Contents  on 29 November '20

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed 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-W187 - "21:30 UT" - 2012 XE133


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


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

Observers  on 29 November '20

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

CodeObserver / observatory
T05ATLAS Haleakala in Hawaii, 9 in MPEC 2020-W186 -- 87684, 85275, 186822, 185716, 12538, 4953, 4179, 4055, 887
T08ATLAS 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
Q68Blue Mountains Obs. in New South Wales, 4 in MPEC 2020-W186 -- 85275, 65717, 185716, 4055
160Castelmartini Obs. in Italy, 3 in MPEC 2020-W186 -- 2020 UZ3, 474554, 418797
703Catalina 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
E89Geyserland Obs. in New Zealand, 2 in MPEC 2020-W186 -- 186822, 138095
K88GINOP-KHK in Hungary, 2 in MPEC 2020-W186 -- 2020 WP4, 2020 WJ3
240Herrenberg Obs. in Germany, 1 in MPEC 2020-W186 -- 2017 SE19
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-W186 -- 159402
G96Mt. 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
K74Muensterschwarzach Obs. in Germany, 3 in MPEC 2020-W186 -- 2017 WJ16, 2017 VT12, 2013 UX14
Z80Northolt Branch Obs. in England, 1 in MPEC 2020-W186 -- 2020 SO
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPEC 2020-W186 -- 2020 RU, 21374, 141052
F52Pan-STARRS 2 in Hawaii, 1 in MPEC 2020-W187 -- 2012 XE133
V93Pin Oak Obs., 9 in MPEC 2020-W186 -- 2020 TG4, 2013 UX14, 2002 TS67, 2002 GZ8, 65717, 428086, 163902, 154302, 144411
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-W185 -- 2008 YJ2
C95SATINO-1 in France, 1 in MPEC 2020-W186 -- 4486
Q21Southern Utsunomiya in Japan, 1 in MPEC 2020-W186 -- 162173
I52Steward 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
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-W186 -- 2010 FD7
G33Wickede Obs. in Germany, 1 in MPEC 2020-W186 -- 2013 UX14
I41Zwicky 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 WB3NEODyS1900209716.64e-11-8.03-8.030NEODyS: "Based on 68 optical observations (of which 2 are rejected as outliers) from 2020-11-21.062 to 2020-11-29.083."
2019 XRJPL Sentry19002053-205314.466e-09-9.76-9.760JPL: 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 WA3JPL Sentry19002055-206026.4413e-07-7.27-7.280JPL: 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 XZ9JPL Sentry19002068-208921.082e-06-5.84-5.880JPL: 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.

2306Grabbed MPEC 2020-W187 - 2012 XE133 - see above
1900Noted 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
1800Grabbed MPEC 2020-W185 - 2008 YJ2 - see above
Grabbed MPEC 2020-W186 - Daily Orbit Update - see above