Contents  on 5 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 5 June '20

The MPC's NEO Confirmation Page has 31 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 31 objects listed. Of these, 22 were "one nighters." So far The Tracking News has counted a total of 36 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 5 June '20

Minor Planet Electronic Circulars

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


MPEC 2020-L29 - "17:05 UT" - 2013 RT128


MPEC 2020-L28 - "15:49 UT" - 2014 SK378


MPEC 2020-L27 - "15:24 UT" - 2015 AD298


<< DOU on 5 June '20 >>  MPEC 2020-L26 - "12:01 UT" - Daily Orbit Update


MPEC 2020-L25 - "11:03 UT" - 2020 KR7


MPEC 2020-L24 - "10:50 UT" - 2020 LB

Observers  on 5 June '20

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2020-L24 & 2020-L25 -- 2020 LB, 2020 KR7
T05ATLAS Haleakala in Hawaii, 5 in MPEC 2020-L26 -- 85184, 184990, 159929, 154278, 106589
T08ATLAS Mauna Loa in Hawaii, 16 in MPEC 2020-L26 -- 2020 KD2, 2020 JU, 2013 XA22, 2006 UD63, 2006 HB, 66407, 53435, 513170, 495615, 349063, 19764, 190166, 145656, 6569, 2102, 1685
L65Bredenkamp Obs., 1 in MPEC 2020-L26 -- 52768
703Catalina Sky Survey (CSS) in Arizona, 15 in MPECs 2020-L24 & 2020-L26 -- 2020 LB, 86667, 68350, 495615, 35107, 331471, 159929, 159608, 145656, 138847, 137199, 137170, 115052, 4055, 1627
V94Cherokee Ridge Obs., 1 in MPEC 2020-L26 -- 86667
1211Yu. N. Krugly via Chuguevskaya Station in Ukraine, 1 in MPEC 2020-L26 -- 2002 NY40
958Dax Obs. in France, 1 in MPEC 2020-L24 -- 2020 LB
W847David Gerdes in Michigan via DECam in Chile, 3 in MPECs 2020-L27, 2020-L28 & 2020-L29 -- 2015 AD298, 2014 SK378, 2013 RT128
W46Foxfire Village Obs., 1 in MPEC 2020-L26 -- 415711
U55Golden Ears Obs., 3 in MPEC 2020-L26 -- 2010 EC135, 331471, 136874
J95Great Shefford Obs. in England, 1 in MPEC 2020-L24 -- 2020 LB
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-L26 -- 99935
118Modra Obs. in Slovakia, 1 in MPEC 2020-L26 -- 2002 QZ6
474Mt. John Obs. in New Zealand, 1 in MPEC 2020-L25 -- 2020 KR7
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPEC 2020-L26 -- 2020 HH6, 2020 FW3, 2018 LM4, 86667, 86067, 68350, 510073, 444193, 436030, 137199, 115052
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2020-L24, 2020-L25 & 2020-L26 -- 2020 LB, 2020 KR7, 2020 GY2, 1866
K80Platanus Obs., 1 in MPEC 2020-L24 -- 2020 LB
C95SATINO-1 in France, 1 in MPEC 2020-L26 -- 6455
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-L24 -- 2020 LB
I52Steward Obs. Mt. Lemmon Station in Arizona, 11 in MPECs 2020-L24 & 2020-L26 -- 2020 LB, 2020 KQ1, 2020 KC7, 2020 KB3, 2020 JX1, 2020 JU3, 2020 JU1, 2020 HO10, 2020 HH6, 2020 GN3, 2020 FW3
858Tebbutt Obs. in New Mexico, 1 in MPEC 2020-L24 -- 2020 LB
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-L26 -- 2016 GD1, 2016 AA10
L01Visnjan Obs. in Croatia, 1 in MPEC 2020-L24 -- 2020 LB
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 5 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.
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 KB3JPL Sentry16002052-205211.509e-06-5.48-5.480JPL: Computed at 06:28 today Pacific time based on 36 observations spanning 15.816 days (2020-May-20.375682 to 2020-Jun-05.19137). Diameter approximately 0.045 km. from weighted mean H=24.40.
NEODyS16002052-210222.07e-07-6.35-6.350NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2020-05-20.376 to 2020-06-05.192."
2020 JU3JPL Sentry1600R E M O V E DJPL: Risk listing removed at 1328 UTC today
2020 GY2JPL Sentry16002093-209313.983e-08-6.79-6.790JPL: Computed at 06:28 today Pacific time based on 96 observations spanning 16.090 days (2020-Apr-15.34915 to 2020-May-01.43888). Diameter approximately 0.064 km. from weighted mean H=23.63.
NEODyS1600209312.43e-09-8.02-8.020NEODyS: "Based on 96 optical observations (of which 1 are rejected as outliers) from 2020-04-15.350 to 2020-05-01.440."
2007 VH189JPL Sentry16002037-204552.819e-08-6.20-6.630JPL: 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.
2006 WV29JPL Sentry16002036-2108125.6522536e-06-5.89-6.270JPL: Computed at 06:29 April 12th of 2017 Pacific time based on 28 observations spanning 2.5814 days (2006-Nov-23.27183 to 2006-Nov-25.853199). Diameter approximately 0.017 km. from weighted mean H=26.52.

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 5 June '20

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

1804Grabbed MPEC 2020-L29 - 2013 RT128 - see above
1600Noted that JPL Sentry has updated its 2006 WV29 risk assessment - see above
Noted that JPL Sentry has updated its 2007 VH189 risk assessment - see above
Noted that JPL Sentry has updated its 2020 GY2 risk assessment - see above
Noted that NEODyS has updated its 2020 GY2 risk assessment - see above
Noted that JPL Sentry has removed 2020 JU3 as an impact risk - 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-L24 - 2020 LB - see above
Grabbed MPEC 2020-L25 - 2020 KR7 - see above
Grabbed MPEC 2020-L26 - Daily Orbit Update - see above
Grabbed MPEC 2020-L27 - 2015 AD298 - see above
Grabbed MPEC 2020-L28 - 2014 SK378 - see above