Contents  on 1 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 1 June '20

The MPC's NEO Confirmation Page has 44 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 44 objects listed. Of these, 30 were "one nighters." So far The Tracking News has counted a total of 56 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 June '20

Minor Planet Electronic Circulars

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


MPEC 2020-L05 - "19:17 UT" - 2020 KQ7


MPEC 2020-L04 - "19:15 UT" - 2020 KP7


MPEC 2020-L03 - "17:50 UT" - Comet C/2020 K6 (Rankin)


<< DOU on 1 June '20 >>  MPEC 2020-L02 - "12:02 UT" - Daily Orbit Update


MPEC 2020-L01 - "01:16 UT" - 2020 KK7

Observers  on 1 June '20

A total of 34 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2020-L02 & 2020-L04 -- 2020 KP7, 2020 KG, 2020 KB2, 2020 KA7, 2020 HY10, 2009 WM139
T05ATLAS Haleakala in Hawaii, 3 in MPEC 2020-L02 -- 2015 FP332, 184990, 106589
T08ATLAS Mauna Loa in Hawaii, 41 in MPECs 2020-L01 & 2020-L02 -- 2020 KR5, 2020 KQ5, 2020 KN4, 2020 KK7, 2020 KB7, 2020 JU, 2017 ME, 2016 FY14, 2016 AX147, 2015 HH10, 2014 LW21, 2013 XA22, 2006 UD63, 2006 HB, 2004 LU3, 2002 VR85, 90075, 85989, 68348, 66407, 66251, 54789, 54401, 513170, 495615, 494706, 349063, 315098, 19764, 175189, 162470, 136923, 136874, 11066, 8014, 7977, 6050, 5751, 2102, 1917, 1685
L65Bredenkamp Obs., 1 in MPEC 2020-L02 -- 137199
160Castelmartini Obs. in Italy, 3 in MPEC 2020-L02 -- 2013 XA22, 2010 EC135, 8014
V94Cherokee Ridge Obs., 1 in MPEC 2020-L02 -- 175189
Z99Clixby Obs. in England, 3 in MPEC 2020-L02 -- 2014 LW21, 2004 LU3, 2003 OC3
A94Cormons Obs. in Italy, 1 in MPEC 2020-L02 -- 138852
K87Dettelbach Vineyard Obs. in Germany, 6 in MPEC 2020-L02 -- 2020 KQ5, 2020 KN4, 2020 KG4, 2017 ME, 2013 XA22, 2006 HB
K83Forti Obs., 2 in MPEC 2020-L02 -- 331471, 136874
W46Foxfire Village Obs., 1 in MPEC 2020-L02 -- 2013 XA22
J95Great Shefford Obs. in England, 4 in MPECs 2020-L01 & 2020-L02 -- 2020 KS6, 2020 KK7, 2020 KB7, 2020 KA7
A17Guidestar Obs. in Germany, 1 in MPEC 2020-L02 -- 2006 UN216
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-L03 -- C/2020 K6
C401program code 1 via Kuban State Univ. Obs. in Russia, 2 in MPEC 2020-L02 -- 137199, 106589
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-L02 -- 331471
568`Enrique Solano in Spain on Mauna Kea in Hawaii, 3 in MPEC 2020-L02 -- 429094, 35396, 228502
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2020-L02 -- 2020 HH6, 2007 HX82
474Mt. John Obs. in New Zealand, 20 in MPECs 2020-L02, 2020-L03 & 2020-L04 -- 2020 KV, 2020 KT4, 2020 KQ5, 2020 KP7, 2020 KN5, 2020 KG6, 2020 KG4, 2020 KG3, 2020 KE5, 2020 KD4, 2020 KB7, 2020 KB5, C/2020 K6, 2020 JX1, 2020 JU, 2020 JR, 2020 JL3, 2020 JC3, 2020 HV9, 2020 HT2
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2020-L01 & 2020-L03 -- 2020 KK7, C/2020 K6
Z80Northolt Branch Obs. in England, 3 in MPEC 2020-L02 -- 2013 XA22, 2010 EC135, 8014
F51Pan-STARRS 1 (PS1) in Hawaii, 16 in MPECs 2020-L01, 2020-L02, 2020-L04 & 2020-L05 -- 2020 KQ7, 2020 KP7, 2020 KK7, 2020 JA1, 2020 AR2, 2013 CT36, 2009 QB36, 2000 WL63, 90147, 500094, 416224, 415715, 222165, 162566, 154278, 5011
F52Pan-STARRS 2 (PS2) in Hawaii, 7 in MPECs 2020-L01, 2020-L02 & 2020-L05 -- 2020 KQ7, 2020 KN4, 2020 KK7, 2016 FY14, 2008 LW16, 68350, 311321
V93Pin Oak Obs., 7 in MPEC 2020-L02 -- 2013 XA22, 495615, 184990, 175189, 137199, 136874, 8014
6584program code 4 via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-L02 -- 2006 SC
D29Purple Mtn. Obs. Xuyi Station in China, 2 in MPEC 2020-L02 -- 66251, 186822
Y16ROCG, 1 in MPEC 2020-L02 -- 52768
C95SATINO-1 in France, 1 in MPEC 2020-L02 -- 5693
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-L03 -- C/2020 K6
645Sloan Digital Sky Survey (SDSS) in New Mexico, 20 in MPEC 2020-L02 -- 2017 KT4, 2016 VH3, 2016 SG1, 2016 PF8, 2016 LM11, 2016 HV3, 2016 GA222, 2016 CB194, 2015 XW261, 2015 RE36, 2015 MN66, 2015 MN116, 2015 BJ514, 417816, 416151, 414429, 396794, 392704, 385605, 312956
I52Steward Obs. Mt. Lemmon Station in Arizona, 8 in MPECs 2020-L02, 2020-L03 & 2020-L05 -- 2020 KR5, 2020 KQ7, 2020 KO3, 2020 KN4, 2020 KG4, C/2020 K6, 2020 JG2, 2020 HS8
A16Tentlingen Obs. in Switzerland, 6 in MPEC 2020-L02 -- 2013 XA22, 2010 EC135, 495615, 477885, 159929, 136874
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-L02 -- 2015 FV284, 2007 BJ29
I41Zwicky Transient Facility in southern California, 1 in MPEC 2020-L02 -- 68350
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 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 KK7NEODyS1703211516.6e-09-8.99-8.990NEODyS: "Based on 33 optical observations (of which 1 are rejected as outliers) from 2020-05-16.325 to 2020-06-01.040."
2020 KC5JPL Sentry16002083-210631.96446e-05-6.08-6.090JPL: Computed at 06:30 May 31st Pacific time based on 44 observations spanning 3.6988 days (2020-May-26.365344 to 2020-May-30.064179). Diameter approximately 0.011 km. from weighted mean H=27.35.
2019 KY3JPL Sentry16002101-211022.1302e-07-7.50-7.540JPL: Computed at 06:59 Dec. 16th of 2019 Pacific time based on 41 observations spanning 6.9110 days (2019-May-25.379332 to 2019-Jun-01.29035). Diameter approximately 0.016 km. from weighted mean H=26.59.
2018 LBJPL Sentry16002092-2116113.61698e-06-6.28-6.800JPL: Computed at 19:49 June 3rd of 2018 Pacific time based on 33 observations spanning .97953 days (2018-Jun-01.16813 to 2018-Jun-02.147665). Diameter approximately 0.022 km. from weighted mean H=25.99.
2015 KH158JPL Sentry16002043-2115186.10736e-08-7.65-7.990JPL: Computed at 07:36 April 9th of 2017 Pacific time based on 10 observations spanning 1.0122 days (2015-May-23.15043 to 2015-May-24.16259). Diameter approximately 0.021 km. from weighted mean H=26.00.
2006 SCNEODyS17032047-210651.02e-05-5.06-5.060NEODyS: "Based on 113 optical observations (of which 9 are rejected as outliers) from 2006-09-16.247 to 2006-10-13.404."
JPL Sentry16002043-210981.632894e-06-5.80-5.940JPL: Computed at 06:38 today Pacific time based on 107 observations spanning 27.157 days (2006-Sep-16.24646 to 2006-Oct-13.403084). Diameter approximately 0.031 km. from weighted mean H=25.22.

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 June '20

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

2101Grabbed MPEC 2020-L04 - 2020 KP7 - see above
Grabbed MPEC 2020-L05 - 2020 KQ7 - see above
1805Grabbed MPEC 2020-L03 - Comet C/2020 K6 (Rankin) - see above
1703Noted that NEODyS has updated its 2006 SC risk assessment - see above
Noted that NEODyS has posted 2020 KK7 as an impact risk - see above
1600Noted that JPL Sentry has updated its 2006 SC risk assessment - see above
Noted that JPL Sentry has updated its 2015 KH158 risk assessment - see above
Noted that JPL Sentry has updated its 2018 LB risk assessment - see above
Noted that JPL Sentry has updated its 2019 KY3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KC5 risk assessment - see above
Grabbed MPEC 2020-L02 - Daily Orbit Update - see above
0517Grabbed MPEC 2020-L01 - 2020 KK7 - see above