Contents  on 30 October '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 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-U269 - "23:31 UT" - Comet P/2007 R2 = 2020 R8 (Gibbs)


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


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


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


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


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

Observers  on 30 October '20

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

CodeObserver / observatory
U71AHS Obs., 2 in MPEC 2020-U266 -- 21088, 8037
M43Al Sadeem Obs. in Abu Dhabi, 2 in MPEC 2020-U266 -- 2013 UX14, 163902
T08ATLAS Mauna Loa in Hawaii, 6 in MPEC 2020-U266 -- 30825, 11405, 7977, 4179, 3908, 3691
703Catalina 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
G375program code 5 via Discovery Channel Telescope in Arizona, 1 in MPEC 2020-U267 -- 2020 BT12
N31Eden Obs., 2 in MPEC 2020-U266 -- 2009 UM, 2005 JT108
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-U266 -- 2020 ST1
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-U269 -- P/2020 R8
Q57Korea Microlensing Telescope Network SSO in New South Wales, 1 in MPEC 2020-U269 -- P/2020 R8
474Mt. John Obs. in New Zealand, 1 in MPEC 2020-U265 -- 2020 US6
G96Mt. 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
K74Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-U266 -- 2004 US1
Z80Northolt Branch Obs. in England, 2 in MPEC 2020-U266 -- 2020 TR5, 2002 GZ8
F51Pan-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
F52Pan-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
H36Sandlot Obs. in Kansas, 2 in MPEC 2020-U266 -- 2020 UN3, 2020 UB5
C95SATINO-1 in France, 1 in MPEC 2020-U266 -- 2014 UR116
Q11Shinshiro Obs., 1 in MPEC 2020-U269 -- P/2020 R8
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2020-U266 -- 2020 TF, 2020 ST1, 2004 UR1
291Spacewatch 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
I52Steward 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
W33Transit Dreams Obs., 3 in MPEC 2020-U266 -- 2020 UA3, 2020 ST1, 2013 UX14
I41Zwicky 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 UO6JPL Sentry1700R E M O V E DJPL: Risk listing removed at 1459 UTC today
NEODyS1700R E M O V E D-
2020 UL3JPL Sentry17002111-211862.47654e-06-5.07-5.440JPL: 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.
NEODyS17002111-2120173.86e-06-4.88-5.31n/aNEODyS: "Based on 45 optical observations (of which 1 are rejected as outliers) from 2020-10-17.537 to 2020-10-30.276."
2020 TJ3JPL Sentry17002067-2120337.3726208e-05-4.11-4.720JPL: 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.
NEODyS17002067-2120597.42e-05-4.13-4.56n/aNEODyS: "Based on 57 optical observations (of which 1 are rejected as outliers) from 2020-10-11.172 to 2020-10-30.158."
2020 TY1JPL Sentry17002098-211331.86331e-07-5.84-5.880JPL: 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 HR197JPL Sentry17002021-21121887.33353e-08-7.08-7.990JPL: 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 VR139JPL Sentry17002024-2076132.06067e-08-8.36-8.990JPL: 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 VLJPL Sentry17002021-21166321.1563129e-05-6.27-7.320JPL: 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.

2334Grabbed MPEC 2020-U269 - Comet P/2007 R2 = 2020 R8 (Gibbs) - see above
2130Grabbed MPEC 2020-U268 - 2020 UT6 - see above
1801Grabbed MPEC 2020-U267 - 2020 BT12 - see above
1700Noted 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