2020-10-22 Tracking News

Contents on 22 October '20

IAU Minor Planet Center
- NEOCP Activity -- 67 listings
- New MPECs -- fifteen MPECs
Observers -- 41 observers
Impact Risk Monitoring -- 20 objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1204 risk-listed objects, 194 have had news in the last 31 days. Updated at 1830 UTC on 22 Oct.
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 22 October '20

The MPC's NEO Confirmation Page has 67 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 67 objects listed. Of these, 45 were "one nighters." So far The Tracking News has counted a total of 86 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 22 October '20

Minor Planet Electronic Circulars

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

MPEC 2020-U167 time-stamped "00:04 UT" - 1998 VD32 = 2020 SS7 - see below
MPEC 2020-U168 time-stamped "00:21 UT" - 2020 UO3 - see below
MPEC 2020-U169 time-stamped "02:04 UT" - Comet P/2007 VQ11 = 2020 T1 (Catalina) - see below
MPEC 2020-U170 time-stamped "03:59 UT" - Comet C/2020 T2 (Palomar) - see below
MPEC 2020-U171 time-stamped "06:47 UT" - 2020 UP3 - see below
MPEC 2020-U172 time-stamped "10:41 UT" - 2020 UQ3 - see below
MPEC 2020-U173 time-stamped "10:42 UT" - 2020 UR3 - see below
MPEC 2020-U174 time-stamped "10:43 UT" - 2020 US3 - see below
MPEC 2020-U175 time-stamped "10:45 UT" - 2020 UT3 - see below
MPEC 2020-U176 time-stamped "12:48 UT" - Daily Orbit Update - see below
MPEC 2020-U177 time-stamped "16:23 UT" - 2016 RW - see below
MPEC 2020-U178 time-stamped "17:42 UT" - 2020 UF3 - see below
MPEC 2020-U179 time-stamped "22:11 UT" - 2020 UU3 - see below
MPEC 2020-U180 time-stamped "22:12 UT" - 2020 UV3 - see below
MPEC 2020-U181 time-stamped "22:14 UT" - 2020 TB9

MPEC 2020-U181 - "22:14 UT" - 2020 TB9

K20T09B 2020 TB9 (small asteroid, Earth MOID=5.6 LD, H=25.7 ~25m) was picked up at 1215 UT on 14 Oct. by Pan-STARRS 1 (PS1), observing it at Oct. 14.51-55p3 at w=22.25-57, 16.54-57p2 at G=21.97-22.11, 20.48-51p3 at w=21.87-22.36, and 22.40-44p4 at w=21.99-22.28. This detection was confirmed by Pan-STARRS 2 (PS2) (Oct. 20.51p1).

MPEC 2020-U180 - "22:12 UT" - 2020 UV3

K20U03V 2020 UV3 (small asteroid, H=22.9 ~89m) was picked up at 1151 UT on 20 Oct. by PS1, observing it at Oct. 20.49-52p3 at w=21.53-68, 21.42-43p2 at G=21.70, and 22.40-43p3 at w=21.95-22.28. This detection was confirmed by PS2 (Oct. 15.51-55p4 & 17.43-46p3) and the Mt. Lemmon Survey (MLS) (Oct. 20.32-33p2).

MPEC 2020-U179 - "22:11 UT" - 2020 UU3

K20U03U 2020 UU3 (Q=4.970 AU, H=21.0 ~214m) was picked up at 0531 UT on 21 Oct. by PS1, observing it at Oct. 21.23-25p3 and 22.40-42p3. This detection was confirmed by PS2 (Sept. 22.45-49p4, Oct. 10.27-30p4 & 16.43-45p3) and MLS (Oct. 15.17-18p4 at G=21.8-22.5).

MPEC 2020-U178 - "17:42 UT" - 2020 UF3

K20U03F 2020 UF3 (Earth MOID=0.0 LD, H=28.38 ~7m) from ATLAS Mauna Loa (Oct. 22.45-47p4 & 22.54-55p5) and ATLAS Haleakala (Oct. 22.54-55p5)

MPEC 2020-U177 - "16:23 UT" - 2016 RW

K16R00W 2016 RW (small asteroid, Earth MOID=6.0 LD, H=23.2 ~78m) from the Spacewatch 1.8m telescope (2018 Dec. 13.16-18p2 & 2018 Dec. 14.07-09p3 at R=22.3-5)

<< DOU on 22 October '20 >> MPEC 2020-U176 - "12:48 UT" - Daily Orbit Update

Observations of risk-listed objects
K20U02K 2020 UK2 (small asteroid, arc=4 days, H=27.0 ~13m, close passer) from Steward Obs. Mt. Lemmon Station (Oct. 22.43p2)
K20U00J 2020 UJ (small asteroid, arc=12 days, H=24.1 ~51m) from Steward Mt. Lemmon Sta. (Oct. 22.12p4)
K20U00H 2020 UH (small asteroid, arc=7 days, H=24.5 ~43m) from Steward Mt. Lemmon Sta. (Oct. 22.13p4)
K20U00E 2020 UE (small asteroid, arc=7 days, H=25.6 ~26m, close passer) from Steward Mt. Lemmon Sta. (Oct. 22.13-14p4)
K20U00A 2020 UA (close passer, NHATS target) from Berthelot Obs. (Oct. 20.93-97p18)
K20T08D 2020 TD8 (small asteroid, arc=7 days, H=27.0 ~13m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (Oct. 22.25p4) and PS2 (Oct. 22.28-30p4)
K20T05K 2020 TK5 (small asteroid, q=0.349 AU, arc=8 days, H=23.6 ~65m) from Steward Mt. Lemmon Sta. (Oct. 22.20p4)
K20T04Y 2020 TY4 (small asteroid, arc=9 days, H=24.0 ~54m) from Steward Mt. Lemmon Sta. (Oct. 22.16-19p3)
K20T04S 2020 TS4 (small asteroid, arc=8 days, H=27.9 ~9m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (Oct. 22.31-32p3 & 22.43p1)
K20T03J 2020 TJ3 (small asteroid, arc=11 days, H=24.6 ~41m, NHATS target) from Steward Mt. Lemmon Sta. (Oct. 22.14-15p4)
K20T01Y 2020 TY1 (small asteroid, arc=13 days, H=22.6 ~102m) from Mountainville Obs. (Oct. 21.36-44p3)
K20R04R 2020 RR4 (small asteroid, Q=4.419 AU, arc=35 days, H=25.9 ~22m, close passer) from UH/Tholen NEO Follow-Up 2.24m Telescope (Oct. 14.55p1 at G=25.77)
K18X02Q 2018 XQ2 (small asteroid, arc=28 days, H=28.2 ~8m, close passer, NHATS target) from Spacewatch 1.8m (2018 Dec. 15.16p2)
Observations of recently (no longer) risk-listed objects
K20T03U 2020 TU3 (small asteroid, arc=7 days, H=23.6 ~65m) from iTelescope Obs. Mayhill (Oct. 18.32-40p3)
K20T02R 2020 TR2 (small asteroid, Q=4.225 AU, arc=12 days, H=24.0 ~54m, close passer) from the Zwicky Transient Facility (ZTF) (Oct. 19.35p1) and MLS (Oct. 21.31-32p4)
K20S00W 2020 SW (close passer, NHATS target) from Hidetaka Sato via iTelescope Obs. Mayhill (Sept. 23.29-30p4)
Observations of close-passing objects
K20U02Y 2020 UY2 (arc=2 days, H=27.2 ~12m) from Steward Mt. Lemmon Sta. (Oct. 22.13p4)
K20U01A 2020 UA1 from Steward Mt. Lemmon Sta. (Oct. 22.25-30p4)
K20U00V 2020 UV (arc=4 days, H=27.3 ~12m) from Castelmartini Obs. (Oct. 20.91p2)
K20U00G 2020 UG (arc=6 days, H=26.6 ~16m) from Steward Mt. Lemmon Sta. (Oct. 22.11p4)
K20T06M 2020 TM6 (arc=10 days, H=26.1 ~20m, NHATS target) from MLS (Oct. 21.28-30p2)
K20T05T 2020 TT5 (arc=11 days, H=27.0 ~13m, NHATS target) from Steward Mt. Lemmon Sta. (Oct. 22.13p4)
K20T04K 2020 TK4 (arc=10 days, H=26.4 ~18m, NHATS target) from Steward Mt. Lemmon Sta. (Oct. 22.20-21p4)
K20R00J 2020 RJ (arc=5 days, H=26.0 ~21m) from N.V. Maigurova via Nikolaev Obs. (Sept. 8.89-91p6 & 8.99p1)
K20P04T 2020 PT4 (arc=25 days, H=24.8 ~37m) from Maigurova/Nikolaev Obs. (Sept. 6.95-97p4)
K18U01Q 2018 UQ1 (arc=3 opp, H=21.9 ~141m) from PS1 (Oct. 21.33-37p3)
K18S01M 2018 SM1 from Spacewatch 1.8m (2018 Dec. 16.46-47p2)
K17U05H 2017 UH5 (arc=2 opp, H=26.5 ~17m, NHATS target) from Steward Mt. Lemmon Sta. (Oct. 21.34p4)
c8945 388945 2008 TZ3 from MLS (Oct. 21.20-22p4)
Observation campaigns (NHATS targets, radar support)
K20U02M 2020 UM2 (arc=3 days, H=27.1 ~13m, NHATS) from Steward Mt. Lemmon Sta. (Oct. 22.30-31p4)
K20U02F 2020 UF2 (arc=4 days, H=21.7 ~155m, NHATS) from Steward Mt. Lemmon Sta. (Oct. 22.10-11p4)
K20T06W 2020 TW6 (arc=6 days, H=25.6 ~26m, NHATS) from Steward Mt. Lemmon Sta. (Oct. 21.51p3)
K18F04J 2018 FJ4 (arc=4 opp, H=21.1 ~204m, NHATS) from Spacewatch 1.8m (2018 Dec. 13.10-12p2)
K07U01Y 2007 UY1 (arc=3 opp, H=23.0 ~85m, NHATS) from Visnjan Obs. (Oct. 22.06-07p4)
11398 11398 1998 YP11 (radar) from ZTF (Oct. 17.31p1 & 21.35-38p3)
04179 4179 Toutatis (1989 AC) (radar) from ATLAS Mauna Loa (Oct. 21.22-24p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20U02U 2020 UU2 (arc=6 days, H=24.3 ~47m) from Steward Mt. Lemmon Sta. (Oct. 21.30p4) and Dave Balam via Plaskett 1.8m Telescope (Oct. 21.30p5)
K20U02T 2020 UT2 (arc=3 days, H=25.8 ~23m) from Steward Mt. Lemmon Sta. (Oct. 22.11p4)
K20U01W 2020 UW1 (arc=5 days, H=23.9 ~56m) from Steward Mt. Lemmon Sta. (Oct. 22.43-44p4)
K20U01P 2020 UP1 (arc=6 days, H=25.6 ~26m) from Steward Mt. Lemmon Sta. (Oct. 22.15-16p4)
K20U01M 2020 UM1 (arc=10 days, H=25.9 ~22m) from MLS (Oct. 21.23-25p3)
K20U01D 2020 UD1 (arc=6 days, H=25.3 ~29m) from Steward Mt. Lemmon Sta. (Oct. 22.23-24p4)
K20U01C 2020 UC1 (arc=6 days, H=24.7 ~39m) from Steward Mt. Lemmon Sta. (Oct. 22.24p4)
K20U00F 2020 UF (arc=6 days, H=24.6 ~41m) from Steward Mt. Lemmon Sta. (Oct. 21.47-49p4 & 22.22-23p4)
K20T08O 2020 TO8 (arc=7 days, H=25.6 ~26m) from Steward Mt. Lemmon Sta. (Oct. 22.24-25p3)
K20T08A 2020 TA8 (arc=6 days, H=24.1 ~51m) from MLS (Oct. 21.30-32p4)
K20T07E 2020 TE7 (arc=7 days, H=23.8 ~59m) from PS1 (Oct. 21.33-35p3)
K20T03X 2020 TX3 (arc=12 days, H=25.5 ~27m) from Steward Mt. Lemmon Sta. (Oct. 22.19-20p4)
K20T03W 2020 TW3 (arc=10 days, H=22.6 ~102m) from Mountainville Obs. (Oct. 21.45-52p3)
K20T03C 2020 TC3 (arc=12 days, H=24.8 ~37m) from Steward Mt. Lemmon Sta. (Oct. 22.09-10p3)
K20T01Q 2020 TQ1 (arc=14 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (Oct. 22.23p4)
K20R05V 2020 RV5 (arc=70 days, H=23.8 ~59m) from Castelmartini Obs. (Oct. 20.94-95p3)
K19W02L 2019 WL2 (arc=29 days, H=24.2 ~49m) from Tholen 2.24m (2019 Dec. 5.36p1)
K17X02O 2017 XO2 (arc=2 opp, H=22.4 ~112m) from Spacewatch 1.8m (2017 Dec. 19.27-31p2)
K17S20T 2017 ST20 (arc=3 opp, H=22.6 ~102m) from MLS (Oct. 21.32-34p4)
K12M03Q 2012 MQ3 (arc=2 opp, H=22.3 ~117m) from PS2 (Oct. 15.42-45p3)
K20O07K 2020 OK7 (arc=84 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (Oct. 22.19-21p4)
Observations of other objects
K20U02Q 2020 UQ2 (q=0.340 AU, Q=4.475 AU, arc=3 days, H=21.7 ~155m) from Balam/Plaskett (Oct. 21.18p4) and Steward Mt. Lemmon Sta. (Oct. 22.13p3)
K20U02G 2020 UG2 (arc=5 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (Oct. 22.23-24p4)
K20T07C 2020 TC7 (arc=7 days, H=19.6 ~407m) from MLS (Oct. 21.33-34p4)
K20T07A 2020 TA7 (i=41.8°, arc=7 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (Oct. 22.14p4)
K20T05H 2020 TH5 (arc=9 days, H=21.1 ~204m) from Steward Mt. Lemmon Sta. (Oct. 22.25-26p4)
K20T02M 2020 TM2 (arc=13 days, H=21.2 ~195m) from PS1 (Oct. 21.27-31p4)
K20T01C 2020 TC1 (arc=14 days, H=20.8 ~234m) from ZTF (Oct. 17.22-23p3) and PS1 (Oct. 21.33-36p3)
K20T00X 2020 TX (arc=16 days, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (Oct. 22.12p3)
K20S01K 2020 SK1 (arc=55 days, H=21.1 ~204m) from Steward Mt. Lemmon Sta. (Oct. 21.49-50p3)
K20R00B 2020 RB (i=59.2°, Q=5.524 AU, arc=48 days, H=19.1 ~513m) from PS2 (Oct. 21.21-25p4)
K20Q06U 2020 QU6 (arc=56 days, H=18.2 ~776m) from Forti Obs. (Oct. 21.77-78p4)
K20P07F 2020 PF7 (Q=5.014 AU, arc=74 days, H=18.7 ~616m) from MLS (Oct. 21.11-13p4) and Dettelbach Vineyard Obs. (Oct. 21.73p3)
K20P05C 2020 PC5 (Q=4.177 AU, arc=68 days, H=18.5 ~676m) from Castelmartini Obs. (Oct. 20.90p2), PS1 (Oct. 21.34-37p4), and Povegliano Veronese Obs. (Oct. 21.82-84p4)
K20P01D 2020 PD1 (Q=4.135 AU, arc=121 days, H=19.3 ~467m) from Castelmartini Obs. (Oct. 20.95-96p3), ZTF (Oct. 21.37p2), and Povegliano Veronese Obs. (Oct. 21.85-87p4)
K20O08C 2020 OC8 (arc=128 days, H=20.7 ~245m) from the Catalina Sky Survey (CSS) (Oct. 21.15-17p3) and Forti Obs. (Oct. 21.79p3)
K20O02A 2020 OA2 (arc=117 days, H=21.7 ~155m) from PS1 (Oct. 22.29-31p3)
K20D05B 2020 DB5 (arc=235 days, H=19.2 ~490m) from MLS (Oct. 21.26-27p4 at G=21.01-22.17)
K18T05S 2018 TS5 (arc=4 opp, H=21.4 ~178m) from PS1 (Oct. 15.35-38p3)
K18T02Y 2018 TY2 (q=0.364 AU, Q=4.217 AU, arc=2 opp, H=19.0 ~537m) from Spacewatch 1.8m (2018 Dec. 10.12-13p3)
K18L01B 2018 LB1 (Q=4.583 AU, arc=216 days, H=20.0 ~339m) from Spacewatch 1.8m (2018 Dec. 9.26-27p2)
K17X02A 2017 XA2 (arc=3 opp, H=19.9 ~355m) from Spacewatch 1.8m (2017 Dec. 21.23p2)
K17W16N 2017 WN16 (arc=57 days, H=21.5 ~170m) from Spacewatch 1.8m (2017 Dec. 22.32-35p2)
K16T93F 2016 TF93 (arc=4 opp, H=17.9 ~891m) from ZTF (Oct. 18.27-30p4) and MLS (Oct. 21.30-32p4)
K16N38V 2016 NV38 (Q=4.019 AU, arc=2 opp, H=18.7 ~616m) from Maigurova/Nikolaev Obs. (Sept. 6.97-99p7, 15.04-05p5 & 16.03-04p6)
K14OX9M 2014 OM339 (Q=4.239 AU, arc=2 opp, H=21.3 ~186m) from Spacewatch 1.8m (2018 Dec. 4.09-11p2)
K13U14X 2013 UX14 (arc=4 opp, H=18.3 ~741m) from Visnjan Obs. (Oct. 22.07-08p4)
K13TE4V 2013 TV144 (arc=3 opp, H=20.7 ~245m) from PS1 (Oct. 21.34-37p3)
K13P10F 2013 PF10 (arc=5 opp, H=20.2 ~309m) from MLS (Oct. 21.35-36p4)
K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from PS2 (Oct. 18.46-49p4), Castelmartini Obs. (Oct. 20.93-94p3), and Landehen Obs. (Oct. 21.86-88p2 & 21.93p1)
K13G07Y 2013 GY7 (arc=3 opp, H=20.5 ~269m) from WISE (Oct. 20.17p1, 20.23p1, 20.30p1, 20.36p1, 20.43p1, 20.50p1, 20.56p1, 20.69p2, 20.76p1 & 20.82p1)
K13B27G 2013 BG27 (arc=5 opp, H=20.4 ~282m) from MLS (Oct. 21.40-41p3)
K11B59F 2011 BF59 (arc=3 opp, H=19.3 ~467m) from MLS (Oct. 21.23-25p4)
K10JF3V 2010 JV153 (arc=3 opp, H=19.6 ~407m) from ZTF (Oct. 16.21p1, 16.28p1, 18.17p1 & 18.21p1)
K10F80Y 2010 FY80 (Q=4.343 AU, arc=3 opp, H=19.5 ~426m) from Spacewatch 1.8m (2018 Dec. 4.48-50p2)
K09F29Y 2009 FY29 (arc=3 opp, H=20.0 ~339m) from MLS (Oct. 21.23-25p4)
K08SF0W 2008 SW150 (arc=4 opp, H=19.6 ~407m) from program code "*" (19) via Slooh.com Chile Obs. (Oct. 18.34-36p2)
K08E06O 2008 EO6 (arc=4 opp, H=19.4 ~446m) from ZTF (Oct. 18.36-38p4 & 20.36-40p5) and MLS (Oct. 21.30-32p4)
K07VD7X 2007 VX137 (arc=5 opp, H=18.5 ~676m) from Castelmartini Obs. (Oct. 20.93p3)
K07T18Z 2007 TZ18 (arc=2 opp, H=20.9 ~224m) from ZTF (Oct. 21.13p2 & 21.19p2)
K07S01R 2007 SR1 (arc=4 opp, H=20.1 ~323m) from ZTF (Oct. 20.29p2 & 20.39p2)
K06SD4S 2006 SS134 (arc=3 opp, H=21.4 ~178m) from Steward Mt. Lemmon Sta. (Oct. 22.21-22p3)
K06S19S 2006 SS19 (Q=4.404 AU, arc=3 opp, H=18.9 ~562m) from MLS (Oct. 21.26-27p4)
K06H05Y 2006 HY5 (i=36.1°, arc=2 opp, H=20.3 ~295m) from ZTF (Oct. 20.36-38p4)
K03Y01M 2003 YM1 (arc=3 opp, H=18.1 ~812m) from ZTF (Oct. 19.47-49p2 & 21.43-48p3)
K03U22G 2003 UG22 (arc=3 opp, H=21.1 ~204m) from PS1 (Oct. 21.39-43p4)
K03O03A 2003 OA3 (arc=5 opp, H=19.6 ~407m) from WISE (Oct. 20.04p1, 20.17p1, 20.24p2, 20.31p1, 20.50p1, 20.57p1, 20.76p1, 20.83p1, 21.09p1, 21.16p1, 21.22p1, 21.29p1 & 21.35p1)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.4 ~708m) from Castelmartini Obs. (Oct. 21.02-03p3)
J99S10K 1999 SK10 (arc=4 opp, H=19.7 ~389m) from PS1 (Oct. 21.33-37p3)
m9885 489885 2008 HY37 from ZTF (Oct. 20.46-53p4 & 21.43-47p4)
m0824 480824 1999 JO6 from ZTF (Oct. 17.31p1 & 19.41p1)
l4706 474706 2005 GC141 from MLS (Oct. 21.39-41p4)
l4179 474179 1999 VS6 from Slooh.com Chile/code "*" (19) (Oct. 19.35-36p4), QOS Obs. (Oct. 20.82-83p6), PS1 (Oct. 21.40-43p3), and ATLAS Haleakala (Oct. 21.47-50p4)
l0678 470678 2008 SS251 from MLS (Oct. 21.20-22p4)
h5404 435404 2008 AT28 from ZTF (Oct. 19.38p1 & 19.44p1)
g0302 420302 2011 XZ1 from Maigurova/Nikolaev Obs. (Aug. 19.95-97p7, 22.95-97p10, 24.94-96p9, 25.94-96p10, 26.94-96p10, Sept. 7.92-94p6, 8.03-07p4, 8.91-99p8, 12.90-92p9, 13.90-91p9, 14.90-91p8, 14.99p2 & 15.89-91p10), ZTF (Oct. 17.19-23p3 & 17.29p1), Castelmartini Obs. (Oct. 20.88p3), ATLAS Haleakala (Oct. 21.34-36p4), and PS2 (Oct. 22.22-23p2)
f3192 413192 2002 VY94 from ZTF (Oct. 21.52-54p4)
e7653 407653 2011 QF3 from PS1 (Oct. 21.33-37p4)
c5186 385186 1994 AW1 from ZTF (Oct. 19.53p1 & 21.53-54p4)
c0455 380455 2003 UL3 from CSS (Oct. 21.50-51p3)
c0359 380359 2002 TN30 from ZTF (Oct. 21.41-45p4)
a1754 361754 2007 YV29 from MLS (Oct. 21.49-50p4)
Z7621 357621 2005 EG94 from MLS (Oct. 21.50p2)
Z4663 354663 2005 LY19 from ZTF (Oct. 21.52-54p5)
Z2143 352143 2007 LR32 from ZTF (Oct. 17.44-47p2, 19.44p1, 19.49p1 & 21.40-44p2)
Y3158 343158 2009 HC82 from ZTF (Oct. 21.53-54p4)
X3755 333755 2010 VC1 from MLS (Oct. 21.42-43p3)
W5395 325395 2009 CQ5 from MLS (Oct. 21.51-52p4)
W2763 322763 2001 FA7 from ZTF (Oct. 21.53-54p3)
V6695 316695 1996 TE9 from CSS (Oct. 21.14-16p4) and ZTF (Oct. 21.19-23p2)
U3262 303262 2004 RJ84 from ATLAS Haleakala (Oct. 21.33-35p4)
T7418 297418 2000 SP43 from MLS (Oct. 21.49-50p4)
R5611 275611 1999 XX262 from MLS (Oct. 21.48-50p4)
R4138 274138 2008 FU6 from MLS (Oct. 21.47-48p4) and CSS (Oct. 21.50-51p4)
P6412 256412 2007 BT2 from ZTF (Oct. 19.29p1, 19.34p1, 21.21p1 & 21.36p1) and MLS (Oct. 21.23-25p4)
K9924 209924 2005 WS55 from ZTF (Oct. 21.53-54p4)
G9675 169675 2002 JM97 from CSS (Oct. 21.15-17p4)
G3902 163902 2003 SW222 from ZTF (Oct. 17.30p1, 17.39p1, 19.36p1, 19.41p1, 21.34p1 & 21.39p2)
G3081 163081 2002 AG29 from Forti Obs. (Oct. 21.76p4)
G3014 163014 2001 UA5 from ATLAS Mauna Loa (Oct. 21.29-30p4)
G2911 162911 2001 LL5 from WISE (Oct. 20.46p1, 20.53p1, 20.60p2, 20.73p1, 20.79p1, 20.86p1 & 20.99p1)
G2463 162463 2000 JH5 from ZTF (Oct. 21.52-54p5)
G2173 162173 Ryugu (1999 JU3) from Castelmartini Obs. (Oct. 20.87p3), ATLAS Haleakala (Oct. 21.34-36p4), Southern Utsunomiya (Oct. 21.40p4), and PS1 (Oct. 22.29-31p4)
F9402 159402 1999 AP10 from Maigurova/Nikolaev Obs. (Sept. 7.90p3), QOS Obs. (Oct. 20.72p6), and program code 1 via Kuban State Univ. Obs. (Oct. 21.64-73p85)
F4302 154302 2002 UQ3 from MASTER Tavrida (Oct. 20.91p1 & 20.99p1), Castelmartini Obs. (Oct. 20.99p3), and ATLAS Haleakala (Oct. 21.38-39p4)
F4275 154275 2002 SR41 from ATLAS Haleakala (Oct. 21.27-29p4)
F3249 153249 2001 BW15 from ZTF (Oct. 18.20-24p3 & 18.28p1)
F2756 152756 1999 JV3 from ZTF (Oct. 19.46-48p2 & 21.50-51p2)
E3992 143992 2004 AF from MLS (Oct. 21.51-52p4)
E1498 141498 2002 EZ16 from MLS (Oct. 21.46-48p3)
E0333 140333 2001 TD2 from ATLAS Haleakala (Oct. 21.37-38p4)
E0158 140158 2001 SX169 from ZTF (Oct. 16.26p1 & 16.32p3)
D9211 139211 2001 GN2 from MLS (Oct. 21.32-34p4)
D7078 137078 1998 XZ4 from MLS (Oct. 21.49-50p4)
D6849 136849 1998 CS1 from MLS (Oct. 21.23-25p4)
99935 99935 2002 AV4 from ZTF (Oct. 19.47-51p2 & 21.49-52p2)
96744 96744 1999 OW3 from PS2 (Oct. 21.41-44p3)
90147 90147 2002 YK14 from MLS (Oct. 21.09-11p4)
89355 89355 2001 VS78 from ZTF (Oct. 21.48-51p2)
85182 85182 1991 AQ from ZTF (Oct. 21.53-54p4)
67367 67367 2000 LY27 from ZTF (Oct. 21.52-54p5)
65717 65717 1993 BX3 from Castelmartini Obs. (Oct. 20.99p3)
27002 27002 1998 DV9 from MLS (Oct. 21.25-27p4)
24761 24761 Ahau (1993 BW2) from ZTF (Oct. 21.52-54p4)
21374 21374 1997 WS22 from ZTF (Oct. 19.46-49p2)
21088 21088 Chelyabinsk (1992 BL2) from ZTF (Oct. 18.52-54p2, 20.48p1 & 20.53p1)
20826 20826 2000 UV13 from CSS (Oct. 21.07-09p4)
19764 19764 2000 NF5 from Maigurova/Nikolaev Obs. (Aug. 22.99-02p10, 23.99-01p10, 24.99-01p10, 25.99-01p10, 26.99p3, Sept. 8.01-03p10, 8.95-98p9, 10.94-97p7, 12.93-96p7, 14.94-99p9 & 15.93p3)
15817 15817 Lucianotesi (1994 QC) from ZTF (Oct. 16.32-36p4)
11405 11405 1999 CV3 from ATLAS Mauna Loa (Oct. 21.23-25p7)
08567 8567 1996 HW1 from ZTF (Oct. 21.48-51p2)
08035 8035 1992 TB from PS1 (Oct. 21.33-37p3)
07977 7977 1977 QQ5 from ATLAS Mauna Loa (Oct. 21.20-22p3)
06239 6239 Minos (1989 QF) from ATLAS Haleakala (Oct. 21.37-38p4)
05587 5587 1990 SB from ZTF (Oct. 17.37-38p2, 21.35p1 & 21.40p1)
04450 4450 Pan (1987 SY) from ATLAS Haleakala (Oct. 21.37-38p4)
04055 4055 Magellan (1985 DO2) from Maigurova/Nikolaev Obs. (Aug. 24.06-09p8, 25.06-09p10, 26.07-09p9, 27.07-09p3, Sept. 8.08-09p3, 9.08-10p7, 11.08-09p6 & 13.07-08p4) and ATLAS Mauna Loa (Oct. 21.47-48p4)
03753 3753 Cruithne (1986 TO) from ATLAS Mauna Loa (Oct. 21.61-64p4)
03691 3691 Bede (1982 FT) from Maigurova/Nikolaev Obs. (Sept. 7.88-89p3, 8.85-87p9 & 12.84-86p5), ZTF (Oct. 20.11-15p2), and CSS (Oct. 21.12-14p4)
03199 3199 Nefertiti (1982 RA) from ZTF (Oct. 21.53-54p4)
01943 1943 Anteros (1973 EC) from ZTF (Oct. 19.47-51p2 & 21.49-52p2)
01036 1036 Ganymed (1924 TD) from Maigurova/Nikolaev Obs. (Sept. 9.10p3, 11.09-10p4, 13.09-11p6 & 15.09-10p6)
00887 887 Alinda (1918 DB) from Maigurova/Nikolaev Obs. (Sept. 7.99-01p8, 8.96-97p9 & 10.95-96p8) and ATLAS Mauna Loa (Oct. 21.37p3)
00433 433 Eros (1898 DQ) from MLS (Oct. 21.51-52p4)

MPEC 2020-U175 - "10:45 UT" - 2020 UT3

K20U03T 2020 UT3 (small asteroid, H=25.4 ~28m) was picked up at 0644 UT on 20 Oct. by JPL SynTrack Robotic Telescope, observing it at Oct. 20.28-31p4. This detection was confirmed by Visnjan Obs. (Oct. 20.87-88p7) and Steward Mt. Lemmon Sta. (Oct. 21.19p4 & 22.25p4).

MPEC 2020-U174 - "10:43 UT" - 2020 US3

K20U03S 2020 US3 (small asteroid, H=26.1 ~20m) was picked up at 0712 UT on 20 Oct. by MLS, observing it at Oct. 20.30-32p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Oct. 20.43-44p4, 21.29p4 & 22.31p4) and Visnjan Obs. (Oct. 20.96-97p4).

MPEC 2020-U173 - "10:42 UT" - 2020 UR3

K20U03R 2020 UR3 (small asteroid, H=24.9 ~35m) was picked up at 0710 UT on 20 Oct. by MLS, observing it at Oct. 20.30-32p4 and 21.31-32p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Oct. 20.43p4, 21.28-29p4 & 22.26p4) and Visnjan Obs. (Oct. 20.90-91p4).

MPEC 2020-U172 - "10:41 UT" - 2020 UQ3

K20U03Q 2020 UQ3 (risk listed, Earth MOID=3.3 LD, H=23.9 ~56m) was picked up at 0637 UT on 20 Oct. by MLS, observing it at Oct. 20.28-29p3. This detection was confirmed by PS1 (Oct. 13.44p1 & 18.38-40p2), Steward Mt. Lemmon Sta. (Oct. 20.39-40p3 at G=21.21-22.29, 21.26-28p3 at G=21.04-25 & 22.27-28p4 at G=21.25-87), and Jana Pittichova Chesley via Table Mtn. Obs. (Oct. 21.26-27p2).

MPEC 2020-U171 - "06:47 UT" - 2020 UP3

K20U03P 2020 UP3 (i=49.1°, Q=4.707 AU, H=17.6 ~1.02 km) was picked up at 0154 UT on 19 Oct. by MLS, observing it at Oct. 19.08-10p6 and 22.07-08p3. This detection was confirmed by PS1 (2017 March 5.40-43p4 at G=21.75-22.24, 2017 March 25.37-40p3 at G=22.07-56, Sept. 27.23-24p2 at G=20.76-21.60 & 30.23p2 at G=20.89-21.15), Steward Mt. Lemmon Sta. (Oct. 19.10p4, 20.07-08p4 & 21.09p4), and Visnjan Obs. (Oct. 19.73p3).

MPEC 2020-U170 - "03:59 UT" - Comet C/2020 T2 (Palomar)

CK20T020 C/2020 T2 (Palomar) (q=2.055 AU, Q=640.212 AU, TP=2021 July 11.12532 TT) was picked up at 1221 UT on 7 Oct. by ZTF, observing it at Oct. 7.51-53p5, 9.52-53p3, 19.52-54p5, and 21.52-54p5. This detection was confirmed by PS1 (2019 Dec. 11.57-60p4, Jan. 1.51-55p4, 17.45-46p2 & 26.42-46p4), PS2 (Jan. 18.44-47p4, March 24.30-33p5, April 21.24p1 & 22.25-28p3), MLS (Feb. 29.21-23p4), B. Lutkenhoner via Slooh.com Canary Islands Obs. (Oct. 10.24-25p2), Sato/iTelObs-Mayhill (Oct. 10.49-50p2), Xingming Obs. #3 (Oct. 10.95p4), program code "@" (41) via Mt. Palomar (Oct. 11.52-53p3), Schiaparelli Obs. (Oct. 18.17-18p2), and Visnjan Obs. (Oct. 19.15-16p5).

MPEC 2020-U169 - "02:04 UT" - Comet P/2007 VQ11 = 2020 T1 (Catalina)

PK20T010 P/2020 T1 (q=2.695 AU, Q=8.157 AU, TP=2020 Sept. 16.37558 TT) was picked up at 1046 UT on 15 Oct. by MLS, observing it at Oct. 15.45-52p7. This detection was confirmed by PS1 (2019 Sept. 29.41-45p4 & 2019 Oct. 28.31-34p4), Sato/iTelObs-Mayhill (Aug. 18.46-47p2), Hidetaka Sato via iTelescope Obs. Siding Spring (Aug. 18.81p2), program code 2 via ESA Optical Ground Station (ESA OGS) (Oct. 16.24p3), Steward Mt. Lemmon Sta. (Oct. 16.45-46p3), SATINO-1 (Oct. 17.16-18p2), and Telescope Live (Oct. 17.19-21p3).
PK07V11Q P/2007 VQ11 (Catalina)

MPEC 2020-U168 - "00:21 UT" - 2020 UO3

K20U03O 2020 UO3 (Earth MOID=0.4 LD, H=28.1 ~8m) was picked up at 0637 UT on 21 Oct. by PS1, observing it at Oct. 21.28-31p4. This detection was confirmed by Visnjan Obs. (Oct. 21.86p5 & 21.92p3), program code 1 via KLENOT (Oct. 21.90-91p10), Northolt Branch Obs. (Oct. 21.92-94p3), Dax Obs. (Oct. 21.93-94p4), and Chelmsford Obs. (Oct. 21.94-95p2).

MPEC 2020-U167 - "00:04 UT" - 1998 VD32 = 2020 SS7

J98V32D 1998 VD32 (H=22.8 ~93m, NHATS)

Observers on 22 October '20

A total of 41 observers appear in today's MPECs.

Code	Observer / observatory
`T05`	ATLAS Haleakala in Hawaii, 10 in MPECs 2020-U176 & 2020-U178 -- 2020 UF3, 474179, 420302, 303262, 162173, 154302, 154275, 140333, 6239, 4450
`T08`	ATLAS Mauna Loa in Hawaii, 8 in MPECs 2020-U176 & 2020-U178 -- 2020 UF3, 163014, 11405, 7977, 4179, 4055, 3753, 887
`L54`	Berthelot Obs., 1 in MPEC 2020-U176 -- 2020 UA
`160`	Castelmartini Obs. in Italy, 11 in MPEC 2020-U176 -- 2020 UV, 2020 RV5, 2020 PD1, 2020 PC5, 2013 PY6, 2007 VX137, 2002 GZ8, 65717, 420302, 162173, 154302
`703`	Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2020-U176 -- 2020 OC8, 380455, 316695, 274138, 20826, 169675, 3691
`970`	Chelmsford Obs. in England, 1 in MPEC 2020-U168 -- 2020 UO3
`958`	Dax Obs. in France, 1 in MPEC 2020-U168 -- 2020 UO3
`K87`	Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2020-U176 -- 2020 PF7
`J042`	program code 2 via ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-U169 -- P/2020 T1
`K83`	Forti Obs., 3 in MPEC 2020-U176 -- 2020 QU6, 2020 OC8, 163081
`H06`	iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-U176 -- 2020 TU3
`H06\|`	Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 3 in MPECs 2020-U169, 2020-U170 & 2020-U176 -- C/2020 T2, P/2020 T1, 2020 SW
`Q621`	Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-U169 -- P/2020 T1
`U68`	JPL SynTrack Robotic Telescope, 1 in MPEC 2020-U175 -- 2020 UT3
`2461`	program code 1 via KLENOT in the Czech Republic, 1 in MPEC 2020-U168 -- 2020 UO3
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-U176 -- 159402
`Z43`	Landehen Obs., 1 in MPEC 2020-U176 -- 2013 PY6
`L52`	MASTER Tavrida, 1 in MPEC 2020-U176 -- 154302
`V01`	Mountainville Obs. in Utah, 2 in MPEC 2020-U176 -- 2020 TY1, 2020 TW3
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 42 in MPECs 2020-U169, 2020-U170, 2020-U171, 2020-U172, 2020-U173, 2020-U174, 2020-U176, 2020-U179 & 2020-U180 -- 2020 UV3, 2020 UU3, 2020 US3, 2020 UR3, 2020 UQ3, 2020 UP3, 2020 UM1, 2020 TR2, 2020 TM6, 2020 TC7, 2020 TA8, C/2020 T2, P/2020 T1, 2020 PF7, 2020 DB5, 2017 ST20, 2016 TF93, 2013 PF10, 2013 BG27, 2011 BF59, 2009 FY29, 2008 EO6, 2006 SS19, 90147, 474706, 470678, 388945, 361754, 357621, 333755, 325395, 297418, 275611, 274138, 27002, 256412, 143992, 141498, 139211, 137078, 136849, 433
`675@`	program code "@" (41) via Mt. Palomar in southern California, 1 in MPEC 2020-U170 -- C/2020 T2
`0895`	N.V. Maigurova via Nikolaev Obs. in Ukraine, 10 in MPEC 2020-U176 -- 2020 RJ, 2020 PT4, 2016 NV38, 420302, 19764, 159402, 4055, 3691, 1036, 887
`Z80`	Northolt Branch Obs. in England, 1 in MPEC 2020-U168 -- 2020 UO3
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 22 in MPECs 2020-U168, 2020-U169, 2020-U170, 2020-U171, 2020-U172, 2020-U176, 2020-U179, 2020-U180 & 2020-U181 -- 2020 UV3, 2020 UU3, 2020 UQ3, 2020 UP3, 2020 UO3, 2020 TM2, 2020 TE7, 2020 TC1, 2020 TB9, C/2020 T2, P/2020 T1, 2020 PC5, 2020 OA2, 2018 UQ1, 2018 TS5, 2013 TV144, 2003 UG22, 1999 SK10, 474179, 407653, 162173, 8035
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 10 in MPECs 2020-U170, 2020-U176, 2020-U179, 2020-U180 & 2020-U181 -- 2020 UV3, 2020 UU3, 2020 TD8, 2020 TB9, C/2020 T2, 2020 RB, 2013 PY6, 2012 MQ3, 96744, 420302
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 2 in MPEC 2020-U176 -- 2020 UU2, 2020 UQ2
`A48`	Povegliano Veronese Obs. in Italy, 2 in MPEC 2020-U176 -- 2020 PD1, 2020 PC5
`L18`	QOS Obs., 2 in MPEC 2020-U176 -- 474179, 159402
`C95`	SATINO-1 in France, 1 in MPEC 2020-U169 -- P/2020 T1
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2020-U170 -- C/2020 T2
`G409`	B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-U170 -- C/2020 T2
`W88*`	program code "*" (19) via Slooh.com Chile Obs. in Chile, 2 in MPEC 2020-U176 -- 2008 SW150, 474179
`Q21`	Southern Utsunomiya in Japan, 1 in MPEC 2020-U176 -- 162173
`291`	Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2020-U176 & 2020-U177 -- 2018 XQ2, 2018 TY2, 2018 SM1, 2018 LB1, 2018 FJ4, 2017 XO2, 2017 XA2, 2017 WN16, 2016 RW, 2014 OM339, 2010 FY80
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 43 in MPECs 2020-U169, 2020-U171, 2020-U172, 2020-U173, 2020-U174, 2020-U175 & 2020-U176 -- 2020 UY2, 2020 UW1, 2020 UU2, 2020 UT3, 2020 UT2, 2020 US3, 2020 UR3, 2020 UQ3, 2020 UQ2, 2020 UP3, 2020 UP1, 2020 UM2, 2020 UK2, 2020 UJ, 2020 UH, 2020 UG2, 2020 UG, 2020 UF2, 2020 UF, 2020 UE, 2020 UD1, 2020 UC1, 2020 UA1, 2020 TY4, 2020 TX3, 2020 TX, 2020 TW6, 2020 TT5, 2020 TS4, 2020 TQ1, 2020 TO8, 2020 TK5, 2020 TK4, 2020 TJ3, 2020 TH5, 2020 TD8, 2020 TC3, 2020 TA7, P/2020 T1, 2020 SK1, 2020 OK7, 2017 UH5, 2006 SS134
`673!`	Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 1 in MPEC 2020-U172 -- 2020 UQ3
`Z08`	Telescope Live, 1 in MPEC 2020-U169 -- P/2020 T1
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-U176 -- 2020 RR4, 2019 WL2
`L01`	Visnjan Obs. in Croatia, 8 in MPECs 2020-U168, 2020-U170, 2020-U171, 2020-U173, 2020-U174, 2020-U175 & 2020-U176 -- 2020 UT3, 2020 US3, 2020 UR3, 2020 UP3, 2020 UO3, C/2020 T2, 2013 UX14, 2007 UY1
`C51`	WISE in Earth polar orbit, 3 in MPEC 2020-U176 -- 2013 GY7, 2003 OA3, 162911
`N88`	Xingming Obs. #3, 1 in MPEC 2020-U170 -- C/2020 T2
`I41`	Zwicky Transient Facility (ZTF) in southern California, 44 in MPECs 2020-U170 & 2020-U176 -- 2020 TR2, 2020 TC1, C/2020 T2, 2020 PD1, 2016 TF93, 2010 JV153, 2008 EO6, 2007 TZ18, 2007 SR1, 2006 HY5, 2003 YM1, 99935, 89355, 85182, 67367, 489885, 480824, 435404, 420302, 413192, 385186, 380359, 354663, 352143, 343158, 322763, 316695, 256412, 24761, 21374, 21088, 209924, 163902, 162463, 15817, 153249, 152756, 140158, 11398, 8567, 5587, 3691, 3199, 1943

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

Impact Risk Monitoring on 22 October '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 UQ3	JPL Sentry	1700	2112-2112	1	1.163e-07	-6.82	-6.82	0	JPL: Computed at 09:30 today Pacific time based on 18 observations spanning 8.8473 days (2020-Oct-13.435266 to 2020-Oct-22.282521). Diameter approximately 0.054 km. from weighted mean H=23.98.
2020 UQ3	NEODyS	1700	2112	1	2.31e-07	-6.53	-6.53	0	NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2020-10-13.436 to 2020-10-22.283."

2020 UL3	JPL Sentry	1700	2106-2119	22	6.1028306e-06	-4.76	-4.95	0	JPL: Computed at 09:35 today Pacific time based on 22 observations spanning 3.8605 days (2020-Oct-17.535831 to 2020-Oct-21.39631). Diameter approximately 0.073 km. from weighted mean H=23.34.
2020 UL3	NEODyS	1700	2107-2120	30	5.05e-06	-4.84	-5.04	n/a	NEODyS: "Based on 22 optical observations (of which 1 are rejected as outliers) from 2020-10-17.537 to 2020-10-21.397."

2020 UK2	JPL Sentry	1730	2089-2109	7	1.497119e-05	-6.10	-6.52	0	JPL: Computed at 10:07 today Pacific time based on 22 observations spanning 4.2497 days (2020-Oct-18.18281 to 2020-Oct-22.432538). Diameter approximately 0.014 km. from weighted mean H=26.99.

2020 UY	JPL Sentry	1700	2068-2119	12	2.25586e-06	-7.84	-8.49	0	JPL: Computed at 08:09 Oct. 20th Pacific time based on 21 observations spanning 2.0303 days (2020-Oct-17.283456 to 2020-Oct-19.313708). Diameter approximately 0.005 km. from weighted mean H=28.95.

2020 UJ	JPL Sentry	1730	2043-2043	1	5.266e-09	-7.44	-7.44	0	JPL: Computed at 10:07 today Pacific time based on 24 observations spanning 11.796 days (2020-Oct-10.323552 to 2020-Oct-22.119114). Diameter approximately 0.051 km. from weighted mean H=24.11.

2020 UH	JPL Sentry	1800	2098-2119	4	5.3899e-07	-6.27	-6.51	0	JPL: Computed at 10:27 today Pacific time based on 51 observations spanning 6.8257 days (2020-Oct-15.308398 to 2020-Oct-22.134144). Diameter approximately 0.044 km. from weighted mean H=24.42.

2020 UE	JPL Sentry	1730	2061-2118	26	3.060301e-05	-4.72	-5.05	0	JPL: Computed at 09:56 today Pacific time based on 110 observations spanning 6.6683 days (2020-Oct-15.46967 to 2020-Oct-22.137959). Diameter approximately 0.026 km. from weighted mean H=25.56.

2020 UC	JPL Sentry	1700	2053-2117	56	0.000124936621	-5.39	-5.96	0	JPL: Computed at 12:38 Oct. 17th Pacific time based on 15 observations spanning 1.0081 days (2020-Oct-16.314729 to 2020-Oct-17.322782). Diameter approximately 0.010 km. from weighted mean H=27.55.

2020 UA	JPL Sentry	1800	2074-2081	5	1.06017e-06	-7.81	-8.16	0	JPL: Computed at 10:38 today Pacific time based on 79 observations spanning 4.6505 days (2020-Oct-16.31568 to 2020-Oct-20.966211). Diameter approximately 0.007 km. from weighted mean H=28.39.

2020 TD8	JPL Sentry	1730	2045-2096	12	1.021103e-05	-5.86	-5.95	0	JPL: Computed at 09:53 today Pacific time based on 25 observations spanning 6.9802 days (2020-Oct-15.322434 to 2020-Oct-22.302597). Diameter approximately 0.013 km. from weighted mean H=27.02.

2020 TK5	JPL Sentry	1830	2039-2056	6	1.232137e-05	-3.80	-3.90	0	JPL: Computed at 11:11 today Pacific time based on 73 observations spanning 7.8719 days (2020-Oct-14.331481 to 2020-Oct-22.203338). Diameter approximately 0.066 km. from weighted mean H=23.57.

2020 TY4	JPL Sentry	1800	2086-2111	5	3.168816e-05	-4.31	-4.32	0	JPL: Computed at 10:36 today Pacific time based on 54 observations spanning 9.0486 days (2020-Oct-13.13828 to 2020-Oct-22.186846). Diameter approximately 0.054 km. from weighted mean H=23.97.

2020 TS4	JPL Sentry	1830	2103-2103	1	1.202e-09	-10.74	-10.74	0	JPL: Computed at 11:04 today Pacific time based on 89 observations spanning 8.2169 days (2020-Oct-14.208103 to 2020-Oct-22.425042). Diameter approximately 0.009 km. from weighted mean H=27.87.

2020 TJ3	JPL Sentry	1800	2056-2119	34	7.12676825e-05	-4.14	-4.81	0	JPL: Computed at 10:22 today Pacific time based on 53 observations spanning 10.976 days (2020-Oct-11.171145 to 2020-Oct-22.147582). Diameter approximately 0.041 km. from weighted mean H=24.56.

2020 TY1	JPL Sentry	1730	2092-2113	4	3.9721e-07	-5.45	-5.80	0	JPL: Computed at 10:08 today Pacific time based on 61 observations spanning 13.026 days (2020-Oct-08.410259 to 2020-Oct-21.43631). Diameter approximately 0.100 km. from weighted mean H=22.59.

2020 RR4	JPL Sentry	1730	R E M O V E D						JPL: Risk listing removed at 1716 UTC today

2019 UT5	JPL Sentry	1700	2080-2080	1	2.364e-10	-11.27	-11.27	0	JPL: Computed at 08:19 Dec. 4th of 2019 Pacific time based on 24 observations spanning 5.2586 days (2019-Oct-24.29031 to 2019-Oct-29.548932). Diameter approximately 0.007 km. from weighted mean H=28.42.

2019 UE4	JPL Sentry	1700	2064-2119	18	1.1279497e-05	-6.43	-6.92	0	JPL: Computed at 05:35 Nov. 4th of 2019 Pacific time based on 82 observations spanning 11.876 days (2019-Oct-23.381323 to 2019-Nov-04.2577). Diameter approximately 0.010 km. from weighted mean H=27.69.

2018 XQ2	JPL Sentry	1800	2065-2120	64	0.000721020211	-5.03	-5.52	0	JPL: Computed at 10:26 today Pacific time based on 44 observations spanning 27.825 days (2018-Dec-10.2423 to 2019-Jan-07.067641). Diameter approximately 0.008 km. from weighted mean H=28.09.

2013 UR1	JPL Sentry	1700	2050-2060	4	8.5417e-07	-6.90	-6.96	0	JPL: Computed at 00:20 April 9th of 2017 Pacific time based on 25 observations spanning 7.0358 days (2013-Oct-23.38002 to 2013-Oct-30.415818). Diameter approximately 0.009 km. from weighted mean H=27.77.

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 22 October '20

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

2306	Grabbed MPEC 2020-U179 - 2020 UU3 - see above Grabbed MPEC 2020-U180 - 2020 UV3 - see above Grabbed MPEC 2020-U181 - 2020 TB9 - see above
1830	Noted that JPL Sentry has updated its 2020 TK5 risk assessment - see above Noted that JPL Sentry has updated its 2020 TS4 risk assessment - see above
1800	Noted that JPL Sentry has updated its 2018 XQ2 risk assessment - see above Noted that JPL Sentry has updated its 2020 TJ3 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 UA risk assessment - see above Noted that JPL Sentry has updated its 2020 UH risk assessment - see above Grabbed MPEC 2020-U178 - 2020 UF3 - see above
1730	Noted that JPL Sentry has removed 2020 RR4 as an impact risk - see above Noted that JPL Sentry has updated its 2020 TD8 risk assessment - see above Noted that JPL Sentry has updated its 2020 TY1 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 UJ risk assessment - see above Noted that JPL Sentry has updated its 2020 UK2 risk assessment - see above
1700	Noted that JPL Sentry has updated its 2013 UR1 risk assessment - see above Noted that JPL Sentry has updated its 2019 UE4 risk assessment - see above Noted that JPL Sentry has updated its 2019 UT5 risk assessment - see above Noted that JPL Sentry has updated its 2020 UC risk assessment - see above Noted that JPL Sentry has posted 2020 UL3 as an impact risk - see above Noted that NEODyS has posted 2020 UL3 as an impact risk - see above Noted that JPL Sentry has posted 2020 UQ3 as an impact risk - see above Noted that NEODyS has posted 2020 UQ3 as an impact risk - see above Noted that JPL Sentry has updated its 2020 UY risk assessment - see above Grabbed MPEC 2020-U171 - 2020 UP3 - see above Grabbed MPEC 2020-U172 - 2020 UQ3 - see above Grabbed MPEC 2020-U173 - 2020 UR3 - see above Grabbed MPEC 2020-U174 - 2020 US3 - see above Grabbed MPEC 2020-U175 - 2020 UT3 - see above Grabbed MPEC 2020-U176 - Daily Orbit Update - see above Grabbed MPEC 2020-U177 - 2016 RW - see above
0540	Grabbed MPEC 2020-U170 - Comet C/2020 T2 (Palomar) - see above
0401	Grabbed MPEC 2020-U169 - Comet P/2007 VQ11 = 2020 T1 (Catalina) - see above
0035	Grabbed MPEC 2020-U167 - 1998 VD32 = 2020 SS7 - see above Grabbed MPEC 2020-U168 - 2020 UO3 - see above

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