Contents  on 1 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 1 September '20

The MPC's NEO Confirmation Page has 26 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 26 objects listed. Of these, eighteen were "one nighters." So far The Tracking News has counted a total of 32 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 1 September '20

Minor Planet Electronic Circulars

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

<< DOU on 1 September '20 >>  MPEC 2020-R02 - "12:05 UT" - Daily Orbit Update

MPEC 2020-R01 - "00:08 UT" - 2020 QX6

Observers  on 1 September '20

A total of 20 observers appear in today's MPECs.

CodeObserver / observatory
T05ATLAS Haleakala in Hawaii, 4 in MPEC 2020-R02 -- 90147, 428086, 144411, 105140
T08ATLAS Mauna Loa in Hawaii, 17 in MPEC 2020-R02 -- 2016 ED85, 2007 VX137, 96744, 90075, 88264, 87684, 68350, 53435, 357058, 19764, 159856, 145656, 11405, 7088, 4055, 3753, 887
160Castelmartini Obs. in Italy, 15 in MPEC 2020-R02 -- 2020 PS, 2016 NV38, 2014 QL433, 2014 NE64, 2007 VX137, 87311, 85804, 66008, 420302, 411165, 382625, 354952, 308043, 136900, 106538
W84!program code "!" (10) via DECam in Chile, 3 in MPEC 2020-R02 -- 523781, 23606, 153842
J95Great Shefford Obs. in England, 4 in MPEC 2020-R02 -- 2020 QV6, 2020 QO4, 2020 QG5, 2020 QA6
C401program code 1 via Kuban State Univ. Obs. in Russia, 2 in MPEC 2020-R02 -- 420302, 19764
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2020-R01 -- 2020 QX6
Z80Northolt Branch Obs. in England, 1 in MPEC 2020-R02 -- 465824
F51Pan-STARRS 1 (PS1) in Hawaii, 5 in MPEC 2020-R02 -- 523707, 466130, 361123, 354952, 162173
F52Pan-STARRS 2 (PS2) in Hawaii, 5 in MPEC 2020-R02 -- 86667, 53430, 488640, 189630, 162980
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 3 in MPEC 2020-R02 -- 2020 QS5, 2020 QH4, 2020 QE3
L18QOS Obs., 2 in MPEC 2020-R02 -- 465824, 285990
247roving observer, 1 in MPEC 2020-R02 -- 85275
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2020-R02 -- 217430
C95SATINO-1 in France, 1 in MPEC 2020-R02 -- 2017 HN3
Y00SONEAR in Brazil, 1 in MPEC 2020-R02 -- 85275
I52Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2020-R01 -- 2020 QX6
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-R02 -- 2002 UQ12
C51WISE in Earth polar orbit, 1 in MPEC 2020-R02 -- 144411
I41Zwicky Transient Facility in southern California, 1 in MPEC 2020-R02 -- 2010 RA91
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 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.





Notes for Today's Latest Risk Assessments
2020 PG6JPL Sentry19352029-2048100.00038174857-3.79-3.790JPL: Computed at 07:34 Aug. 23rd Pacific time based on 25 observations spanning 10.555 days (2020-Aug-11.36766 to 2020-Aug-21.923096). Diameter approximately 0.013 km. from weighted mean H=27.02.
2019 QR3JPL Sentry19352073-2088190.000243857487-4.73-5.080JPL: Computed at 07:04 Aug. 30th of 2019 Pacific time based on 19 observations spanning 2.2452 days (2019-Aug-27.27806 to 2019-Aug-29.523213). Diameter approximately 0.013 km. from weighted mean H=27.13.
2019 EFJPL Sentry19352117-211712.641e-08-8.47-8.470JPL: Computed at 07:36 March 22nd of 2019 Pacific time based on 60 observations spanning 11.123 days (2019-Mar-01.37381 to 2019-Mar-12.497194). Diameter approximately 0.016 km. from weighted mean H=26.63.
2018 RF5JPL Sentry19352103-211538.392e-06-6.54-6.640JPL: Computed at 06:29 Sept. 16th of 2019 Pacific time based on 55 observations spanning 9.2061 days (2018-Sep-10.09301 to 2018-Sep-19.299119). Diameter approximately 0.011 km. from weighted mean H=27.36.
2014 HE197JPL Sentry18002028-2098226.1371e-09-8.12-9.100JPL: Computed at 01:44 April 10th of 2017 Pacific time based on 16 observations spanning 2.0503 days (2014-Apr-23.29183 to 2014-Apr-25.34216). Diameter approximately 0.027 km. from weighted mean H=25.52.
2010 RA91NEODyS1700211517.25e-09-7.78-7.780NEODyS: "Based on 105 optical observations (of which 1 are rejected as outliers) from 2010-09-03.486 to 2010-10-04.087."
2009 EH1JPL Sentry18002051-205111.547e-09-10.01-10.010JPL: Computed at 18:06 April 11th of 2017 Pacific time based on 21 observations spanning 2.6511 days (2009-Mar-03.25773 to 2009-Mar-05.90881). Diameter approximately 0.009 km. from weighted mean H=27.86.

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 1 September '20

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

1935Noted that JPL Sentry has updated its 2018 RF5 risk assessment - see above
Noted that JPL Sentry has updated its 2019 EF risk assessment - see above
Noted that JPL Sentry has updated its 2019 QR3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 PG6 risk assessment - see above
1800Noted that JPL Sentry has updated its 2009 EH1 risk assessment - see above
Noted that JPL Sentry has updated its 2014 HE197 risk assessment - see above
1700Noted that NEODyS has updated its 2010 RA91 risk assessment - see above
Grabbed MPEC 2020-R02 - Daily Orbit Update - see above
0100Grabbed MPEC 2020-R01 - 2020 QX6 - see above