2020-11-29 Tracking News

Contents on 29 November '20

IAU Minor Planet Center
- NEOCP Activity -- 20 listings
- New MPECs -- three MPECs
Observers -- 23 observers
Impact Risk Monitoring -- four objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1224 risk-listed objects, 195 have had news in the last 31 days. Updated at 1901 UTC on 29 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 29 November '20

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, ten were "one nighters." So far The Tracking News has counted a total of 24 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 29 November '20

Minor Planet Electronic Circulars

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

MPEC 2020-W185 time-stamped "11:09 UT" - 2008 YJ2 - see below
MPEC 2020-W186 time-stamped "12:10 UT" - Daily Orbit Update - see below
MPEC 2020-W187 time-stamped "21:30 UT" - 2012 XE133

MPEC 2020-W187 - "21:30 UT" - 2012 XE133

K12XD3E 2012 XE133 (small asteroid, Earth MOID=0.9 LD, H=23.4 ~71m) from Pan-STARRS 2 (PS2) (Nov. 26.62p1), the Mt. Lemmon Survey (MLS) (Nov. 29.40-41p3), and Steward Obs. Mt. Lemmon Station (Nov. 29.49-50p4)

<< DOU on 29 November '20 >> MPEC 2020-W186 - "12:10 UT" - Daily Orbit Update

Observations of risk-listed objects
K20W03B 2020 WB3 (Q=4.129 AU, arc=8 days, H=20.3 ~295m) from Steward Mt. Lemmon Sta. (Nov. 29.07-08p4)
Observations of recently (no longer) risk-listed objects
K20W00G 2020 WG (arc=13 days, H=21.6 ~162m) from Steward Mt. Lemmon Sta. (Nov. 29.14-15p4)
Observations of close-passing objects
K20W03Y 2020 WY3 (arc=6 days, H=27.8 ~9m, NHATS target) from Steward Mt. Lemmon Sta. (Nov. 29.32p4)
K20W03X 2020 WX3 (arc=6 days, H=27.3 ~12m) from Steward Mt. Lemmon Sta. (Nov. 29.37p3)
K20W03W 2020 WW3 (arc=9 days, H=25.6 ~26m) from Steward Mt. Lemmon Sta. (Nov. 29.19-20p3)
K17W16J 2017 WJ16 (Q=0.999 AU, arc=2 opp, H=24.5 ~43m, NHATS target) from Muensterschwarzach Obs. (Nov. 27.69-70p4)
Observation campaigns (NHATS targets, radar support)
K20V05X 2020 VX5 (arc=16 days, H=23.4 ~71m, NHATS) from Steward Mt. Lemmon Sta. (Nov. 29.12p4)
K20U04E 2020 UE4 (arc=40 days, H=23.5 ~68m, NHATS) from Steward Mt. Lemmon Sta. (Nov. 29.16-17p3)
K20T08J 2020 TJ8 (arc=46 days, H=25.1 ~32m, NHATS) from Steward Mt. Lemmon Sta. (Nov. 29.26-27p4)
K20S00O 2020 SO (NHATS) from Northolt Branch Obs. (Nov. 25.93-94p3 & 26.84-85p3) and Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Nov. 29.08p4)
G3693 163693 Atira (2003 CP20) (radar) from ATLAS Mauna Loa (Nov. 28.62-63p4)
04179 4179 Toutatis (1989 AC) (radar) from ATLAS Haleakala (Nov. 28.23-26p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20W04V 2020 WV4 (arc=6 days, H=24.3 ~47m) from Steward Mt. Lemmon Sta. (Nov. 29.33-34p4)
K20W04P 2020 WP4 (arc=6 days, H=22.1 ~129m) from GINOP-KHK (Nov. 25.80-81p3) and Steward Mt. Lemmon Sta. (Nov. 29.37-38p4)
K20W04E 2020 WE4 (arc=6 days, H=23.5 ~68m) from Steward Mt. Lemmon Sta. (Nov. 29.34-35p4)
K20W03J 2020 WJ3 (i=48.8°, arc=5 days, H=23.2 ~78m) from GINOP-KHK (Nov. 24.94p2)
K20W02U 2020 WU2 (Q=4.811 AU, arc=9 days, H=22.8 ~93m) from Steward Mt. Lemmon Sta. (Nov. 29.24-25p2)
K20W02F 2020 WF2 (Q=4.239 AU, arc=10 days, H=22.1 ~129m) from Steward Mt. Lemmon Sta. (Nov. 29.14p3)
K20W00Q 2020 WQ (arc=40 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (Nov. 29.38p2)
K20W00K 2020 WK (arc=18 days, H=25.7 ~25m) from Steward Mt. Lemmon Sta. (Nov. 29.41-44p2)
K20V01X 2020 VX1 (arc=19 days, H=22.8 ~93m) from Steward Mt. Lemmon Sta. (Nov. 29.21-22p4)
K20T07T 2020 TT7 (arc=46 days, H=22.3 ~117m) from Steward Mt. Lemmon Sta. (Nov. 29.39-40p4)
K20R11Q 2020 RQ11 (arc=77 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (Nov. 29.18p4)
K20R06O 2020 RO6 (arc=77 days, H=22.5 ~107m) from Steward Mt. Lemmon Sta. (Nov. 29.09-10p4)
K20P07K 2020 PK7 (arc=132 days, H=23.3 ~74m) from Steward Mt. Lemmon Sta. (Nov. 29.36-37p3)
K16W07Z 2016 WZ7 (arc=3 opp, H=23.0 ~85m) from MLS (Nov. 28.29-31p4)
K10F07D 2010 FD7 (Q=4.357 AU, arc=29 days, H=22.1 ~129m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2010 March 24.57-58p3)
K20W02E 2020 WE2 (arc=18 days, H=21.9 ~141m) from Steward Mt. Lemmon Sta. (Nov. 29.29p4)
K20T04M 2020 TM4 (Q=4.140 AU, arc=48 days, H=21.9 ~141m) from Steward Mt. Lemmon Sta. (Nov. 29.45-46p4)
Observations of other objects
K20W05C 2020 WC5 (arc=4 days, H=20.1 ~323m) from Steward Mt. Lemmon Sta. (Nov. 29.47p4)
K20W02T 2020 WT2 (arc=9 days, H=21.1 ~204m) from Steward Mt. Lemmon Sta. (Nov. 28.50p3 & 29.44p4)
K20W02H 2020 WH2 (Q=4.552 AU, arc=11 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (Nov. 28.53-54p3 & 29.44-45p4)
K20V05Z 2020 VZ5 (arc=15 days, H=21.0 ~214m) from Steward Mt. Lemmon Sta. (Nov. 29.48p4)
K20V03N 2020 VN3 (arc=19 days, H=20.1 ~323m) from Steward Mt. Lemmon Sta. (Nov. 29.48-49p3)
K20V03M 2020 VM3 (arc=19 days, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (Nov. 29.35-36p4)
K20V01M 2020 VM1 (i=45.2°, arc=21 days, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (Nov. 29.15-16p3 at G=22.53)
K20U03Z 2020 UZ3 (arc=80 days, H=20.4 ~282m) from Castelmartini Obs. (Nov. 19.79p3) and MLS (Nov. 28.16-18p4)
K20T04G 2020 TG4 (Q=4.171 AU, arc=71 days, H=20.1 ~323m) from the Zwicky Transient Facility (ZTF) (Nov. 26.33p1, 26.43p1, 28.24p1 & 28.29p1), ATLAS Mauna Loa (Nov. 28.34-35p3), and Pin Oak Obs. (Nov. 29.21-25p2)
K20R09O 2020 RO9 (Q=4.238 AU, arc=75 days, H=18.4 ~708m) from MLS (Nov. 28.42-43p4)
K20R00U 2020 RU (Q=4.833 AU, arc=90 days, H=19.3 ~467m) from Pan-STARRS 1 (PS1) (Nov. 28.51-54p4)
K20Q06U 2020 QU6 (arc=94 days, H=18.2 ~776m) from Steward Mt. Lemmon Sta. (Nov. 29.17-18p4)
K20Q06Q 2020 QQ6 (Q=4.107 AU, arc=108 days, H=19.7 ~389m) from Steward Mt. Lemmon Sta. (Nov. 29.19-20p4)
K20Q04M 2020 QM4 (arc=102 days, H=18.6 ~645m) from Steward Mt. Lemmon Sta. (Nov. 29.29-34p4)
K20P01D 2020 PD1 (Q=4.135 AU, arc=160 days, H=19.3 ~467m) from Steward Mt. Lemmon Sta. (Nov. 29.29-32p4)
K20O02Q 2020 OQ2 (arc=153 days, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (Nov. 28.53p2)
K20H06D 2020 HD6 (arc=2 opp, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (Nov. 29.11p3)
K17V12T 2017 VT12 (arc=4 opp, H=20.4 ~282m) from Muensterschwarzach Obs. (Nov. 27.70-72p4)
K17S19E 2017 SE19 (arc=3 opp, H=19.8 ~371m) from Herrenberg Obs. (Nov. 28.72-73p4)
K14J57H 2014 JH57 (Q=6.247 AU, arc=5 opp, H=16.2 ~1.95 km) from ZTF (Nov. 28.54-56p5)
K13U14X 2013 UX14 (arc=4 opp, H=18.3 ~741m) from Wickede Obs. (Nov. 27.80p6), Muensterschwarzach Obs. (Nov. 27.84-86p4), ATLAS Mauna Loa (Nov. 28.34-38p4), and Pin Oak Obs. (Nov. 29.22-26p2)
K12U68M 2012 UM68 (arc=4 opp, H=19.1 ~513m) from MLS (Nov. 28.41-43p4)
K12T00T 2012 TT (i=37.4°, arc=4 opp, H=18.0 ~851m) from MLS (Nov. 28.53-54p4 at G=21.29-22.08)
K12S22A 2012 SA22 (arc=3 opp, H=18.1 ~812m) from ZTF (Nov. 26.37p1, 26.45p1, 28.24p1 & 28.28p1)
K09L02W 2009 LW2 (arc=5 opp, H=19.7 ~389m) from MLS (Nov. 28.53-54p4)
K07T08G 2007 TG8 (Q=4.305 AU, arc=3 opp, H=18.6 ~645m) from the Catalina Sky Survey (CSS) (Nov. 28.51-53p3)
K03Y17P 2003 YP17 (arc=4 opp, H=19.0 ~537m) from ZTF (Nov. 26.39-41p2 & 28.43-45p2)
K03U05B 2003 UB5 (Q=4.176 AU, arc=3 opp, H=19.3 ~467m) from MLS (Nov. 28.50-51p4)
K02T67S 2002 TS67 (arc=6 opp, H=19.1 ~513m) from Pin Oak Obs. (Nov. 29.24p1 & 29.29p1)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.6 ~645m) from CSS (Nov. 28.24-25p4) and Pin Oak Obs. (Nov. 29.23-27p2)
J99V15X 1999 VX15 (Q=4.807 AU, arc=2 opp, H=18.8 ~589m) from ZTF (Nov. 28.25p3 & 28.40-45p3)
p3125 513125 1997 GC32 from ATLAS Mauna Loa (Nov. 28.37-39p4)
o8767 508767 1993 BD2 from MLS (Nov. 28.37-39p4)
m2505 482505 2012 TQ78 from CSS (Nov. 28.23-25p3)
l4554 474554 2003 YQ94 from Castelmartini Obs. (Nov. 19.75-76p3) and CSS (Nov. 28.13-14p4)
l4179 474179 1999 VS6 from CSS (Nov. 28.08-10p3)
k5749 465749 2009 WO6 from ATLAS Mauna Loa (Nov. 28.44-46p4)
j2307 452307 Manawydan (1997 XV11) from ZTF (Nov. 26.28p1)
i9107 449107 2012 VJ82 from MLS (Nov. 28.31-33p4)
h8902 438902 2009 WF104 from MLS (Nov. 28.29-31p4)
g8086 428086 2006 NM from Pin Oak Obs. (Nov. 29.07p1, 29.13p1 & 29.18p1)
f8797 418797 2008 VF from Castelmartini Obs. (Nov. 19.82-83p3)
f7581 417581 2006 VA3 from MLS (Nov. 28.46-47p4)
f7201 417201 2005 XM4 from MLS (Nov. 28.37-39p4)
f6694 416694 2004 YR32 from MLS (Nov. 28.31-32p3)
f5029 415029 2011 UL21 from CSS (Nov. 28.24-26p3)
f3192 413192 2002 VY94 from ZTF (Nov. 28.55-56p4)
c0359 380359 2002 TN30 from CSS (Nov. 28.37-39p4)
Z2143 352143 2007 LR32 from ZTF (Nov. 24.42-46p2, 28.38p1 & 28.42p1)
Y1816 341816 2007 YK from MLS (Nov. 28.52-53p4)
O1596 241596 1998 XM2 from ATLAS Mauna Loa (Nov. 28.39-42p4)
I6822 186822 2004 FE31 from ATLAS Haleakala (Nov. 28.30-32p4) and Geyserland Obs. (Nov. 28.41p1)
I5716 185716 1998 SF35 from Blue Mountains Obs. (Nov. 27.72p4) and ATLAS Haleakala (Nov. 28.49-51p4)
G3902 163902 2003 SW222 from CSS (Nov. 28.21-23p4) and Pin Oak Obs. (Nov. 29.09p1, 29.15p1 & 29.20p1)
G2781 162781 2000 XL44 from MLS (Nov. 28.46-48p4)
G2186 162186 1999 OP3 from CSS (Nov. 28.37-38p4) and ATLAS Mauna Loa (Nov. 28.49-51p4)
G2173 162173 Ryugu (1999 JU3) from Southern Utsunomiya (Nov. 28.35-38p10)
G2039 162039 1996 JG from ATLAS Mauna Loa (Nov. 28.44-46p4)
F9402 159402 1999 AP10 from program code 1 via Kuban State Univ. Obs. (Nov. 28.68-78p33)
F5340 155340 2006 SK198 from ZTF (Nov. 26.54-56p2 & 28.54-56p4)
F4302 154302 2002 UQ3 from Pin Oak Obs. (Nov. 29.04p1, 29.10p1 & 29.16p1)
F2931 152931 2000 EA107 from ZTF (Nov. 26.55-56p2 & 28.54-56p8)
F2787 152787 1999 TB10 from MLS (Nov. 28.53-54p4)
E4411 144411 2004 EW9 from Pin Oak Obs. (Nov. 29.06p1, 29.12p1 & 29.17p1)
E2348 142348 2002 RX211 from MLS (Nov. 28.50-51p4)
E1052 141052 2001 XR1 from PS1 (Nov. 28.32-37p4)
D8947 138947 2001 BA40 from ATLAS Mauna Loa (Nov. 28.39-42p4)
D8095 138095 2000 DK79 from Geyserland Obs. (Nov. 29.37p1)
D7032 137032 1998 UO1 from ZTF (Nov. 28.09-10p2 & 28.15-16p2) and CSS (Nov. 28.13-14p3)
99799 99799 2002 LJ3 from MLS (Nov. 28.50-51p4 at G=20.98-22.15)
98943 98943 2001 CC21 from MLS (Nov. 28.50-51p4)
90075 90075 2002 VU94 from CSS (Nov. 28.13-15p4)
89355 89355 2001 VS78 from ATLAS Mauna Loa (Nov. 28.44-46p4)
88188 88188 2000 XH44 from ZTF (Nov. 26.36-37p2, 28.40p1 & 28.52p1)
87684 87684 2000 SY2 from ATLAS Haleakala (Nov. 28.32-37p8)
85804 85804 1998 WQ5 from ZTF (Nov. 26.09p1, 26.13p1 & 28.07-08p2)
85275 85275 1994 LY from Blue Mountains Obs. (Nov. 27.70-74p6) and ATLAS Haleakala (Nov. 28.45-47p4)
65717 65717 1993 BX3 from Blue Mountains Obs. (Nov. 27.68-69p6) and Pin Oak Obs. (Nov. 29.08p1, 29.14p1 & 29.19p1)
53435 53435 1999 VM40 from CSS (Nov. 28.32-34p4)
33342 33342 1998 WT24 from CSS (Nov. 28.50-51p3)
31669 31669 1999 JT6 from ZTF (Nov. 28.54-56p5)
29075 29075 1950 DA from MLS (Nov. 28.44-45p4)
21374 21374 1997 WS22 from PS1 (Nov. 28.46-49p3)
21088 21088 Chelyabinsk (1992 BL2) from MLS (Nov. 28.38-39p4)
12538 12538 1998 OH from ATLAS Haleakala (Nov. 28.56-57p2 & 28.63p1)
08567 8567 1996 HW1 from ATLAS Mauna Loa (Nov. 28.48-50p4)
08507 8507 1991 CB1 from MLS (Nov. 28.27-28p4)
08037 8037 1993 HO1 from ATLAS Mauna Loa (Nov. 28.58-60p4)
07822 7822 1991 CS from ZTF (Nov. 28.55-56p4)
07753 7753 1988 XB from ATLAS Mauna Loa (Nov. 28.48-51p4)
07350 7350 1993 VA from ZTF (Nov. 28.54-56p4)
06053 6053 1993 BW3 from ATLAS Mauna Loa (Nov. 28.19-20p3)
05143 5143 Heracles (1991 VL) from ZTF (Nov. 26.12-15p2, 28.10p1 & 28.15p1)
05131 5131 1990 BG from ATLAS Mauna Loa (Nov. 28.58-60p4)
04953 4953 1990 MU from ATLAS Haleakala (Nov. 28.32-37p4)
04947 4947 Ninkasi (1988 TJ1) from CSS (Nov. 28.06-07p2)
04544 4544 Xanthus (1989 FB) from MLS (Nov. 28.53-54p4)
04486 4486 Mithra (1987 SB) from SATINO-1 (Aug. 20.04-07p3)
04055 4055 Magellan (1985 DO2) from Blue Mountains Obs. (Nov. 27.69-73p8) and ATLAS Haleakala (Nov. 28.46-48p4)
02368 2368 Beltrovata (1977 RA) from ATLAS Mauna Loa (Nov. 28.38-40p4)
01866 1866 Sisyphus (1972 XA) from ATLAS Mauna Loa (Nov. 28.64-65p4)
01036 1036 Ganymed (1924 TD) from ZTF (Nov. 26.39-40p2, 28.43-46p3 & 28.52p1)
00887 887 Alinda (1918 DB) from CSS (Nov. 28.10-12p4) and ATLAS Haleakala (Nov. 28.30-31p3 & 28.37p1)

MPEC 2020-W185 - "11:09 UT" - 2008 YJ2

K08Y02J 2008 YJ2 (H=21.1 ~204m) from MLS (Nov. 15.42-43p2 & 28.38-39p3), Steward Mt. Lemmon Sta. (Nov. 28.46-47p3, 28.52p3 & 29.42p4), and Sandlot Obs. (Nov. 28.49-50p3)

Observers on 29 November '20

A total of 23 observers appear in today's MPECs.

Code	Observer / observatory
`T05`	ATLAS Haleakala in Hawaii, 9 in MPEC 2020-W186 -- 87684, 85275, 186822, 185716, 12538, 4953, 4179, 4055, 887
`T08`	ATLAS Mauna Loa in Hawaii, 17 in MPEC 2020-W186 -- 2020 TG4, 2013 UX14, 89355, 513125, 465749, 241596, 163693, 162186, 162039, 138947, 8567, 8037, 7753, 6053, 5131, 2368, 1866
`Q68`	Blue Mountains Obs. in New South Wales, 4 in MPEC 2020-W186 -- 85275, 65717, 185716, 4055
`160`	Castelmartini Obs. in Italy, 3 in MPEC 2020-W186 -- 2020 UZ3, 474554, 418797
`703`	Catalina Sky Survey (CSS) in Arizona, 15 in MPEC 2020-W186 -- 2007 TG8, 2002 GZ8, 90075, 53435, 482505, 474554, 474179, 415029, 380359, 33342, 163902, 162186, 137032, 4947, 887
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2020-W186 -- 2020 SO
`E89`	Geyserland Obs. in New Zealand, 2 in MPEC 2020-W186 -- 186822, 138095
`K88`	GINOP-KHK in Hungary, 2 in MPEC 2020-W186 -- 2020 WP4, 2020 WJ3
`240`	Herrenberg Obs. in Germany, 1 in MPEC 2020-W186 -- 2017 SE19
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-W186 -- 159402
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 25 in MPECs 2020-W185, 2020-W186 & 2020-W187 -- 2020 UZ3, 2020 RO9, 2016 WZ7, 2012 XE133, 2012 UM68, 2012 TT, 2009 LW2, 2008 YJ2, 2003 UB5, 99799, 98943, 508767, 449107, 438902, 417581, 417201, 416694, 341816, 29075, 21088, 162781, 152787, 142348, 8507, 4544
`K74`	Muensterschwarzach Obs. in Germany, 3 in MPEC 2020-W186 -- 2017 WJ16, 2017 VT12, 2013 UX14
`Z80`	Northolt Branch Obs. in England, 1 in MPEC 2020-W186 -- 2020 SO
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 3 in MPEC 2020-W186 -- 2020 RU, 21374, 141052
`F52`	Pan-STARRS 2 in Hawaii, 1 in MPEC 2020-W187 -- 2012 XE133
`V93`	Pin Oak Obs., 9 in MPEC 2020-W186 -- 2020 TG4, 2013 UX14, 2002 TS67, 2002 GZ8, 65717, 428086, 163902, 154302, 144411
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2020-W185 -- 2008 YJ2
`C95`	SATINO-1 in France, 1 in MPEC 2020-W186 -- 4486
`Q21`	Southern Utsunomiya in Japan, 1 in MPEC 2020-W186 -- 162173
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 37 in MPECs 2020-W185, 2020-W186 & 2020-W187 -- 2020 WY3, 2020 WX3, 2020 WW3, 2020 WV4, 2020 WU2, 2020 WT2, 2020 WQ, 2020 WP4, 2020 WK, 2020 WH2, 2020 WG, 2020 WF2, 2020 WE4, 2020 WE2, 2020 WC5, 2020 WB3, 2020 VZ5, 2020 VX5, 2020 VX1, 2020 VN3, 2020 VM3, 2020 VM1, 2020 UE4, 2020 TT7, 2020 TM4, 2020 TJ8, 2020 RQ11, 2020 RO6, 2020 QU6, 2020 QQ6, 2020 QM4, 2020 PK7, 2020 PD1, 2020 OQ2, 2020 HD6, 2012 XE133, 2008 YJ2
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-W186 -- 2010 FD7
`G33`	Wickede Obs. in Germany, 1 in MPEC 2020-W186 -- 2013 UX14
`I41`	Zwicky Transient Facility (ZTF) in southern California, 18 in MPEC 2020-W186 -- 2020 TG4, 2014 JH57, 2012 SA22, 2003 YP17, 1999 VX15, 88188, 85804, 452307, 413192, 352143, 31669, 155340, 152931, 137032, 7822, 7350, 5143, 1036

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

Impact Risk Monitoring on 29 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 WB3	NEODyS	1900	2097	1	6.64e-11	-8.03	-8.03	0	NEODyS: "Based on 68 optical observations (of which 2 are rejected as outliers) from 2020-11-21.062 to 2020-11-29.083."

2019 XR	JPL Sentry	1900	2053-2053	1	4.466e-09	-9.76	-9.76	0	JPL: Computed at 19:57 Dec. 3rd of 2019 Pacific time based on 13 observations spanning 1.1201 days (2019-Dec-02.38857 to 2019-Dec-03.50863). Diameter approximately 0.008 km. from weighted mean H=28.07.

2018 WA3	JPL Sentry	1900	2055-2060	2	6.4413e-07	-7.27	-7.28	0	JPL: Computed at 07:43 Dec. 21st of 2018 Pacific time based on 31 observations spanning 10.269 days (2018-Nov-29.26148 to 2018-Dec-09.530805). Diameter approximately 0.009 km. from weighted mean H=27.85.

2007 XZ9	JPL Sentry	1900	2068-2089	2	1.082e-06	-5.84	-5.88	0	JPL: Computed at 11:59 April 12th of 2017 Pacific time based on 41 observations spanning 13.990 days (2007-Dec-04.19408 to 2007-Dec-18.18365). Diameter approximately 0.037 km. from weighted mean H=24.82.

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 29 November '20

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

2306	Grabbed MPEC 2020-W187 - 2012 XE133 - see above
1900	Noted that JPL Sentry has updated its 2007 XZ9 risk assessment - see above Noted that JPL Sentry has updated its 2018 WA3 risk assessment - see above Noted that JPL Sentry has updated its 2019 XR risk assessment - see above Noted that NEODyS has updated its 2020 WB3 risk assessment - see above
1800	Grabbed MPEC 2020-W185 - 2008 YJ2 - see above Grabbed MPEC 2020-W186 - Daily Orbit Update - see above

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