Contents  on 3 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 3 June '20

The MPC's NEO Confirmation Page has 37 listings

When last checked at 2300 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 37 objects listed. Of these, 26 were "one nighters." So far The Tracking News has counted a total of 42 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 3 June '20

Minor Planet Electronic Circulars

As of last check at 2300 UTC, there have been eight MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-L17 - "22:16 UT" - 2016 TO120

MPEC 2020-L16 - "22:06 UT" - 2016 TN120

MPEC 2020-L15 - "21:43 UT" - 2016 GZ276

MPEC 2020-L14 - "20:58 UT" - 2017 FE173

MPEC 2020-L13 - "15:00 UT" - 2017 VX1

MPEC 2020-L12 - "14:16 UT" - 2020 LA

<< DOU on 3 June '20 >>  MPEC 2020-L11 - "12:00 UT" - Daily Orbit Update

MPEC 2020-L10 - "11:27 UT" - 2019 VS7

Observers  on 3 June '20

Thirteen observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2020-L12 -- 2020 LA
807.Scott Sheppard via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2020-L14, 2020-L16 & 2020-L17 -- 2017 FE173, 2016 TO120, 2016 TN120
G37Discovery Channel Telescope in Arizona, 1 in MPEC 2020-L14 -- 2017 FE173
J95Great Shefford Obs. in England, 1 in MPEC 2020-L12 -- 2020 LA
304.program code "." (23) via Las Campanas Obs. in Chile, 3 in MPECs 2020-L14, 2020-L16 & 2020-L17 -- 2017 FE173, 2016 TO120, 2016 TN120
3045program code 5 via Las Campanas Obs. in Chile, 1 in MPEC 2020-L15 -- 2016 GZ276
5685Scott Sheppard on Mauna Kea in Hawaii, 1 in MPEC 2020-L15 -- 2016 GZ276
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2020-L10 & 2020-L12 -- 2020 LA, 2019 VS7
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2020-L10 -- 2019 VS7
C95SATINO-1 in France, 1 in MPEC 2020-L11 -- 6050
I52Steward Obs. Mt. Lemmon Station in Arizona, 20 in MPECs 2020-L10 & 2020-L11 -- 2020 KZ5, 2020 KZ4, 2020 KZ3, 2020 KS6, 2020 KR5, 2020 KR1, 2020 KO3, 2020 KO1, 2020 KN4, 2020 KN3, 2020 KN2, 2020 KG4, 2020 KD4, 2020 KB7, 2020 KA7, 2020 JX, 2020 JU1, 2020 JU, 2020 HV1, 2019 VS7
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-L13 -- 2017 VX1
L01Visnjan Obs. in Croatia, 1 in MPEC 2020-L12 -- 2020 LA
N88Xingming Obs. #3, 1 in MPEC 2020-L10 -- 2019 VS7
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 June '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2300 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 KN3NEODyS1610R E M O V E D-
2020 KN2JPL Sentry16102063-2117113.217026e-05-5.22-5.230JPL: Computed at 06:31 today Pacific time based on 72 observations spanning 13.971 days (2020-May-20.412007 to 2020-Jun-03.38263). Diameter approximately 0.018 km. from weighted mean H=26.36.
NEODyS16102063-2116193.13e-05-5.24-5.250NEODyS: "Based on 74 optical observations (of which 2 are rejected as outliers) from 2020-05-20.413 to 2020-06-03.383."
2014 LY21JPL Sentry16102020-21169718.37667120999998e-05-4.92-5.120JPL: Computed at 18:09 April 8th of 2017 Pacific time based on 11 observations spanning .04506 days (2014-Jun-02.41612 to 2014-Jun-02.46118). Diameter approximately 0.005 km. from weighted mean H=29.25.
2008 KOJPL Sentry16102049-206137.7813e-07-5.29-5.610JPL: Computed at 11:32 April 10th of 2017 Pacific time based on 44 observations spanning 3.8882 days (2008-May-27.3758 to 2008-May-31.26395). Diameter approximately 0.045 km. from weighted mean H=24.40.

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 3 June '20

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

2300Grabbed MPEC 2020-L16 - 2016 TN120 - see above
Grabbed MPEC 2020-L17 - 2016 TO120 - see above
2201Grabbed MPEC 2020-L14 - 2017 FE173 - see above
Grabbed MPEC 2020-L15 - 2016 GZ276 - see above
1610Noted that JPL Sentry has updated its 2008 KO risk assessment - see above
Noted that JPL Sentry has updated its 2014 LY21 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KN2 risk assessment - see above
Noted that NEODyS has updated its 2020 KN2 risk assessment - see above
Noted that NEODyS has removed 2020 KN3 as an impact risk - see above
Grabbed MPEC 2020-L10 - 2019 VS7 - see above
Grabbed MPEC 2020-L11 - Daily Orbit Update - see above
Grabbed MPEC 2020-L12 - 2020 LA - see above
Grabbed MPEC 2020-L13 - 2017 VX1 - see above