Contents  on 4 September '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 4 September '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, eleven were "one nighters." So far The Tracking News has counted a total of 25 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 4 September '20

Minor Planet Electronic Circulars

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


MPEC 2020-R09 - "23:37 UT" - 2020 OC8


MPEC 2020-R08 - "20:11 UT" - 2020 RB


MPEC 2020-R07 - "20:05 UT" - 2020 RA


<< DOU on 4 September '20 >>  MPEC 2020-R06 - "12:06 UT" - Daily Orbit Update

Observers  on 4 September '20

A total of 35 observers appear in today's MPECs.

CodeObserver / observatory
T05ATLAS Haleakala in Hawaii, 14 in MPECs 2020-R06, 2020-R07 & 2020-R09 -- 2020 RA, 2020 OC8, 2016 NV38, 96744, 66146, 66008, 420302, 23187, 162173, 136900, 4947, 3200, 2368, 1036
T08ATLAS Mauna Loa in Hawaii, 14 in MPECs 2020-R06, 2020-R07 & 2020-R08 -- 2020 RB, 2020 RA, 2020 QV6, 2013 UX14, 2010 JV153, 2006 UD63, 54789, 500094, 20826, 190166, 137799, 11405, 5645, 4953
160Castelmartini Obs. in Italy, 2 in MPECs 2020-R06 & 2020-R08 -- 2020 RB, 5863
703Catalina Sky Survey in Arizona, 1 in MPEC 2020-R06 -- 2017 YS8
Z99Clixby Obs. in England, 3 in MPECs 2020-R06, 2020-R07 & 2020-R09 -- 2020 RA, 2020 OC8, 2020 MP
958Dax Obs. in France, 2 in MPECs 2020-R07 & 2020-R08 -- 2020 RB, 2020 RA
734Farpoint Obs. in Kansas, 1 in MPEC 2020-R06 -- 2020 NM1
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2020-R07, 2020-R08 & 2020-R09 -- 2020 RB, 2020 RA, 2020 OC8
K83Forti Obs., 3 in MPECs 2020-R07, 2020-R08 & 2020-R09 -- 2020 RB, 2020 RA, 2020 OC8
W46Foxfire Village Obs., 1 in MPEC 2020-R06 -- 66008
203GiaGa Obs. in Italy, 4 in MPECs 2020-R06, 2020-R07 & 2020-R08 -- 2020 RB, 2020 RA, 2020 QM1, 2020 PT4
U55Golden Ears Obs., 1 in MPEC 2020-R07 -- 2020 RA
J95Great Shefford Obs. in England, 1 in MPEC 2020-R07 -- 2020 RA
A17Guidestar Obs. in Germany, 1 in MPEC 2020-R09 -- 2020 OC8
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-R06 -- 420302
K38M57 Obs. in Italy, 2 in MPECs 2020-R07 & 2020-R08 -- 2020 RB, 2020 RA
W92MASTER OAFA Obs., 1 in MPEC 2020-R06 -- 5645
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2020-R06 & 2020-R09 -- 2020 OC8, 2017 YS8
0895N.V. Maigurova via Nikolaev Obs. in Ukraine, 6 in MPEC 2020-R06 -- 2020 QV6, 2019 AN5, 2006 HB, 19764, 4055, 887
Z80Northolt Branch Obs. in England, 4 in MPEC 2020-R06 -- 2016 NV38, 465824, 382625, 136900
F51Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2020-R06 & 2020-R09 -- 2020 QL2, 2020 OC8, 2020 OA4, 2011 BH40, 2009 FY29, 2000 PQ27, 53430, 392211, 159929
F52Pan-STARRS 2 (PS2) in Hawaii, 4 in MPECs 2020-R06, 2020-R07 & 2020-R09 -- 2020 RA, 2020 OC8, 2020 ML3, 53430
B49Paus Obs. in Spain, 3 in MPECs 2020-R06, 2020-R07 & 2020-R09 -- 2020 RA, 2020 PT4, 2020 OC8
V93Pin Oak Obs., 5 in MPEC 2020-R06 -- 2005 QS10, 500094, 420302, 159402, 136900
654Pomona College Table Mtn. Obs. in southern California, 1 in MPEC 2020-R07 -- 2020 RA
D29Purple Mtn. Obs. Xuyi Station in China, 8 in MPECs 2020-R06 & 2020-R09 -- 2020 OG4, 2020 OC8, 96744, 465824, 428086, 163081, 115052, 105140
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2020-R08 -- 2020 RB
H36Sandlot Obs. in Kansas, 2 in MPECs 2020-R07 & 2020-R08 -- 2020 RB, 2020 RA
C95SATINO-1 in France, 1 in MPEC 2020-R06 -- 2020 MX
204Schiaparelli Obs. in Italy, 2 in MPECs 2020-R07 & 2020-R08 -- 2020 RB, 2020 RA
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2020-R07 & 2020-R08 -- 2020 RB, 2020 RA
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2020-R07 & 2020-R08 -- 2020 RB, 2020 RA
I52Steward Obs. Mt. Lemmon Station in Arizona, 22 in MPECs 2020-R06, 2020-R07 & 2020-R08 -- 2020 RB, 2020 RA, 2020 QY1, 2020 QX, 2020 QW2, 2020 QV6, 2020 QO5, 2020 QM4, 2020 QK6, 2020 QG3, 2020 QC6, 2020 PY1, 2020 PX3, 2020 PG, 2020 PF7, 2020 PC3, 2020 OS7, 2020 OM1, 2020 OC7, 2020 MO4, 2020 HX5, 2017 SN14
A16Tentlingen Obs. in Switzerland, 3 in MPEC 2020-R06 -- 66008, 382625, 136900
I41Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-R06 -- 24761, 1685, 433
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 September '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 RBJPL Sentry22322106-210615.216e-10-6.18-6.180JPL: Computed at 14:26 today Pacific time based on 50 observations spanning 1.5874 days (2020-Sep-03.239448 to 2020-Sep-04.82682). Diameter approximately 0.490 km. from weighted mean H=19.20.
2017 YD2NEODyS1700R E M O V E D-
2017 RZ15JPL Sentry17012071-2117295.0389714e-05-5.64-5.990JPL: Computed at 08:23 Sept. 20th of 2017 Pacific time based on 9 observations spanning 2.8111 days (2017-Sep-15.41445 to 2017-Sep-18.2255). Diameter approximately 0.013 km. from weighted mean H=27.15.
2016 PA79JPL Sentry17012037-2102101.06271e-08-7.56-8.160JPL: Computed at 21:05 April 9th of 2017 Pacific time based on 6 observations spanning .80446 days (2016-Aug-08.56217 to 2016-Aug-09.366628). Diameter approximately 0.047 km. from weighted mean H=24.31.
2016 DA31JPL Sentry17012031-21171890.0002853729145-5.44-5.740JPL: Computed at 12:36 April 8th of 2017 Pacific time based on 14 observations spanning .85160 days (2016-Feb-28.4092 to 2016-Feb-29.2608). Diameter approximately 0.004 km. from weighted mean H=29.90.
2011 BH40JPL Sentry1701R E M O V E DJPL: Risk listing removed at 1634 UTC today
NEODyS1700R E M O V E D-
2008 EM68JPL Sentry17012020-211610891.05924711e-05-5.31-5.650JPL: Computed at 00:27 April 7th of 2017 Pacific time based on 12 observations spanning .11019 days (2008-Mar-08.25164 to 2008-Mar-08.36183). Diameter approximately 0.010 km. from weighted mean H=27.72.

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 4 September '20

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

2358Grabbed MPEC 2020-R09 - 2020 OC8 - see above
2232Noted that JPL Sentry has posted 2020 RB as an impact risk - see above
Grabbed MPEC 2020-R07 - 2020 RA - see above
Grabbed MPEC 2020-R08 - 2020 RB - see above
1701Noted that JPL Sentry has updated its 2008 EM68 risk assessment - see above
Noted that JPL Sentry has removed 2011 BH40 as an impact risk - see above
Noted that JPL Sentry has updated its 2016 DA31 risk assessment - see above
Noted that JPL Sentry has updated its 2016 PA79 risk assessment - see above
Noted that JPL Sentry has updated its 2017 RZ15 risk assessment - see above
1700Noted that NEODyS has removed 2011 BH40 as an impact risk - see above
Noted that NEODyS has removed 2017 YD2 as an impact risk - see above
Grabbed MPEC 2020-R06 - Daily Orbit Update - see above