Contents  on 21 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.

Radar Astrometry  on 21 June '20

Radar observation of five objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 0501 UTC when the database was dated 20 June


Data update noted at 1830 UTC when the database was dated 20 June



Photometry and some astrometry is needed for upcoming radar targets. See Arecibo and Goldstone schedules.

NEOCP Activity  on 21 June '20

The MPC's NEO Confirmation Page has 47 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 47 objects listed. Of these, 36 were "one nighters." So far The Tracking News has counted a total of 66 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 21 June '20

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been fourteen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-M63 - "22:38 UT" - 2020 MA1


MPEC 2020-M62 - "22:36 UT" - 2020 MZ


MPEC 2020-M61 - "21:29 UT" - 2020 JW3


MPEC 2020-M60 - "20:59 UT" - 2020 MY


MPEC 2020-M59 - "20:57 UT" - 2020 MX


MPEC 2020-M58 - "18:27 UT" - 2020 KZ7


MPEC 2020-M57 - "15:00 UT" - 2019 GA


MPEC 2020-M56 - "15:00 UT" - 2016 ED85


MPEC 2020-M55 - "14:43 UT" - 2020 LK2


MPEC 2020-M54 - "14:40 UT" - 2020 LJ2


MPEC 2020-M53 - "12:48 UT" - 2020 MV


<< DOU on 21 June '20 >>  MPEC 2020-M52 - "12:01 UT" - Daily Orbit Update


MPEC 2020-M51 - "11:37 UT" - 2020 MT


MPEC 2020-M50 - "02:24 UT" - 2020 LG2

Observers  on 21 June '20

A total of 48 observers appear in today's MPECs.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 5 in MPECs 2020-M51, 2020-M52, 2020-M60, 2020-M62 & 2020-M63 -- 2020 MZ, 2020 MY, 2020 MT, 2020 MA1, 2020 LC
251Arecibo in Puerto Rico, 5 in radar -- 2020 KP3, 2020 JY, 2020 JF1, 2020 HS6, 2013 XA22
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2020-M52 & 2020-M60 -- 2020 MY, 2020 MR, 2020 MP, 2020 LY1, 2015 YP10, 2004 QD17
T05ATLAS Haleakala in Hawaii, 2 in MPEC 2020-M52 -- 105140, 3752
T08ATLAS Mauna Loa in Hawaii, 39 in MPECs 2020-M50, 2020-M52 & 2020-M62 -- 2020 MZ, 2020 MK, 2020 LG2, 2020 HH6, 2017 QM18, 2015 HH10, 2013 ON5, 2010 JV153, 2006 HB, 2004 LU3, 87311, 68348, 66251, 54789, 54401, 511523, 494706, 477885, 428086, 380128, 354952, 333555, 331471, 241662, 19764, 190166, 175189, 163348, 159608, 137802, 136923, 8014, 7977, 6569, 6050, 5751, 1917, 1685, 887
Z84Calar Alto Schmidt in Spain, 2 in MPECs 2020-M60 & 2020-M62 -- 2020 MZ, 2020 MY
X74Campo dos Amarais Obs., 2 in MPEC 2020-M52 -- 2017 QM18, 99935
Z45Cosmos Obs., 3 in MPEC 2020-M52 -- 66251, 477885, 331471
V16Dark Sky New Mexico Obs. in New Mexico, 1 in MPEC 2020-M52 -- 85275
958Dax Obs. in France, 2 in MPECs 2020-M60 & 2020-M62 -- 2020 MZ, 2020 MY
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 12 in MPECs 2020-M51, 2020-M52, 2020-M56, 2020-M57, 2020-M59, 2020-M60, 2020-M62 & 2020-M63 -- 2020 MZ, 2020 MY, 2020 MX, 2020 MT, 2020 ML, 2020 MA1, 2020 LV, 2020 LG2, 2020 LG1, 2020 LC, 2019 GA, 2016 ED85
734Farpoint Obs. in Kansas, 1 in MPEC 2020-M52 -- 2020 HO10
K83Forti Obs., 3 in MPECs 2020-M52 & 2020-M60 -- 2020 MY, 184990, 154278
W46Foxfire Village Obs., 3 in MPEC 2020-M52 -- 477885, 331471, 163348
203GiaGa Obs. in Italy, 1 in MPEC 2020-M60 -- 2020 MY
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-M52 -- 1943
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-M52 -- 2020 BZ12
U68JPL SynTrack Robotic Telescope, 1 in MPEC 2020-M52 -- 85275
K91LCO Sutherland A in South Africa, 1 in MPEC 2020-M52 -- 2020 LV
K38M57 Obs. in Italy, 1 in MPEC 2020-M52 -- 2020 MK
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-M52 -- 8014
W92MASTER OAFA Obs., 1 in MPEC 2020-M52 -- 175189
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2020-M52 -- 6050
568^R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2020-M54 & 2020-M55 -- 2020 LK2, 2020 LJ2
V01Mountainville Obs. in Utah, 1 in MPEC 2020-M52 -- 2020 MK
474Mt. John Obs. in New Zealand, 7 in MPECs 2020-M52, 2020-M54, 2020-M55 & 2020-M59 -- 2020 MX, 2020 LK2, 2020 LJ2, 2020 KJ5, 2020 KG6, 2020 JQ2, 2017 UX44
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2020-M52 -- 2018 BZ2
Z80Northolt Branch Obs. in England, 2 in MPEC 2020-M52 -- 85275, 137199
F51Pan-STARRS 1 (PS1) in Hawaii, 15 in MPECs 2020-M51, 2020-M52, 2020-M54, 2020-M55, 2020-M59, 2020-M60, 2020-M61 & 2020-M63 -- 2020 MY, 2020 MX, 2020 MT, 2020 MA1, 2020 LY1, 2020 LK2, 2020 LJ2, 2020 LC, 2020 KW7, 2020 JW3, 2020 JQ2, 523670, 436030, 200840, 136839
F52Pan-STARRS 2 (PS2) in Hawaii, 16 in MPECs 2020-M51, 2020-M52, 2020-M58 & 2020-M61 -- 2020 MT, 2020 LX, 2020 LR, 2020 LC, 2020 KZ7, 2020 KK5, 2020 JW3, 2009 QD34, 2007 OY, 2004 FF29, 2002 VR85, 495891, 471956, 368949, 175189, 5751
K63Pascoli Obs. in Italy, 2 in MPECs 2020-M60 & 2020-M62 -- 2020 MZ, 2020 MY
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 3 in MPECs 2020-M52 & 2020-M62 -- 2020 MZ, 2020 MG, 2020 ME
104San Marcello Pistoiese Obs. in Italy, 7 in MPECs 2020-M52, 2020-M60 & 2020-M62 -- 2020 MZ, 2020 MY, 2020 LC, 2003 OC3, 2003 MS2, 2003 BK47, 2001 QC34
H36Sandlot Obs. in Kansas, 2 in MPECs 2020-M51 & 2020-M62 -- 2020 MZ, 2020 MT
C95SATINO-1 in France, 1 in MPEC 2020-M52 -- 10145
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-M60 -- 2020 MY
G40"G. Gasparovic in Croatia via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-M52 -- 2020 DB3
587Sormano Obs. in Italy, 1 in MPEC 2020-M60 -- 2020 MY
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2020-M61 -- 2020 JW3
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2020-M52 & 2020-M62 -- 2020 MZ, 85275
I93St. Pardon de Conques Obs. in France, 4 in MPECs 2020-M50, 2020-M52, 2020-M60 & 2020-M62 -- 2020 MZ, 2020 MY, 2020 LG2, 2020 LC
858Tebbutt Obs. in New Mexico, 2 in MPECs 2020-M60 & 2020-M62 -- 2020 MZ, 2020 MY
W33Transit Dreams Obs., 1 in MPEC 2020-M62 -- 2020 MZ
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2020-M53 -- 2020 MV
L01Visnjan Obs. in Croatia, 7 in MPECs 2020-M50, 2020-M52, 2020-M60 & 2020-M62 -- 2020 MZ, 2020 MY, 2020 LG2, 2020 LC, 2015 FP332, 2010 JV153, 2010 EC135
C51WISE in Earth polar orbit, 2 in MPECs 2020-M53 & 2020-M58 -- 2020 MV, 2020 KZ7
N88Xingming Obs. #3, 1 in MPEC 2020-M62 -- 2020 MZ
I41Zwicky Transient Facility in southern California, 1 in MPEC 2020-M52 -- 2006 HB
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 June '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2359 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 MLNEODyS2208R E M O V E D-
2020 LG1NEODyS22082055-209124.88e-08-5.03-5.060NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2020-06-01.557 to 2020-06-21.074."
2020 LVNEODyS22082089-2118181.22e-05-5.53-5.560NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2020-06-14.384 to 2020-06-21.169."
JPL Sentry18302097-211445.703132e-06-5.85-5.950JPL: Computed at 06:42 today Pacific time based on 37 observations spanning 6.7850 days (2020-Jun-14.38305 to 2020-Jun-21.16805). Diameter approximately 0.030 km. from weighted mean H=25.27.
2017 AT20JPL Sentry18302039-21162315.3083219e-06-6.49-6.950JPL: Computed at 19:18 April 9th of 2017 Pacific time based on 6 observations spanning 1.0436 days (2017-Jan-03.37171 to 2017-Jan-04.415357). Diameter approximately 0.013 km. from weighted mean H=27.13.
2008 KN11JPL Sentry18302046-204613.601e-08-6.26-6.260JPL: Computed at 07:33 April 14th of 2017 Pacific time based on 132 observations spanning 21.819 days (2008-May-30.33435 to 2008-Jun-21.152984). Diameter approximately 0.075 km. from weighted mean H=23.27.

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 21 June '20

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

2332Grabbed MPEC 2020-M62 - 2020 MZ - see above
Grabbed MPEC 2020-M63 - 2020 MA1 - see above
2208Noted that NEODyS has updated its 2020 LG1 risk assessment - see above
Noted that NEODyS has updated its 2020 LV risk assessment - see above
Noted that NEODyS has removed 2020 ML as an impact risk - see above
Grabbed MPEC 2020-M59 - 2020 MX - see above
Grabbed MPEC 2020-M60 - 2020 MY - see above
Grabbed MPEC 2020-M61 - 2020 JW3 - see above
1830Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above
Noted that JPL Sentry has updated its 2017 AT20 risk assessment - see above
Noted that JPL Sentry has updated its 2020 LV risk assessment - see above
Grabbed MPEC 2020-M51 - 2020 MT - see above
Grabbed MPEC 2020-M52 - Daily Orbit Update - see above
Grabbed MPEC 2020-M53 - 2020 MV - see above
Grabbed MPEC 2020-M54 - 2020 LJ2 - see above
Grabbed MPEC 2020-M55 - 2020 LK2 - see above
Grabbed MPEC 2020-M56 - 2016 ED85 - see above
Grabbed MPEC 2020-M57 - 2019 GA - see above
Grabbed MPEC 2020-M58 - 2020 KZ7 - see above
Noted Radar Astrometry database update - see above
0501Noted Radar Astrometry database update - see above
0400Grabbed MPEC 2020-M50 - 2020 LG2 - see above