2020-10-30 Tracking News

Contents on 30 October '20

IAU Minor Planet Center
- NEOCP Activity -- 27 listings
- New MPECs -- six MPECs
Observers -- 24 observers
Impact Risk Monitoring -- seven objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1206 risk-listed objects, 190 have had news in the last 31 days. Updated at 1701 UTC on 30 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 30 October '20

The MPC's NEO Confirmation Page has 27 listings

When last checked at 2355 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 27 objects listed. Of these, nineteen were "one nighters." So far The Tracking News has counted a total of 34 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 30 October '20

Minor Planet Electronic Circulars

As of last check at 2355 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-U264 time-stamped "09:51 UT" - 1999 VX15 - see below
MPEC 2020-U265 time-stamped "10:03 UT" - 2020 US6 - see below
MPEC 2020-U266 time-stamped "12:10 UT" - Daily Orbit Update - see below
MPEC 2020-U267 time-stamped "17:39 UT" - 2020 BT12 - see below
MPEC 2020-U268 time-stamped "21:11 UT" - 2020 UT6 - see below
MPEC 2020-U269 time-stamped "23:31 UT" - Comet P/2007 R2 = 2020 R8 (Gibbs)

MPEC 2020-U269 - "23:31 UT" - Comet P/2007 R2 = 2020 R8 (Gibbs)

PK20R080 P/2020 R8 (q=1.637 AU, Q=5.509 AU, TP=2020 Sept. 15.69957 TT) was picked up at 1523 UT on 11 Sept. by Korea Microlensing Telescope Network SSO (KMTNet-SSO), observing it at Sept. 11.64-72p3, 13.56p1, 13.64p1, 13.73p1, and 15.63-70p3. This detection was confirmed by Pan-STARRS 2 (PS2) (Sept. 13.50-52p3), Hidetaka Sato via iTelescope Obs. Siding Spring (Oct. 10.62-63p3), Shinshiro Obs. (Oct. 12.66-67p2), and Pan-STARRS 1 (PS1) (Oct. 20.33-37p4).
PK07R020 P/2007 R2 (Gibbs)

MPEC 2020-U268 - "21:11 UT" - 2020 UT6

K20U06T 2020 UT6 (small asteroid, H=23.3 ~74m) was picked up at 1202 UT on 25 Oct. by PS1, observing it at Oct. 9.52-55p4 at G=22.17-92, 25.50-54p4 at w=22.1-6, and 26.55-58p4 at w=22.56-79. This detection was confirmed by PS2 (Oct. 24.52-55p4) and Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Oct. 30.30-32p3 at G=22.0-22.2).

MPEC 2020-U267 - "17:39 UT" - 2020 BT12

K20B12T 2020 BT12 (q=0.236 AU, Q=4.192 AU, H=19.1 ~513m) from PS2 (2019 Dec. 27.55-56p2 at G=22.13-73, Feb. 3.44-45p2 at G=21.64-70, Oct. 14.61p1 at G=22.47 & 18.62p1 at G=23.62) and program code 5 via Discovery Channel Telescope (DCT) (Oct. 24.45-46p5 at G=22.7-23.0)

<< DOU on 30 October '20 >> MPEC 2020-U266 - "12:10 UT" - Daily Orbit Update

Observations of risk-listed objects
K20U06O 2020 UO6 (small asteroid, arc=3 days, H=27.4 ~11m, close passer) from the Spacewatch 1.8m telescope (Oct. 30.32-34p3) and Steward Obs. Mt. Lemmon Station (Oct. 30.35-36p2)
K20U03L 2020 UL3 (small asteroid, arc=13 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (Oct. 30.27-28p3)
K20T03J 2020 TJ3 (small asteroid, arc=19 days, H=24.6 ~41m, NHATS target) from Steward Mt. Lemmon Sta. (Oct. 30.15-16p2)
K20T01Y 2020 TY1 (small asteroid, arc=22 days, H=22.7 ~98m) from Steward Mt. Lemmon Sta. (Oct. 30.27p3)
Observations of recently (no longer) risk-listed objects
K20U03A 2020 UA3 (small asteroid, arc=14 days, H=26.7 ~15m, close passer, NHATS target) from Transit Dreams Obs. (Oct. 30.06-07p5)
K20T00F 2020 TF (arc=25 days, H=21.6 ~162m) from the Spacewatch 0.9m telescope (Oct. 30.06-07p3) and Steward Mt. Lemmon Sta. (Oct. 30.10p3)
Observations of close-passing objects
K20U04B 2020 UB4 (arc=8 days, H=26.4 ~18m) from Steward Mt. Lemmon Sta. (Oct. 30.37-38p3)
K20T05R 2020 TR5 (arc=20 days, H=26.2 ~19m) from Northolt Branch Obs. (Oct. 27.95-96p4) and Steward Mt. Lemmon Sta. (Oct. 30.46p2)
K18U02C 2018 UC2 (arc=3 opp, H=21.9 ~141m) from Spacewatch 1.8m (Oct. 30.39-40p3)
Observation campaigns (NHATS targets, radar support)
K20U05B 2020 UB5 (arc=10 days, H=25.0 ~34m, NHATS) from Sandlot Obs. (Oct. 30.34-37p2) and Steward Mt. Lemmon Sta. (Oct. 30.36-37p3)
K20U03N 2020 UN3 (arc=10 days, H=24.0 ~54m, NHATS) from Sandlot Obs. (Oct. 30.26-28p4)
K20U02S 2020 US2 (arc=11 days, H=23.7 ~62m, NHATS) from Steward Mt. Lemmon Sta. (Oct. 30.13-14p3)
K20U02R 2020 UR2 (arc=19 days, H=25.6 ~26m, NHATS) from Steward Mt. Lemmon Sta. (Oct. 30.18p3)
K20T09B 2020 TB9 (arc=16 days, H=25.7 ~25m, NHATS) from Spacewatch 1.8m (Oct. 30.41-42p2)
K20T08J 2020 TJ8 (arc=16 days, H=25.1 ~32m, NHATS) from Spacewatch 1.8m (Oct. 30.43-45p3)
K20R02W 2020 RW2 (arc=62 days, H=22.8 ~93m, NHATS) from Steward Mt. Lemmon Sta. (Oct. 29.49p3)
K20F15G 2020 FG15 (arc=42 days, H=23.4 ~71m, NHATS) from PS1 (April 19.34-38p4)
K17F03G 2017 FG3 (arc=2 opp, H=23.1 ~81m, NHATS) from Spacewatch 1.8m (2017 Oct. 14.25-27p2 & 2017 Oct. 16.48-49p2)
K16U31R 2016 UR31 (arc=2 opp, H=24.7 ~39m, NHATS) from Spacewatch 1.8m (Oct. 30.24-25p2)
J0166 190166 2005 UP156 (radar) from the Mt. Lemmon Survey (MLS) (Oct. 29.15-16p4)
G3693 163693 Atira (2003 CP20) (radar) from the Zwicky Transient Facility (ZTF) (Oct. 29.53-54p4)
11398 11398 1998 YP11 (radar) from ZTF (Oct. 27.36-38p2 & 29.32-35p3)
04179 4179 Toutatis (1989 AC) (radar) from ATLAS Mauna Loa (Oct. 29.22-23p3)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20U06N 2020 UN6 (Q=4.386 AU, arc=5 days, H=22.7 ~98m) from Steward Mt. Lemmon Sta. (Oct. 30.44p3)
K20U06F 2020 UF6 (arc=11 days, H=22.4 ~112m) from Steward Mt. Lemmon Sta. (Oct. 30.26p3)
K20U06E 2020 UE6 (arc=13 days, H=23.4 ~71m) from Steward Mt. Lemmon Sta. (Oct. 30.29-31p3)
K20U04G 2020 UG4 (arc=11 days, H=24.5 ~43m) from Steward Mt. Lemmon Sta. (Oct. 30.32p3)
K20U03X 2020 UX3 (arc=11 days, H=24.8 ~37m) from Steward Mt. Lemmon Sta. (Oct. 30.32-33p3)
K20T08O 2020 TO8 (arc=15 days, H=25.6 ~26m) from Steward Mt. Lemmon Sta. (Oct. 30.23p2)
K20T03P 2020 TP3 (arc=31 days, H=22.1 ~129m) from Steward Mt. Lemmon Sta. (Oct. 30.31-32p3)
K20S07R 2020 SR7 (arc=33 days, H=22.2 ~123m) from PS1 (Oct. 9.34-37p4), the Catalina Sky Survey (CSS) (Oct. 29.21-23p4), and Steward Mt. Lemmon Sta. (Oct. 30.14p3)
K20R02M 2020 RM2 (arc=52 days, H=23.7 ~62m) from Steward Mt. Lemmon Sta. (Oct. 30.33p2)
K20S01T 2020 ST1 (arc=64 days, H=21.9 ~141m) from Farra d'Isonzo Obs. (Oct. 29.84-87p3), Transit Dreams Obs. (Oct. 29.99-00p3), Steward Mt. Lemmon Sta. (Oct. 30.15p3), and Spacewatch 0.9m (Oct. 30.23-25p3)
Observations of other objects
K20U06R 2020 UR6 (arc=48 days, H=20.9 ~224m) from Steward Mt. Lemmon Sta. (Oct. 29.23p2)
K20U06J 2020 UJ6 (arc=18 days, H=19.8 ~371m) from Steward Mt. Lemmon Sta. (Oct. 29.50-52p3 & 30.40-41p2)
K20U02G 2020 UG2 (arc=13 days, H=21.6 ~162m) from Holmes/CTIO (Oct. 30.09-10p3)
K20T07A 2020 TA7 (i=41.9°, arc=15 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (Oct. 30.11-12p2)
K20T06N 2020 TN6 (arc=16 days, H=19.1 ~513m) from Steward Mt. Lemmon Sta. (Oct. 30.44-45p2)
K20T04G 2020 TG4 (Q=4.172 AU, arc=41 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (Oct. 30.27-29p3)
K20T01C 2020 TC1 (arc=23 days, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (Oct. 30.20p3)
K20T00X 2020 TX (arc=24 days, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (Oct. 30.16-17p2 at G=20.81-22.07)
K20R09Z 2020 RZ9 (Q=4.208 AU, arc=46 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (Oct. 30.22p3)
K20Q07A 2020 QA7 (Q=4.150 AU, arc=62 days, H=20.4 ~282m) from ZTF (Oct. 27.43p1, 27.47p1 & 29.37-39p2)
K20Q06U 2020 QU6 (arc=64 days, H=18.2 ~776m) from Steward Mt. Lemmon Sta. (Oct. 30.10-11p3)
K20Q06L 2020 QL6 (arc=66 days, H=19.0 ~537m) from Steward Mt. Lemmon Sta. (Oct. 30.28-29p3)
K20Q04M 2020 QM4 (arc=72 days, H=18.6 ~645m) from Steward Mt. Lemmon Sta. (Oct. 30.23-24p3)
K20P03X 2020 PX3 (arc=2 opp, H=20.3 ~295m) from MLS (2007 Nov. 14.14-16p4)
K20P01D 2020 PD1 (Q=4.135 AU, arc=129 days, H=19.3 ~467m) from ZTF (Oct. 29.27-29p3 & 29.35p1)
K20O08C 2020 OC8 (arc=137 days, H=20.7 ~245m) from Steward Mt. Lemmon Sta. (Oct. 30.19p4)
K20O07S 2020 OS7 (Q=4.461 AU, arc=105 days, H=20.3 ~295m) from Steward Mt. Lemmon Sta. (Oct. 30.09-10p3)
K20O04G 2020 OG4 (arc=99 days, H=18.5 ~676m) from Steward Mt. Lemmon Sta. (Oct. 30.25p3)
K20O02A 2020 OA2 (arc=125 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (Oct. 30.21p3)
K20K03U 2020 KU3 (i=37.5°, Q=4.395 AU, arc=161 days, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (Oct. 29.52p3)
K17V02J 2017 VJ2 (Q=4.130 AU, arc=2 opp, H=17.7 ~977m) from CSS (2008 Oct. 31.39-41p4)
K16N00F 2016 NF (arc=3 opp, H=18.2 ~776m) from Steward Mt. Lemmon Sta. (Oct. 30.08-09p3)
K16J34N 2016 JN34 (i=45.2°, arc=3 opp, H=20.4 ~282m) from Steward Mt. Lemmon Sta. (Oct. 30.42p3)
K14UB6R 2014 UR116 (arc=6 opp, H=19.8 ~371m) from SATINO-1 (Oct. 17.06-07p3)
K14B33D 2014 BD33 (i=66.0°, Q=4.744 AU, arc=3 opp, H=17.2 ~1.23 km) from Spacewatch 1.8m (2017 Aug. 15.19-22p2)
K13U14X 2013 UX14 (arc=4 opp, H=18.3 ~741m) from Al Sadeem Obs. (Oct. 22.82-85p5 & 23.83-86p5) and Transit Dreams Obs. (Oct. 30.12-14p3)
K09U00M 2009 UM from Eden Obs. (Oct. 27.62-74p10)
K06UI5L 2006 UL185 (arc=6 opp, H=21.1 ~204m) from Spacewatch 1.8m (Oct. 30.37-38p2)
K05JA8T 2005 JT108 (arc=6 opp, H=19.4 ~446m) from Eden Obs. (Oct. 26.67-69p3)
K04U01S 2004 US1 (arc=2 opp, H=20.8 ~234m) from Muensterschwarzach Obs. (Oct. 27.82-83p5)
K04U01R 2004 UR1 (arc=4 opp, H=20.5 ~269m) from Spacewatch 0.9m (Oct. 30.13-14p3)
K04L03U 2004 LU3 (arc=5 opp, H=18.4 ~708m) from CSS (Oct. 29.29-31p4)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.5 ~676m) from PS2 (Oct. 25.50-54p4) and Northolt Branch Obs. (Oct. 27.89-90p2)
J99V15X 1999 VX15 (Q=4.807 AU, arc=2 opp, H=18.8 ~589m) from PS2 (Sept. 26.52-56p4 at G=21.10-22.15)
p3125 513125 1997 GC32 from MLS (Oct. 29.46-47p4)
m2505 482505 2012 TQ78 from MLS (Oct. 29.35-37p4)
m0824 480824 1999 JO6 from ZTF (Oct. 28.26p1, 28.30p2 & 28.40p2)
h8902 438902 2009 WF104 from MLS (Oct. 29.40-41p3)
g8086 428086 2006 NM from ZTF (Oct. 28.29-34p3 & 28.43p1)
f7201 417201 2005 XM4 from MLS (Oct. 29.48-49p3 at G=21.00-22.06)
f6694 416694 2004 YR32 from MLS (Oct. 29.41-43p4)
f5027 415027 2011 SG5 from MLS (Oct. 29.07-08p3)
f4903 414903 2010 XT45 from ZTF (Oct. 28.31p2 & 28.42p2)
c2625 382625 2002 PC130 from ZTF (Oct. 29.10-16p4)
Y5705 345705 2006 VB14 from CSS (Oct. 29.07-08p3)
S3729 283729 2002 UX from ZTF (Oct. 27.35p1, 27.39p1, 27.46p1, 27.51p1 & 29.49-52p2)
Q7720 267720 2003 CA from MLS (Oct. 29.50-53p4)
N2382 232382 2003 BT47 from MLS (Oct. 29.50-52p3)
J0208 190208 2006 AQ from CSS (Oct. 29.44-46p4)
I5716 185716 1998 SF35 from CSS (Oct. 29.27-29p4)
G3902 163902 2003 SW222 from Al Sadeem Obs. (Oct. 27.87-91p5) and CSS (Oct. 29.33-35p4)
G3081 163081 2002 AG29 from ZTF (Oct. 29.11-15p4)
G2173 162173 Ryugu (1999 JU3) from ZTF (Oct. 27.10-14p3, 27.25p1, 27.32p1 & 29.21-22p4)
F2978 152978 2000 GJ147 from CSS (Oct. 29.38-39p4)
D8947 138947 2001 BA40 from ZTF (Oct. 29.49-52p4)
D7925 137925 2000 BJ19 from MLS (Oct. 29.50-52p3)
90075 90075 2002 VU94 from CSS (Oct. 29.08-10p4) and MLS (Oct. 29.18-19p4)
89355 89355 2001 VS78 from MLS (Oct. 29.44-45p4)
88188 88188 2000 XH44 from ZTF (Oct. 27.35p1, 27.39p1 & 27.46-49p2)
85804 85804 1998 WQ5 from ZTF (Oct. 27.10-13p2 & 29.12-16p2)
65717 65717 1993 BX3 from ZTF (Oct. 28.30p2 & 28.38p2)
53435 53435 1999 VM40 from CSS (Oct. 29.42-43p4)
31669 31669 1999 JT6 from MLS (Oct. 29.50-52p4)
30825 30825 1990 TG1 from MLS (Oct. 29.12-14p4) and ATLAS Mauna Loa (Oct. 29.25-27p3)
24761 24761 Ahau (1993 BW2) from ZTF (Oct. 27.53-54p4)
21088 21088 Chelyabinsk (1992 BL2) from AHS Obs. (Oct. 29.52-53p3)
16834 16834 1997 WU22 from CSS (Oct. 29.31-33p4)
12711 12711 Tukmit (1991 BB) from ZTF (Oct. 27.53-54p4)
11405 11405 1999 CV3 from ATLAS Mauna Loa (Oct. 29.25-28p4)
08037 8037 1993 HO1 from CSS (Oct. 29.44-46p4) and AHS Obs. (Oct. 29.52-53p3)
08014 8014 1990 MF from CSS (Oct. 29.23-24p4)
07977 7977 1977 QQ5 from ATLAS Mauna Loa (Oct. 29.21-23p4)
05587 5587 1990 SB from CSS (Oct. 29.23-25p4)
04947 4947 Ninkasi (1988 TJ1) from CSS (Oct. 29.12-13p3)
04055 4055 Magellan (1985 DO2) from CSS (Oct. 29.36-37p4)
03908 3908 Nyx (1980 PA) from ATLAS Mauna Loa (Oct. 29.23-27p4)
03691 3691 Bede (1982 FT) from ZTF (Oct. 29.11-16p3 & 29.24p1) and ATLAS Mauna Loa (Oct. 29.29-33p7)
03122 3122 Florence (1981 ET3) from ZTF (Oct. 27.53-54p4 & 29.53-54p4) and MLS (Oct. 29.50-53p4)
01685 1685 Toro (1948 OA) from ZTF (Oct. 27.53-54p4)

MPEC 2020-U265 - "10:03 UT" - 2020 US6

K20U06S 2020 US6 (Q=4.375 AU, H=20.82 ~232m) was picked up at 0731 UT on 16 Oct. by PS1, observing it at Oct. 16.31-34p4 at w=21.34-22.41. This detection was confirmed by Mt. John Obs. (Oct. 17.49-50p3 & 19.46-47p2) and Holmes/CTIO (Oct. 30.04-07p3 at G=22.0-22.2).

MPEC 2020-U264 - "09:51 UT" - 1999 VX15

J99V15X 1999 VX15 (Q=4.807 AU, H=18.86 ~572m) from MLS (Oct. 14.38-39p4 & 29.35-37p4) and Steward Mt. Lemmon Sta. (Oct. 29.46-47p3 & 30.34p2)

Observers on 30 October '20

A total of 24 observers appear in today's MPECs.

Code	Observer / observatory
`U71`	AHS Obs., 2 in MPEC 2020-U266 -- 21088, 8037
`M43`	Al Sadeem Obs. in Abu Dhabi, 2 in MPEC 2020-U266 -- 2013 UX14, 163902
`T08`	ATLAS Mauna Loa in Hawaii, 6 in MPEC 2020-U266 -- 30825, 11405, 7977, 4179, 3908, 3691
`703`	Catalina Sky Survey (CSS) in Arizona, 16 in MPEC 2020-U266 -- 2020 SR7, 2017 VJ2, 2004 LU3, 90075, 53435, 345705, 190208, 185716, 16834, 163902, 152978, 8037, 8014, 5587, 4947, 4055
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2020-U265, 2020-U266 & 2020-U268 -- 2020 UT6, 2020 US6, 2020 UG2
`G375`	program code 5 via Discovery Channel Telescope in Arizona, 1 in MPEC 2020-U267 -- 2020 BT12
`N31`	Eden Obs., 2 in MPEC 2020-U266 -- 2009 UM, 2005 JT108
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-U266 -- 2020 ST1
`Q621`	Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-U269 -- P/2020 R8
`Q57`	Korea Microlensing Telescope Network SSO in New South Wales, 1 in MPEC 2020-U269 -- P/2020 R8
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2020-U265 -- 2020 US6
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 17 in MPECs 2020-U264 & 2020-U266 -- 2020 PX3, 1999 VX15, 90075, 89355, 513125, 482505, 438902, 417201, 416694, 415027, 31669, 30825, 267720, 232382, 190166, 137925, 3122
`K74`	Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-U266 -- 2004 US1
`Z80`	Northolt Branch Obs. in England, 2 in MPEC 2020-U266 -- 2020 TR5, 2002 GZ8
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2020-U265, 2020-U266, 2020-U268 & 2020-U269 -- 2020 UT6, 2020 US6, 2020 SR7, P/2020 R8, 2020 FG15
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 5 in MPECs 2020-U266, 2020-U267, 2020-U268 & 2020-U269 -- 2020 UT6, P/2020 R8, 2020 BT12, 2002 GZ8, 1999 VX15
`H36`	Sandlot Obs. in Kansas, 2 in MPEC 2020-U266 -- 2020 UN3, 2020 UB5
`C95`	SATINO-1 in France, 1 in MPEC 2020-U266 -- 2014 UR116
`Q11`	Shinshiro Obs., 1 in MPEC 2020-U269 -- P/2020 R8
`691`	Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2020-U266 -- 2020 TF, 2020 ST1, 2004 UR1
`291`	Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2020-U266 -- 2020 UO6, 2020 TJ8, 2020 TB9, 2018 UC2, 2017 FG3, 2016 UR31, 2014 BD33, 2006 UL185
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 40 in MPECs 2020-U264 & 2020-U266 -- 2020 UX3, 2020 US2, 2020 UR6, 2020 UR2, 2020 UO6, 2020 UN6, 2020 UL3, 2020 UJ6, 2020 UG4, 2020 UF6, 2020 UE6, 2020 UB5, 2020 UB4, 2020 TY1, 2020 TX, 2020 TR5, 2020 TP3, 2020 TO8, 2020 TN6, 2020 TJ3, 2020 TG4, 2020 TF, 2020 TC1, 2020 TA7, 2020 ST1, 2020 SR7, 2020 RZ9, 2020 RW2, 2020 RM2, 2020 QU6, 2020 QM4, 2020 QL6, 2020 OS7, 2020 OG4, 2020 OC8, 2020 OA2, 2020 KU3, 2016 NF, 2016 JN34, 1999 VX15
`W33`	Transit Dreams Obs., 3 in MPEC 2020-U266 -- 2020 UA3, 2020 ST1, 2013 UX14
`I41`	Zwicky Transient Facility (ZTF) in southern California, 20 in MPEC 2020-U266 -- 2020 QA7, 2020 PD1, 88188, 85804, 65717, 480824, 428086, 414903, 382625, 283729, 24761, 163693, 163081, 162173, 138947, 12711, 11398, 3691, 3122, 1685

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

Impact Risk Monitoring on 30 October '20

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2356 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	JPL Sentry	1700	R E M O V E D						JPL: Risk listing removed at 1459 UTC today
2020 UO6	NEODyS	1700	R E M O V E D						-

2020 UL3	JPL Sentry	1700	2111-2118	6	2.47654e-06	-5.07	-5.44	0	JPL: Computed at 08:04 today Pacific time based on 45 observations spanning 12.739 days (2020-Oct-17.535831 to 2020-Oct-30.275045). Diameter approximately 0.079 km. from weighted mean H=23.16.
2020 UL3	NEODyS	1700	2111-2120	17	3.86e-06	-4.88	-5.31	n/a	NEODyS: "Based on 45 optical observations (of which 1 are rejected as outliers) from 2020-10-17.537 to 2020-10-30.276."

2020 TJ3	JPL Sentry	1700	2067-2120	33	7.3726208e-05	-4.11	-4.72	0	JPL: Computed at 08:15 today Pacific time based on 57 observations spanning 18.986 days (2020-Oct-11.171145 to 2020-Oct-30.157294). Diameter approximately 0.042 km. from weighted mean H=24.55.
2020 TJ3	NEODyS	1700	2067-2120	59	7.42e-05	-4.13	-4.56	n/a	NEODyS: "Based on 57 optical observations (of which 1 are rejected as outliers) from 2020-10-11.172 to 2020-10-30.158."

2020 TY1	JPL Sentry	1700	2098-2113	3	1.86331e-07	-5.84	-5.88	0	JPL: Computed at 08:00 today Pacific time based on 98 observations spanning 21.858 days (2020-Oct-08.410259 to 2020-Oct-30.268344). Diameter approximately 0.100 km. from weighted mean H=22.65.

2014 HR197	JPL Sentry	1700	2021-2112	188	7.33353e-08	-7.08	-7.99	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.

2010 VR139	JPL Sentry	1700	2024-2076	13	2.06067e-08	-8.36	-8.99	0	JPL: Computed at 11:46 April 7th of 2017 Pacific time based on 7 observations spanning .06429 days (2010-Nov-14.33679 to 2010-Nov-14.40108). Diameter approximately 0.015 km. from weighted mean H=26.71.

2008 VL	JPL Sentry	1700	2021-2116	632	1.1563129e-05	-6.27	-7.32	0	JPL: Computed at 10:17 April 8th of 2017 Pacific time based on 8 observations spanning .12404 days (2008-Nov-02.31035 to 2008-Nov-02.43439). Diameter approximately 0.009 km. from weighted mean H=27.96.

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 30 October '20

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

2334	Grabbed MPEC 2020-U269 - Comet P/2007 R2 = 2020 R8 (Gibbs) - see above
2130	Grabbed MPEC 2020-U268 - 2020 UT6 - see above
1801	Grabbed MPEC 2020-U267 - 2020 BT12 - see above
1700	Noted that JPL Sentry has updated its 2008 VL risk assessment - see above Noted that JPL Sentry has updated its 2010 VR139 risk assessment - see above Noted that JPL Sentry has updated its 2014 HR197 risk assessment - see above Noted that JPL Sentry has updated its 2020 TJ3 risk assessment - see above Noted that NEODyS has updated its 2020 TJ3 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 NEODyS has updated its 2020 UL3 risk assessment - see above Noted that JPL Sentry has removed 2020 UO6 as an impact risk - see above Noted that NEODyS has removed 2020 UO6 as an impact risk - see above Grabbed MPEC 2020-U264 - 1999 VX15 - see above Grabbed MPEC 2020-U265 - 2020 US6 - see above Grabbed MPEC 2020-U266 - Daily Orbit Update - see above

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