Contents  on 6 June '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 6 June '20

The MPC's NEO Confirmation Page has 29 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 29 objects listed. Of these, 20 were "one nighters." So far The Tracking News has counted a total of 31 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 6 June '20

Minor Planet Electronic Circulars

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

<< DOU on 6 June '20 >>  MPEC 2020-L30 - "12:01 UT" - Daily Orbit Update

Observers  on 6 June '20

Eighteen observers appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPEC 2020-L30 -- 2020 KZ4, 2020 KN4, 2020 KD2, 2020 KB7, 2010 EC135, 85184, 477885, 331471, 184990, 137199
T05ATLAS Haleakala in Hawaii, 14 in MPEC 2020-L30 -- 2013 XA22, 2005 MR5, 99935, 66251, 420302, 349063, 19764, 190166, 175189, 4954, 4179, 3691, 2102, 1685
T08ATLAS Mauna Loa in Hawaii, 12 in MPEC 2020-L30 -- 2010 EC135, 86667, 85275, 85184, 68350, 331471, 159608, 138847, 137199, 136874, 6569, 4055
160Castelmartini Obs. in Italy, 3 in MPEC 2020-L30 -- 2013 XA22, 86667, 35107
K83Forti Obs., 1 in MPEC 2020-L30 -- 2010 EC135
203GiaGa Obs. in Italy, 4 in MPEC 2020-L30 -- 2020 KB3, 2015 FP332, 2013 XA22, 2010 EC135
J95Great Shefford Obs. in England, 3 in MPEC 2020-L30 -- 2020 LA, 2020 KO1, 2020 KA7
046Klet Obs. in the Czech Republic, 2 in MPEC 2020-L30 -- 159533, 153243
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-L30 -- 137199
844Los Molinos Obs. in Uruguay, 1 in MPEC 2020-L30 -- 20790
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2020-L30 -- 99935
118Modra Obs. in Slovakia, 1 in MPEC 2020-L30 -- 2001 HK31
557Ondrejov Obs. in the Czech Republic, 1 in MPEC 2020-L30 -- 25916
F52Pan-STARRS 2 (PS2) in Hawaii, 4 in MPEC 2020-L30 -- 85804, 15817, 145656, 106589
V93Pin Oak Obs., 7 in MPEC 2020-L30 -- 2013 XA22, 495615, 184990, 175189, 137199, 136874, 8014
H36Sandlot Obs. in Kansas, 3 in MPEC 2020-L30 -- 2020 HH6, 2016 FY14, 2006 SS19
C95SATINO-1 in France, 1 in MPEC 2020-L30 -- 6569
W881Tony Evans in Portugal via Chile Obs. in Chile, 1 in MPEC 2020-L30 -- 2013 XA22
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 June '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 KB3JPL Sentry16402052-205213.251e-07-6.15-6.150JPL: Computed at 06:28 today Pacific time based on 39 observations spanning 16.564 days (2020-May-20.375682 to 2020-Jun-05.939795). Diameter approximately 0.044 km. from weighted mean H=24.41.
NEODyS1640205212.13e-09-8.34-8.340NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2020-05-20.376 to 2020-06-05.941."
2019 LU1JPL Sentry16402056-207084.65486e-06-4.29-4.350JPL: Computed at 00:38 June 12th of 2019 Pacific time based on 26 observations spanning 6.8508 days (2019-Jun-01.417911 to 2019-Jun-08.268733). Diameter approximately 0.050 km. from weighted mean H=24.17.
2016 LG10JPL Sentry16402108-210843.2218e-06-6.08-6.440JPL: Computed at 13:32 April 8th of 2017 Pacific time based on 48 observations spanning 26.087 days (2016-Jun-07.3861 to 2016-Jul-03.473141). Diameter approximately 0.027 km. from weighted mean H=25.51.
2007 VH189JPL Sentry16402037-204552.819e-08-6.19-6.630JPL: Computed at 03:24 April 7th of 2017 Pacific time based on 23 observations spanning 5.8502 days (2007-Nov-14.35096 to 2007-Nov-20.20114). Diameter approximately 0.073 km. from weighted mean H=23.35.

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 6 June '20

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

1640Noted that JPL Sentry has updated its 2007 VH189 risk assessment - see above
Noted that JPL Sentry has updated its 2016 LG10 risk assessment - see above
Noted that JPL Sentry has updated its 2019 LU1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KB3 risk assessment - see above
Noted that NEODyS has updated its 2020 KB3 risk assessment - see above
Grabbed MPEC 2020-L30 - Daily Orbit Update - see above