2020-10-28 Tracking News

Contents on 28 October '20

IAU Minor Planet Center
- NEOCP Activity -- 32 listings
- New MPECs -- eight MPECs
Observers -- 46 observers
Impact Risk Monitoring -- sixteen objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1206 risk-listed objects, 195 have had news in the last 31 days. Updated at 2301 UTC on 28 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 28 October '20

The MPC's NEO Confirmation Page has 32 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 32 objects listed. Of these, 23 were "one nighters." So far The Tracking News has counted a total of 43 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 28 October '20

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been eight MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-U254 time-stamped "02:25 UT" - Comet C/2020 U3 (Rankin) - see below
MPEC 2020-U255 time-stamped "06:57 UT" - 2020 UN6 - see below
MPEC 2020-U256 time-stamped "12:08 UT" - Daily Orbit Update - see below
MPEC 2020-U257 time-stamped "13:13 UT" - 2020 UO6 - see below
MPEC 2020-U258 time-stamped "13:16 UT" - 2020 UP6 - see below
MPEC 2020-U259 time-stamped "19:39 UT" - 2020 UQ6 - see below
MPEC 2020-U260 time-stamped "23:00 UT" - Comet C/2020 U4 (Panstarrs) - see below
MPEC 2020-U261 time-stamped "23:18 UT" - Comet C/2020 U5 (Panstarrs)

MPEC 2020-U261 - "23:18 UT" - Comet C/2020 U5 (Panstarrs)

CK20U050 C/2020 U5 (Panstarrs) (i=97.3°, q=3.760 AU, Q=2767.926 AU, TP=2022 Apr. 28.41093 TT) was picked up at 1323 UT on 22 Oct. by Pan-STARRS 1 (PS1), observing it at Oct. 22.56-60p4 and 23.54-58p4. This detection was confirmed by Pan-STARRS 2 (PS2) (Sept. 25.61-62p4), the Mt. Lemmon Survey (MLS) (Oct. 14.46-47p4), GROWTH India Telescope (Oct. 23.96p3), Hidetaka Sato via iTelescope Obs. Mayhill (Oct. 24.46p2), Chante-Perdrix Obs. (Oct. 25.15-18p3), Schiaparelli Obs. (Oct. 25.15-17p2), Salvatore di Giacomo Obs. (Oct. 26.05p1 & 26.11p1), Clixby Obs. (Oct. 26.08-09p3), B. Lutkenhoner via Slooh.com Canary Islands Obs. (Oct. 26.18-20p2), Shinshiro Obs. (Oct. 26.73-74p3), and Visnjan Obs. (Oct. 28.04-07p5).

MPEC 2020-U260 - "23:00 UT" - Comet C/2020 U4 (Panstarrs)

CK20U040 C/2020 U4 (Panstarrs) (i=167.0°, q=5.354 AU, TP=2022 Apr. 7.67537 TT) was picked up at 1320 UT on 22 Oct. by PS1, observing it at Jan. 26.37-39p3, 30.29-33p4, Sept. 27.62-63p4, Oct. 3.56-59p4, 22.56-60p4, and 23.55-58p3. This detection was confirmed by PS2 (2019 Nov. 9.61p1, 2019 Nov. 28.52-56p4, 2019 Dec. 20.44-45p2, April 19.28-29p2, Oct. 5.60p1 & 17.61p1), MLS (Oct. 13.48-50p4 & 27.47-49p4), GROWTH India Telescope (Oct. 23.92-93p3), Sato/iTelObs-Mayhill (Oct. 24.47-48p2), Visnjan Obs. (Oct. 28.02-06p5), and Telescope Live (Oct. 28.12-13p2).

MPEC 2020-U259 - "19:39 UT" - 2020 UQ6

K20U06Q 2020 UQ6 (Q=4.140 AU, Earth MOID=1.8 LD, H=22.57 ~104m) was picked up at 1327 UT on 27 Oct. by Kiso Obs., observing it at Oct. 27.56-62p6 and 27.71-75p8. This detection was confirmed by Muensterschwarzach Obs. (Oct. 27.84-85p4), Visnjan Obs. (Oct. 27.86p7), ROASTERR-1 (Oct. 27.86-87p5), Chelmsford Obs. (Oct. 27.87p3, 27.94p2 & 28.01p2), Forti Obs. (Oct. 27.88p5), Great Shefford Obs. (Oct. 27.88p4), Spica Obs. (Oct. 27.89p3), Farra d'Isonzo Obs. (Oct. 27.89-90p4), Northolt Branch Obs. (Oct. 27.91-94p9), Clixby Obs. (Oct. 27.95p5), Kiev Comet Station (Oct. 27.95p8), M. Suzuki via iTelescope Obs. Nerpio (Oct. 28.06-07p3), Galilei Obs. (Oct. 28.11p7), program code 6 via iTelescope Obs. Nerpio (Oct. 28.19-20p4), Wiggins Obs. (Oct. 28.28p9), the Zwicky Transient Facility (ZTF) (Oct. 28.40-42p4), GROWTH India Telescope (Oct. 28.64-65p3), JAXA Space Tracking & Communications Center (JAXA STCC) (Oct. 28.69p4), and Xingming Obs. #3 (Oct. 28.72p5).

MPEC 2020-U258 - "13:16 UT" - 2020 UP6

K20U06P 2020 UP6 (borderline-small, i=36.4°, H=22.0 ~135m) was picked up at 0503 UT on 28 Oct. by MLS, observing it at Oct. 28.21-23p4. This detection was confirmed by PS2 (Oct. 25.50-51p2 & 26.45-46p2) and Steward Obs. Mt. Lemmon Station (Oct. 28.25p3 & 28.40p3).

MPEC 2020-U257 - "13:13 UT" - 2020 UO6

K20U06O 2020 UO6 (risk listed, Earth MOID=1.9 LD, H=27.4 ~11m, close passer) was picked up at 0804 UT on 27 Oct. by MLS, observing it at Oct. 27.34p2 and 28.45p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Oct. 27.37-38p4 & 27.46p3), Xingming Obs. #3 (Oct. 27.81p5), Farra d'Isonzo Obs. (Oct. 27.93-95p3), Visnjan Obs. (Oct. 27.93-94p5), Great Shefford Obs. (Oct. 27.97p4), Clixby Obs. (Oct. 27.97p4), Northolt Branch Obs. (Oct. 27.98-99p2), and Pascoli Obs. (Oct. 28.11-12p3).

<< DOU on 28 October '20 >> MPEC 2020-U256 - "12:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K20U04X 2020 UX4 (small asteroid, arc=5 days, H=25.6 ~26m, close passer) from the Catalina Sky Survey (CSS) (Oct. 27.22-24p3) and Steward Mt. Lemmon Sta. (Oct. 28.19p4)
K20U04O 2020 UO4 (small asteroid, arc=5 days, H=28.7 ~6m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (Oct. 28.21-22p3)
K20U03L 2020 UL3 (small asteroid, arc=11 days, H=23.2 ~78m) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Oct. 27.32-33p3) and Steward Mt. Lemmon Sta. (Oct. 28.46-47p4)
K20U03A 2020 UA3 (small asteroid, arc=12 days, H=26.7 ~15m, close passer, NHATS target) from MLS (Oct. 27.21-22p3)
K20T08D 2020 TD8 (small asteroid, arc=12 days, H=26.9 ~14m, close passer, NHATS target) from Northolt Branch Obs. (Oct. 26.93-94p5)
K20T05K 2020 TK5 (small asteroid, q=0.350 AU, arc=13 days, H=23.6 ~65m) from Holmes/CTIO (Oct. 27.16-17p2)
K20T01Y 2020 TY1 (small asteroid, arc=20 days, H=22.7 ~98m) from CSS (Oct. 27.26-28p3), Holmes/CTIO (Oct. 27.31-32p3), and Steward Mt. Lemmon Sta. (Oct. 28.24p4)
K19T02C 2019 TC2 (small asteroid, arc=19 days, H=27.9 ~9m, close passer) from UH/Tholen NEO Follow-Up 2.24m Telescope (2019 Oct. 24.49p1 at G=25.36)
K17U07L 2017 UL7 (small asteroid, arc=19 days, H=24.4 ~45m) from the Spacewatch 1.8m telescope (2017 Oct. 30.14-18p3)
Observations of close-passing objects
K20U06M 2020 UM6 (arc=2 days, H=25.3 ~29m) from Xingming Obs. #3 (Oct. 27.81p5) and Spica Obs. (Oct. 27.92-93p5)
K20U04J 2020 UJ4 (arc=5 days, H=26.9 ~14m) from Great Shefford Obs. (Oct. 27.85-87p2)
K20U04B 2020 UB4 (arc=6 days, H=26.4 ~18m) from Steward Mt. Lemmon Sta. (Oct. 28.36p4)
K20U01N 2020 UN1 (arc=18 days, H=25.4 ~28m) from Steward Mt. Lemmon Sta. (Oct. 28.47p4)
K20T05S 2020 TS5 (arc=16 days, H=26.1 ~20m, NHATS target) from Holmes/CTIO (Oct. 27.12-13p4) and Steward Mt. Lemmon Sta. (Oct. 27.36p3)
K20T05R 2020 TR5 (arc=17 days, H=26.2 ~19m) from Northolt Branch Obs. (Oct. 26.95-96p4) and Steward Mt. Lemmon Sta. (Oct. 27.31-32p3)
K17T06A 2017 TA6 (arc=2 opp, H=27.1 ~13m, NHATS target) from Spacewatch 1.8m (2017 Oct. 19.50p3)
K08U95U 2008 UU95 (Q=4.239 AU, arc=2 opp, H=23.7 ~62m) from MLS (Oct. 27.21-22p4)
Observation campaigns (NHATS targets, radar support)
K20U05A 2020 UA5 (arc=8 days, H=24.2 ~49m, NHATS) from Steward Mt. Lemmon Sta. (Oct. 28.18p4)
K20U03N 2020 UN3 (arc=7 days, H=23.9 ~56m, NHATS) from CSS (Oct. 27.26-28p3) and Holmes/CTIO (Oct. 27.28p3)
K20U03M 2020 UM3 (arc=10 days, H=24.3 ~47m, NHATS) from Holmes/CTIO (Oct. 27.14-15p3)
K20U02W 2020 UW2 (arc=11 days, H=24.9 ~35m, NHATS) from Holmes/CTIO (Oct. 27.34-35p3) and Steward Mt. Lemmon Sta. (Oct. 28.45p2)
K20S06H 2020 SH6 (arc=32 days, H=24.7 ~39m, NHATS) from Steward Mt. Lemmon Sta. (Oct. 28.29p3)
K07U01Y 2007 UY1 (arc=3 opp, H=23.0 ~85m, NHATS) from Visnjan Obs. (Oct. 28.10p4)
-- NHATS target table
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20U06F 2020 UF6 (arc=9 days, H=22.5 ~107m) from Steward Mt. Lemmon Sta. (Oct. 28.35p4)
K20U06E 2020 UE6 (arc=11 days, H=23.4 ~71m) from Steward Mt. Lemmon Sta. (Oct. 28.39-42p4)
K20U05Z 2020 UZ5 (arc=4 days, H=22.5 ~107m) from Holmes/CTIO (Oct. 27.29-30p3)
K20U05N 2020 UN5 (arc=5 days, H=26.9 ~14m) from Steward Mt. Lemmon Sta. (Oct. 28.26-27p4)
K20U05C 2020 UC5 (arc=8 days, H=23.0 ~85m) from Steward Mt. Lemmon Sta. (Oct. 28.34-38p8)
K20U04G 2020 UG4 (arc=9 days, H=24.6 ~41m) from Steward Mt. Lemmon Sta. (Oct. 28.24p3)
K20U02B 2020 UB2 (Q=4.766 AU, arc=11 days, H=22.6 ~102m) from Holmes/CTIO (Oct. 27.22-24p3) and Steward Mt. Lemmon Sta. (Oct. 28.22p3)
K20U01W 2020 UW1 (arc=10 days, H=23.9 ~56m) from Holmes/CTIO (Oct. 27.21-22p4)
K20U00Z 2020 UZ (i=44.1°, arc=12 days, H=22.1 ~129m) from Steward Mt. Lemmon Sta. (Oct. 28.38-39p4)
K20U00D 2020 UD (arc=20 days, H=22.9 ~89m) from Holmes/CTIO (Oct. 27.25-26p3) and Steward Mt. Lemmon Sta. (Oct. 28.28p4)
K20T03P 2020 TP3 (arc=29 days, H=22.1 ~129m) from Steward Mt. Lemmon Sta. (Oct. 28.44-45p4)
K20T03G 2020 TG3 (Q=4.606 AU, arc=21 days, H=22.2 ~123m) from MLS (Oct. 27.21-22p4)
K20R05V 2020 RV5 (arc=76 days, H=23.9 ~56m) from CSS (Oct. 27.24-26p3)
K20P07K 2020 PK7 (arc=100 days, H=23.3 ~74m) from Steward Mt. Lemmon Sta. (Oct. 28.12p4)
K18V01J 2018 VJ1 (arc=2 opp, H=24.2 ~49m) from MLS (Oct. 27.31-33p4)
K17T06M 2017 TM6 (arc=31 days, H=23.3 ~74m) from Spacewatch 1.8m (2017 Oct. 30.43-44p2)
K20U02Q 2020 UQ2 (q=0.342 AU, Q=4.372 AU, arc=9 days, H=21.9 ~141m) from Steward Mt. Lemmon Sta. (Oct. 28.21p4)
Observations of other objects
K20U01L 2020 UL1 (arc=19 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (Oct. 28.31-32p4)
K20U00F 2020 UF from Steward Mt. Lemmon Sta. (Oct. 28.33-34p4)
K20T07C 2020 TC7 (arc=14 days, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (Oct. 28.30-31p4)
K20T05U 2020 TU5 (i=56.8°, arc=14 days, H=20.4 ~282m) from Steward Mt. Lemmon Sta. (Oct. 27.48-49p4 at G=20.64-22.02)
K20T05H 2020 TH5 (arc=14 days, H=21.1 ~204m) from Holmes/CTIO (Oct. 27.18-19p3)
K20S04E 2020 SE4 (arc=39 days, H=20.4 ~282m) from Holmes/CTIO (Oct. 27.36-37p3)
K20S03F 2020 SF3 (Q=4.371 AU, arc=48 days, H=21.6 ~162m) from Steward Mt. Lemmon Sta. (Oct. 28.36-38p4)
K20S00B 2020 SB (Q=0.988 AU, arc=42 days, H=20.3 ~295m) from Steward Mt. Lemmon Sta. (Oct. 28.10p4)
K20Q06U 2020 QU6 (arc=62 days, H=18.2 ~776m) from Steward Mt. Lemmon Sta. (Oct. 28.18-20p4)
K20P05P 2020 PP5 (Q=4.596 AU, arc=79 days, H=19.2 ~490m) from Steward Mt. Lemmon Sta. (Oct. 28.11p4)
K20M03L 2020 ML3 (arc=3 opp, H=20.6 ~257m) from MLS (Oct. 27.17-18p4)
K20L02A 2020 LA2 (Q=7.490 AU, arc=134 days, H=19.8 ~371m) from MLS (Oct. 27.36-38p4)
K17V02J 2017 VJ2 from MLS (2008 Sept. 21.43-45p8)
K17H03P 2017 HP3 (arc=2 opp, H=21.5 ~170m) from Spacewatch 1.8m (2017 Oct. 30.36-38p2)
K16F14Y 2016 FY14 (arc=2 opp, H=19.1 ~513m) from MLS (Oct. 27.21-22p4)
K16E84L 2016 EL84 (arc=4 opp, H=19.7 ~389m) from Steward Mt. Lemmon Sta. (Oct. 28.47-48p2)
K16E01N 2016 EN1 (arc=2 opp, H=21.3 ~186m) from Spacewatch 1.8m (2018 Aug. 31.40-41p2)
K15B04F 2015 BF4 (arc=6 opp, H=20.4 ~282m) from MLS (Oct. 27.24-25p4)
K13U14X 2013 UX14 (arc=4 opp, H=18.3 ~741m) from MLS (Oct. 27.39-41p4)
K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from CSS (Oct. 27.16-17p4)
K13M05X 2013 MX5 (arc=3 opp, H=18.9 ~562m) from MLS (Oct. 27.27-29p4)
K12X17E 2012 XE17 (arc=3 opp, H=20.1 ~323m) from MLS (Oct. 27.49-51p4)
K07T08G 2007 TG8 (Q=4.305 AU, arc=3 opp, H=18.6 ~645m) from GINOP-KHK (Oct. 28.09-10p3)
K07S01R 2007 SR1 (arc=4 opp, H=20.2 ~309m) from Visnjan Obs. (Oct. 28.08-09p4)
K05JA8T 2005 JT108 (arc=6 opp, H=19.4 ~446m) from Clixby Obs. (Oct. 27.04-05p5)
K04U01S 2004 US1 (arc=2 opp, H=20.8 ~234m) from program code "[" (25) via Slooh.com Canary Islands Obs. (Oct. 26.85-86p4) and Clixby Obs. (Oct. 27.06-07p5)
K04U01R 2004 UR1 (arc=4 opp, H=20.5 ~269m) from Forti Obs. (Oct. 27.76-77p3)
K04L03U 2004 LU3 (arc=5 opp, H=18.4 ~708m) from CSS (Oct. 27.36-38p4)
K03U22G 2003 UG22 (arc=3 opp, H=21.1 ~204m) from MLS (Oct. 27.28-29p4)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.5 ~676m) from Clixby Obs. (Oct. 27.08-09p5)
K00P27Q 2000 PQ27 (arc=3 opp, H=20.0 ~339m) from Clixby Obs. (Oct. 27.93-94p5)
J98M24R 1998 MR24 (arc=5 opp, H=19.2 ~490m) from MLS (Oct. 27.27-29p4)
o0094 500094 2012 BC20 from N.V. Maigurova via Nikolaev Obs. (Aug. 22.79-81p6)
m0824 480824 1999 JO6 from CSS (Oct. 27.26-28p4)
l7524 477524 2010 EH43 from Castelmartini Obs. (2016 Sept. 29.99p3)
l4179 474179 1999 VS6 from MLS (Oct. 27.31-33p4)
j2302 452302 1995 YR1 from GINOP-KHK (Sept. 9.03p3)
f8797 418797 2008 VF from Squirrel Valley Obs. (Oct. 27.99-00p3)
f4903 414903 2010 XT45 from CSS (Oct. 27.26-28p4)
c0321 380321 2002 HF8 from MLS (Oct. 27.36-38p4)
b6848 376848 2001 RY47 from Foxfire Village Obs. (Oct. 28.08-11p3)
Z1331 351331 2004 XH29 from MLS (Oct. 27.28-30p4)
O1596 241596 1998 XM2 from MLS (Oct. 27.45-47p4)
J4126 194126 2001 SG276 from CSS (Oct. 27.21-22p3)
G2173 162173 Ryugu (1999 JU3) from Northolt Branch Obs. (Oct. 26.91p3) and CSS (Oct. 27.14-15p4)
F4302 154302 2002 UQ3 from MLS (Oct. 27.21-22p4) and Foxfire Village Obs. (Oct. 28.07-11p3)
F2978 152978 2000 GJ147 from CSS (Oct. 27.39-40p2)
E0333 140333 2001 TD2 from MLS (Oct. 27.14-16p4)
90075 90075 2002 VU94 from Foxfire Village Obs. (Oct. 28.06-10p3)
68359 68359 2001 OZ13 from CSS (Oct. 27.26-28p4)
65717 65717 1993 BX3 from CSS (Oct. 27.22-24p3)
53435 53435 1999 VM40 from Maigurova/Nikolaev Obs. (Aug. 24.04-06p7 & Sept. 13.08-09p2), CSS (Oct. 27.45-46p4), and MLS (Oct. 27.48-49p4)
30825 30825 1990 TG1 from Foxfire Village Obs. (Oct. 28.05-10p3)
23714 23714 1998 EC3 from program code "!" (10) via DECam (Oct. 25.09-14p3)
21374 21374 1997 WS22 from MLS (Oct. 27.49-51p4)
11405 11405 1999 CV3 from Maigurova/Nikolaev Obs. (Aug. 23.77-78p3)
09058 9058 1992 JB from CSS (Oct. 27.20-22p4)
08035 8035 1992 TB from DECam/code "!" (10) (Oct. 19.01-17p89)
05587 5587 1990 SB from CSS (Oct. 27.28-30p4)
04503 4503 Cleobulus (1989 WM) from Berthelot Obs. (Oct. 26.82-85p3) and CSS (Oct. 27.18-20p4)
04055 4055 Magellan (1985 DO2) from CSS (Oct. 27.36-38p4)
03671 3671 Dionysus (1984 KD) from CSS (Oct. 27.26p1)
02212 2212 Hephaistos (1978 SB) from CSS (Oct. 27.20-22p4)
01580 1580 Betulia (1950 KA) from MLS (Oct. 27.39-41p4)

MPEC 2020-U255 - "06:57 UT" - 2020 UN6

K20U06N 2020 UN6 (small asteroid, Q=4.415 AU, H=22.58 ~103m) was picked up at 0754 UT on 27 Oct. by AMACS1, observing it at Oct. 27.33-34p3. This detection was confirmed by PS1 (Oct. 25.49p2), Visnjan Obs. (Oct. 28.01-02p5), Great Shefford Obs. (Oct. 28.07-08p3), and Pascoli Obs. (Oct. 28.10-11p3).

MPEC 2020-U254 - "02:25 UT" - Comet C/2020 U3 (Rankin)

CK20U030 C/2020 U3 (Rankin) (q=2.276 AU, Q=126.904 AU, TP=2021 Feb. 5.97487 TT) was picked up at 0337 UT on 22 Oct. by MLS, observing it at Sept. 16.25-26p4, 28.20-21p4, Oct. 5.21-23p4, 11.15-17p4, and 22.15-17p4. This detection was confirmed by PS1 (July 21.48-51p3, 31.48-50p4, Aug. 4.52-55p4, 9.54-55p2, 29.41p1, 30.40-44p4, Sept. 2.43-44p2, 22.32-36p4 & Oct. 14.24-26p3), PS2 (Aug. 7.58-59p2, 15.51p1, 27.46p1 & Oct. 4.31-34p4), Pleasant Groves Obs. (Sept. 21.16-18p3), Steward Mt. Lemmon Sta. (Oct. 22.31-35p4 & 23.12-15p4), Visnjan Obs. (Oct. 22.77-81p3 & 27.95-96p3), Brixiis Obs. (Oct. 22.77-81p3), Sato/iTelObs-Mayhill (Oct. 23.26-27p2), Telescope Live (Oct. 23.95-97p4), GROWTH India Telescope (Oct. 24.70-71p5), and Rokycany Obs. (Oct. 24.77p2).

Observers on 28 October '20

A total of 46 observers appear in today's MPECs.

Code	Observer / observatory
`W94`	AMACS1 in Chile, 1 in MPEC 2020-U255 -- 2020 UN6
`L54`	Berthelot Obs., 1 in MPEC 2020-U256 -- 4503
`B96`	Brixiis Obs. in Belgium, 1 in MPEC 2020-U254 -- C/2020 U3
`160`	Castelmartini Obs. in Italy, 1 in MPEC 2020-U256 -- 477524
`703`	Catalina Sky Survey (CSS) in Arizona, 20 in MPEC 2020-U256 -- 2020 UX4, 2020 UN3, 2020 TY1, 2020 RV5, 2013 PY6, 2004 LU3, 68359, 65717, 53435, 480824, 414903, 194126, 162173, 152978, 9058, 5587, 4503, 4055, 3671, 2212
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 13 in MPEC 2020-U256 -- 2020 UZ5, 2020 UW2, 2020 UW1, 2020 UN3, 2020 UM3, 2020 UL3, 2020 UD, 2020 UB2, 2020 TY1, 2020 TS5, 2020 TK5, 2020 TH5, 2020 SE4
`A77`	Chante-Perdrix Obs. in France, 1 in MPEC 2020-U261 -- C/2020 U5
`970`	Chelmsford Obs. in England, 1 in MPEC 2020-U259 -- 2020 UQ6
`Z99`	Clixby Obs. in England, 7 in MPECs 2020-U256, 2020-U257, 2020-U259 & 2020-U261 -- 2020 UQ6, 2020 UO6, C/2020 U5, 2005 JT108, 2004 US1, 2002 GZ8, 2000 PQ27
`W84!`	program code "!" (10) via DECam in Chile, 2 in MPEC 2020-U256 -- 23714, 8035
`595`	Farra d'Isonzo Obs. in Italy, 2 in MPECs 2020-U257 & 2020-U259 -- 2020 UQ6, 2020 UO6
`K83`	Forti Obs., 2 in MPECs 2020-U256 & 2020-U259 -- 2020 UQ6, 2004 UR1
`W46`	Foxfire Village Obs., 4 in MPEC 2020-U256 -- 90075, 376848, 30825, 154302
`X31`	Galilei Obs., 1 in MPEC 2020-U259 -- 2020 UQ6
`K88`	GINOP-KHK in Hungary, 2 in MPEC 2020-U256 -- 2007 TG8, 452302
`J95`	Great Shefford Obs. in England, 4 in MPECs 2020-U255, 2020-U256, 2020-U257 & 2020-U259 -- 2020 UQ6, 2020 UO6, 2020 UN6, 2020 UJ4
`N51`	GROWTH India Telescope, 4 in MPECs 2020-U254, 2020-U259, 2020-U260 & 2020-U261 -- 2020 UQ6, C/2020 U5, C/2020 U4, C/2020 U3
`H06\|`	Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 3 in MPECs 2020-U254, 2020-U260 & 2020-U261 -- C/2020 U5, C/2020 U4, C/2020 U3
`I894`	M. Suzuki in Japan via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2020-U259 -- 2020 UQ6
`I896`	program code 6 via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2020-U259 -- 2020 UQ6
`P93`	JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-U259 -- 2020 UQ6
`585`	Kiev Comet Station in Ukraine, 1 in MPEC 2020-U259 -- 2020 UQ6
`381`	Kiso Obs. in Japan, 1 in MPEC 2020-U259 -- 2020 UQ6
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 28 in MPECs 2020-U254, 2020-U256, 2020-U257, 2020-U258, 2020-U260 & 2020-U261 -- 2020 UP6, 2020 UO6, 2020 UA3, C/2020 U5, C/2020 U4, C/2020 U3, 2020 TG3, 2020 ML3, 2020 LA2, 2018 VJ1, 2017 VJ2, 2016 FY14, 2015 BF4, 2013 UX14, 2013 MX5, 2012 XE17, 2008 UU95, 2003 UG22, 1998 MR24, 53435, 474179, 380321, 351331, 241596, 21374, 154302, 140333, 1580
`K74`	Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-U259 -- 2020 UQ6
`0895`	N.V. Maigurova via Nikolaev Obs. in Ukraine, 3 in MPEC 2020-U256 -- 53435, 500094, 11405
`Z80`	Northolt Branch Obs. in England, 5 in MPECs 2020-U256, 2020-U257 & 2020-U259 -- 2020 UQ6, 2020 UO6, 2020 TR5, 2020 TD8, 162173
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2020-U254, 2020-U255, 2020-U260 & 2020-U261 -- 2020 UN6, C/2020 U5, C/2020 U4, C/2020 U3
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 4 in MPECs 2020-U254, 2020-U258, 2020-U260 & 2020-U261 -- 2020 UP6, C/2020 U5, C/2020 U4, C/2020 U3
`K63`	Pascoli Obs. in Italy, 2 in MPECs 2020-U255 & 2020-U257 -- 2020 UO6, 2020 UN6
`W16`	Pleasant Groves Obs., 1 in MPEC 2020-U254 -- C/2020 U3
`L04`	ROASTERR-1 in Romania, 1 in MPEC 2020-U259 -- 2020 UQ6
`K61`	Rokycany Obs. in the Czech Republic, 1 in MPEC 2020-U254 -- C/2020 U3
`L07`	Salvatore di Giacomo Obs., 1 in MPEC 2020-U261 -- C/2020 U5
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2020-U261 -- C/2020 U5
`Q11`	Shinshiro Obs., 1 in MPEC 2020-U261 -- C/2020 U5
`G409`	B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-U261 -- C/2020 U5
`G40[`	program code "[" (25) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-U256 -- 2004 US1
`291`	Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2020-U256 -- 2017 UL7, 2017 TM6, 2017 TA6, 2017 HP3, 2016 EN1
`L39`	Spica Obs., 2 in MPECs 2020-U256 & 2020-U259 -- 2020 UQ6, 2020 UM6
`W34`	Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-U256 -- 418797
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 34 in MPECs 2020-U254, 2020-U256, 2020-U257 & 2020-U258 -- 2020 UZ, 2020 UX4, 2020 UW2, 2020 UQ2, 2020 UP6, 2020 UO6, 2020 UO4, 2020 UN5, 2020 UN1, 2020 UL3, 2020 UL1, 2020 UG4, 2020 UF6, 2020 UF, 2020 UE6, 2020 UD, 2020 UC5, 2020 UB4, 2020 UB2, 2020 UA5, C/2020 U3, 2020 TY1, 2020 TU5, 2020 TS5, 2020 TR5, 2020 TP3, 2020 TC7, 2020 SH6, 2020 SF3, 2020 SB, 2020 QU6, 2020 PP5, 2020 PK7, 2016 EL84
`Z08`	Telescope Live, 2 in MPECs 2020-U254 & 2020-U260 -- C/2020 U4, C/2020 U3
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-U256 -- 2019 TC2
`L01`	Visnjan Obs. in Croatia, 8 in MPECs 2020-U254, 2020-U255, 2020-U256, 2020-U257, 2020-U259, 2020-U260 & 2020-U261 -- 2020 UQ6, 2020 UO6, 2020 UN6, C/2020 U5, C/2020 U4, C/2020 U3, 2007 UY1, 2007 SR1
`718`	Wiggins Obs. in Utah, 1 in MPEC 2020-U259 -- 2020 UQ6
`N88`	Xingming Obs. #3, 3 in MPECs 2020-U256, 2020-U257 & 2020-U259 -- 2020 UQ6, 2020 UO6, 2020 UM6
`I41`	Zwicky Transient Facility in southern California, 1 in MPEC 2020-U259 -- 2020 UQ6

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

Impact Risk Monitoring on 28 October '20

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2359 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 UO6	NEODyS	2230	2111	3	3.05e-05	-5.97	-6.21	0	NEODyS: "Based on 39 optical observations (of which 3 are rejected as outliers) from 2020-10-27.337 to 2020-10-28.451."
2020 UO6	JPL Sentry	1700	2099-2111	4	0.0081209064966	-3.54	-3.54	0	JPL: Computed at 07:24 today Pacific time based on 38 observations spanning 1.1088 days (2020-Oct-27.341505 to 2020-Oct-28.450332). Diameter approximately 0.012 km. from weighted mean H=27.33.

2020 UX4	NEODyS	2230	2072-2120	26	3.07e-05	-5.12	-5.46	n/a	NEODyS: "Based on 47 optical observations (of which 2 are rejected as outliers) from 2020-10-22.185 to 2020-10-28.189."
2020 UX4	JPL Sentry	1700	2074-2120	16	1.877093e-05	-5.31	-5.70	0	JPL: Computed at 07:08 today Pacific time based on 46 observations spanning 6.0037 days (2020-Oct-22.18386 to 2020-Oct-28.187598). Diameter approximately 0.025 km. from weighted mean H=25.65.

2020 UO4	NEODyS	2230	2088-2120	65	1.7e-03	-4.99	-5.24	n/a	NEODyS: "Based on 58 optical observations (of which 1 are rejected as outliers) from 2020-10-23.355 to 2020-10-28.219."
2020 UO4	JPL Sentry	1700	2088-2120	43	0.0005949858164	-5.43	-5.58	0	JPL: Computed at 07:33 today Pacific time based on 58 observations spanning 4.8639 days (2020-Oct-23.354363 to 2020-Oct-28.218305). Diameter approximately 0.006 km. from weighted mean H=28.62.

2020 UL3	NEODyS	2230	2111-2118	14	2.81e-06	-5.02	-5.42	0	NEODyS: "Based on 40 optical observations (of which 1 are rejected as outliers) from 2020-10-17.537 to 2020-10-28.467."
2020 UL3	JPL Sentry	1700	2111-2118	9	2.176706e-06	-5.12	-5.48	0	JPL: Computed at 07:29 today Pacific time based on 40 observations spanning 10.930 days (2020-Oct-17.535831 to 2020-Oct-28.465939). Diameter approximately 0.079 km. from weighted mean H=23.16.

2020 UA3	NEODyS	2230	R E M O V E D						-

2020 TD8	NEODyS	2230	2045-2096	18	3.75e-06	-6.49	-6.86	0	NEODyS: "Based on 78 optical observations (of which 0 are rejected as outliers) from 2020-10-15.323 to 2020-10-27.036."
2020 TD8	JPL Sentry	1700	2045-2096	13	3.50708e-06	-6.40	-6.76	0	JPL: Computed at 07:10 today Pacific time based on 78 observations spanning 11.713 days (2020-Oct-15.322434 to 2020-Oct-27.035254). Diameter approximately 0.014 km. from weighted mean H=26.92.

2020 TK5	NEODyS	2230	2052-2058	9	4.72e-06	-4.48	-4.55	0	NEODyS: "Based on 87 optical observations (of which 2 are rejected as outliers) from 2020-10-14.332 to 2020-10-27.167."
2020 TK5	JPL Sentry	1700	2039-2056	6	3.282193e-06	-4.59	-4.69	0	JPL: Computed at 07:47 today Pacific time based on 86 observations spanning 12.835 days (2020-Oct-14.331481 to 2020-Oct-27.16655). Diameter approximately 0.063 km. from weighted mean H=23.64.

2020 TY1	NEODyS	2230	2098-2120	6	2.6e-07	-5.71	-5.84	n/a	NEODyS: "Based on 93 optical observations (of which 1 are rejected as outliers) from 2020-10-08.411 to 2020-10-28.239."
2020 TY1	JPL Sentry	1700	2098-2113	3	2.0729e-07	-5.78	-5.94	0	JPL: Computed at 07:04 today Pacific time based on 92 observations spanning 19.828 days (2020-Oct-08.410259 to 2020-Oct-28.238568). Diameter approximately 0.100 km. from weighted mean H=22.64.

2020 LV	JPL Sentry	2300	2109-2114	2	4.9723e-06	-5.89	-5.91	0	JPL: Computed at 15:38 today Pacific time based on 37 observations spanning 9.1697 days (2020-Jun-14.38305 to 2020-Jun-23.552778) including radar (1 Doppler, 2 delay). Diameter approximately 0.030 km. from weighted mean H=25.27.

2019 TC2	NEODyS	2230	2097-2120	59	1.54e-05	-6.50	-7.24	n/a	NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2019-10-05.218 to 2019-10-24.494."
2019 TC2	JPL Sentry	1700	2110-2119	35	1.8431632e-05	-6.40	-7.14	0	JPL: Computed at 07:09 today Pacific time based on 22 observations spanning 19.276 days (2019-Oct-05.21758 to 2019-Oct-24.493128). Diameter approximately 0.009 km. from weighted mean H=27.84.

2018 VC	JPL Sentry	1700	2109-2115	5	5.44606e-06	-6.35	-6.44	0	JPL: Computed at 08:24 March 17th of 2019 Pacific time based on 143 observations spanning 36.008 days (2018-Nov-01.24873 to 2018-Dec-07.257089). Diameter approximately 0.019 km. from weighted mean H=26.29.

2017 UL7	NEODyS	2230	2041-2054	2	4.69e-07	-5.62	-5.7	0	NEODyS: "Based on 38 optical observations (of which 1 are rejected as outliers) from 2017-10-11.412 to 2017-10-30.180."
2017 UL7	JPL Sentry	1700	2041-2054	2	3.6213e-07	-5.68	-5.77	0	JPL: Computed at 07:02 today Pacific time based on 37 observations spanning 18.757 days (2017-Oct-11.422837 to 2017-Oct-30.17957). Diameter approximately 0.045 km. from weighted mean H=24.39.

2017 UL6	JPL Sentry	1700	2058-2106	23	4.703432e-05	-7.85	-8.36	0	JPL: Computed at 21:11 Oct. 27th of 2017 Pacific time based on 15 observations spanning .77410 days (2017-Oct-27.2341 to 2017-Oct-28.008202). Diameter approximately 0.001 km. from weighted mean H=32.03.

2014 HR197	JPL Sentry	1700	2020-2112	189	7.37621e-08	-7.11	-8.05	0	JPL: Computed at 10:48 April 9th of 2017 Pacific time based on 15 observations spanning .95899 days (2014-Apr-24.15618 to 2014-Apr-25.11517). Diameter approximately 0.014 km. from weighted mean H=26.94.

2011 KF36	JPL Sentry	1700	2022-2106	6	9.922e-10	-5.61	-5.91	0	JPL: Computed at 09:46 April 8th of 2017 Pacific time based on 9 observations spanning 2.0159 days (2011-May-30.340411 to 2011-Jun-01.356316). Diameter approximately 0.280 km. from weighted mean H=20.43.

2009 WQ25	JPL Sentry	1700	2094-2094	1	9.290e-08	-6.54	-6.54	0	JPL: Computed at 16:40 April 9th of 2017 Pacific time based on 27 observations spanning 5.9572 days (2009-Nov-21.16281 to 2009-Nov-27.11998). Diameter approximately 0.055 km. from weighted mean H=23.94.

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 28 October '20

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

2330	Grabbed MPEC 2020-U260 - Comet C/2020 U4 (Panstarrs) - see above Grabbed MPEC 2020-U261 - Comet C/2020 U5 (Panstarrs) - see above
2300	Noted that JPL Sentry has updated its 2020 LV risk assessment - see above
2230	Noted that NEODyS has updated its 2017 UL7 risk assessment - see above Noted that NEODyS has updated its 2019 TC2 risk assessment - see above Noted that NEODyS has updated its 2020 TD8 risk assessment - see above Noted that NEODyS has updated its 2020 TK5 risk assessment - see above Noted that NEODyS has updated its 2020 TY1 risk assessment - see above Noted that NEODyS has removed 2020 UA3 as an impact risk - see above Noted that NEODyS has updated its 2020 UL3 risk assessment - see above Noted that NEODyS has updated its 2020 UO4 risk assessment - see above Noted that NEODyS has posted 2020 UO6 as an impact risk - see above Noted that NEODyS has updated its 2020 UX4 risk assessment - see above Grabbed MPEC 2020-U259 - 2020 UQ6 - see above
1700	Noted that JPL Sentry has updated its 2009 WQ25 risk assessment - see above Noted that JPL Sentry has updated its 2011 KF36 risk assessment - see above Noted that JPL Sentry has updated its 2014 HR197 risk assessment - see above Noted that JPL Sentry has updated its 2017 UL6 risk assessment - see above Noted that JPL Sentry has updated its 2017 UL7 risk assessment - see above Noted that JPL Sentry has updated its 2018 VC risk assessment - see above Noted that JPL Sentry has updated its 2019 TC2 risk assessment - see above Noted that JPL Sentry has updated its 2020 TD8 risk assessment - see above Noted that JPL Sentry has updated its 2020 TK5 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 UL3 risk assessment - see above Noted that JPL Sentry has updated its 2020 UO4 risk assessment - see above Noted that JPL Sentry has posted 2020 UO6 as an impact risk - see above Noted that JPL Sentry has updated its 2020 UX4 risk assessment - see above Grabbed MPEC 2020-U255 - 2020 UN6 - see above Grabbed MPEC 2020-U256 - Daily Orbit Update - see above Grabbed MPEC 2020-U257 - 2020 UO6 - see above Grabbed MPEC 2020-U258 - 2020 UP6 - see above
0430	Grabbed MPEC 2020-U254 - Comet C/2020 U3 (Rankin) - see above

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