optical observations (of which 0 are rejected as outliers) from 2020-07-31.389 to 2020-11-18.068."

2018 WH1	JPL Sentry	1700	2076-2111	13	9.92179e-06	-7.16	-7.74	0	JPL: Computed at 07:44 March 18th of 2019 Pacific time based on 70 observations spanning 16.066 days (2018-Nov-27.25828 to 2018-Dec-13.323814). Diameter approximately 0.007 km. from weighted mean H=28.53.

2017 WY27	JPL Sentry	1700	2045-2116	13	2.1158327e-06	-7.40	-8.02	0	JPL: Computed at 13:13 Nov. 28th of 2017 Pacific time based on 32 observations spanning 2.0049 days (2017-Nov-26.23874 to 2017-Nov-28.24368). Diameter approximately 0.009 km. from weighted mean H=27.89.

2008 XU2	JPL Sentry	1700	2039-2039	1	4.756e-07	-6.23	-6.23	0	JPL: Computed at 08:06 April 10th of 2017 Pacific time based on 44 observations spanning 27.997 days (2008-Dec-06.2616 to 2009-Jan-03.258608). Diameter approximately 0.026 km. from weighted mean H=25.56.

2006 WZ184	JPL Sentry	1700	2084-2114	25	9.30518e-06	-5.90	-6.69	0	JPL: Computed at 16:31 April 8th of 2017 Pacific time based on 37 observations spanning 27.263 days (2006-Nov-28.1926 to 2006-Dec-25.455494). Diameter approximately 0.021 km. from weighted mean H=26.05.

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 25 November '20

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

2358	Grabbed MPEC 2020-W158 - 2020 WQ4 - see above Grabbed MPEC 2020-W159 - 2020 WR4 - see above Grabbed MPEC 2020-W160 - 2020 WS4 - see above Grabbed MPEC 2020-W161 - 2020 WT4 - see above Grabbed MPEC 2020-W162 - 2020 WU4 - see above Grabbed MPEC 2020-W163 - 2020 WV4 - see above
2309	Grabbed MPEC 2020-W157 - 2009 WG104 - see above
2131	Noted that NEODyS has updated its 2020 QN1 risk assessment - see above Noted that NEODyS has removed 2020 SP6 as an impact risk - see above Noted that NEODyS has updated its 2020 TY4 risk assessment - see above Noted that NEODyS has updated its 2020 TZ3 risk assessment - see above Noted that NEODyS has updated its 2020 UE risk assessment - see above Noted that NEODyS has updated its 2020 UO4 risk assessment - see above Noted that NEODyS has updated its 2020 UQ3 risk assessment - see above Noted that NEODyS has updated its 2020 VA4 risk assessment - see above Noted that NEODyS has updated its 2020 VK6 risk assessment - see above Noted that NEODyS has updated its 2020 VN1 risk assessment - see above Noted that NEODyS has removed 2020 VU2 as an impact risk - see above Noted that NEODyS has updated its 2020 VV risk assessment - see above Noted that NEODyS has updated its 2020 VW risk assessment - see above Noted that NEODyS has updated its 2020 WB3 risk assessment - see above Noted that NEODyS has updated its 2020 WD risk assessment - see above Noted that NEODyS has removed 2020 WE1 as an impact risk - see above Noted that NEODyS has updated its 2020 WZ3 risk assessment - see above Grabbed MPEC 2020-W156 - 2020 AV2 - see above
2006	Grabbed MPEC 2020-W154 - 2020 UG7 = 2003 WC46 - see above Grabbed MPEC 2020-W155 - 2020 WP4 - see above
1831	Noted that JPL Sentry has updated its 2020 TY4 risk assessment - see above Noted that JPL Sentry has updated its 2020 TZ3 risk assessment - see above Noted that JPL Sentry has updated its 2020 UE risk assessment - see above Noted that JPL Sentry has updated its 2020 UO4 risk assessment - see above Noted that JPL Sentry has updated its 2020 UQ3 risk assessment - see above Noted that JPL Sentry has updated its 2020 VA4 risk assessment - see above Noted that JPL Sentry has updated its 2020 VV risk assessment - see above Noted that JPL Sentry has updated its 2020 VW risk assessment - see above
1730	Noted that JPL Sentry has updated its 2020 WB3 risk assessment - see above
1700	Noted that JPL Sentry has updated its 2006 WZ184 risk assessment - see above Noted that JPL Sentry has updated its 2008 XU2 risk assessment - see above Noted that JPL Sentry has updated its 2017 WY27 risk assessment - see above Noted that JPL Sentry has updated its 2018 WH1 risk assessment - see above Noted that JPL Sentry has updated its 2020 TY4 risk assessment - see above Noted that JPL Sentry has updated its 2020 TZ3 risk assessment - see above Noted that JPL Sentry has updated its 2020 UE risk assessment - see above Noted that JPL Sentry has updated its 2020 UO4 risk assessment - see above Noted that JPL Sentry has updated its 2020 UQ3 risk assessment - see above Noted that JPL Sentry has updated its 2020 VA4 risk assessment - see above Noted that JPL Sentry has updated its 2020 VK6 risk assessment - see above Noted that JPL Sentry has updated its 2020 VN1 risk assessment - see above Noted that JPL Sentry has removed 2020 VU2 as an impact risk - see above Noted that JPL Sentry has updated its 2020 VV risk assessment - see above Noted that JPL Sentry has updated its 2020 VW risk assessment - see above Noted that JPL Sentry has updated its 2020 WD risk assessment - see above Noted that JPL Sentry has removed 2020 WE1 as an impact risk - see above Noted that JPL Sentry has updated its 2020 WZ3 risk assessment - see above Noted that NEODyS has posted 2020 WZ3 as an impact risk - see above Grabbed MPEC 2020-W151 - Daily Orbit Update - see above Grabbed MPEC 2020-W152 - 2020 WJ4 - see above Grabbed MPEC 2020-W153 - 2020 WN4 - see above
0559	Grabbed MPEC 2020-W148 - 2020 SK18 - see above Grabbed MPEC 2020-W149 - 2006 LD1 - see above Grabbed MPEC 2020-W150 - 2020 WH4 - see above

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