Contents  on 18 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 18 June '20

Radar observation of four 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 2110 UTC when the database was dated 18 June


Data update noted at 2204 UTC when the database was dated 18 June



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

NEOCP Activity  on 18 June '20

The MPC's NEO Confirmation Page has 62 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 62 objects listed. Of these, 27 were "one nighters." So far The Tracking News has counted a total of 80 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 18 June '20

Minor Planet Electronic Circulars

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


MPEC 2020-M27 - "23:37 UT" - 2020 MJ


MPEC 2020-M26 - "19:41 UT" - Comet P/2020 K9 (Lemmon-Panstarrs)


MPEC 2020-M25 - "18:47 UT" - 2020 MH


MPEC 2020-M24 - "15:00 UT" - 2018 LZ13


<< DOU on 18 June '20 >>  MPEC 2020-M23 - "12:06 UT" - Daily Orbit Update


MPEC 2020-M22 - "11:34 UT" - 2020 MG


MPEC 2020-M21 - "11:32 UT" - 2020 MF


MPEC 2020-M20 - "11:31 UT" - 2020 ME


MPEC 2020-M19 - "11:29 UT" - 2020 LM1


MPEC 2020-M18 - "11:27 UT" - 2020 MD


MPEC 2020-M17 - "11:26 UT" - 2020 MC


MPEC 2020-M16 - "04:39 UT" - 2020 MB


MPEC 2020-M15 - "01:35 UT" - 2020 MA

Observers  on 18 June '20

A total of 33 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2020-M19 -- 2020 LM1
251Arecibo in Puerto Rico, 4 in radar -- 2020 HC6, 2020 HB6, 2016 HP6, 438908
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2020-M16, 2020-M17, 2020-M18, 2020-M19, 2020-M20, 2020-M21, 2020-M22 & 2020-M25 -- 2020 MH, 2020 MG, 2020 MF, 2020 ME, 2020 MD, 2020 MC, 2020 MB, 2020 LM1
T05ATLAS Haleakala in Hawaii, 21 in MPECs 2020-M23 & 2020-M26 -- P/2020 K9, 2020 JX1, 2020 FH6, 2017 XL2, 2017 QM18, 2012 QG8, 2010 JK33, 90147, 86039, 65733, 52768, 438908, 369452, 242450, 20826, 169675, 6053, 5653, 4954, 3691, 2102
T08ATLAS Mauna Loa in Hawaii, 23 in MPECs 2020-M19 & 2020-M23 -- 2020 LM1, 2020 LH, 2020 FW3, 2018 LM4, 86667, 85713, 85275, 68350, 510073, 495615, 477885, 474549, 468730, 425450, 363617, 331471, 159402, 145656, 138847, 137199, 136874, 11405, 4055
X74Campo dos Amarais Obs., 1 in MPEC 2020-M23 -- 136795
V06Catalina Sky Survey Kuiper Telescope in Arizona, 1 in MPEC 2020-M19 -- 2020 LM1
G58Chabot Obs. in northern California, 2 in MPECs 2020-M20 & 2020-M23 -- 2020 ME, 2010 EC135
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-M27 -- 2020 MJ
734Farpoint Obs. in Kansas, 1 in MPEC 2020-M19 -- 2020 LM1
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-M23 -- 8014
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-M26 -- P/2020 K9
C401program code 1 via Kuban State Univ. Obs. in Russia, 4 in MPEC 2020-M23 -- 163348, 137199, 106589, 8014
Q64LCO Siding Spring B in New South Wales, 1 in MPEC 2020-M23 -- 2008 QV11
K91LCO Sutherland A in South Africa, 1 in MPEC 2020-M23 -- 2020 LV
568^R. Wainscoat on Mauna Kea in Hawaii, 3 in MPECs 2020-M20, 2020-M25 & 2020-M26 -- 2020 MH, 2020 ME, P/2020 K9
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2020-M16 & 2020-M26 -- 2020 MB, P/2020 K9
F51Pan-STARRS 1 (PS1) in Hawaii, 33 in MPECs 2020-M16, 2020-M17, 2020-M18, 2020-M20, 2020-M21, 2020-M23, 2020-M25 & 2020-M26 -- 2020 MH, 2020 MF, 2020 ME, 2020 MD, 2020 MC, 2020 MB, 2020 LY, 2020 KY5, 2020 KV7, 2020 KQ5, P/2020 K9, 2020 JT2, 2020 JD, 2020 HS10, 2019 XG1, 2018 EP1, 1998 HN3, 85628, 54401, 471956, 452397, 414960, 361518, 222165, 219527, 189973, 18109, 155341, 154589, 141078, 136923, 10636, 5751
F52Pan-STARRS 2 (PS2) in Hawaii, 22 in MPECs 2020-M15, 2020-M16, 2020-M17, 2020-M18, 2020-M21, 2020-M22, 2020-M23, 2020-M25 & 2020-M27 -- 2020 MJ, 2020 MH, 2020 MG, 2020 MF, 2020 MD, 2020 MC, 2020 MB, 2020 MA, 2020 LM, 2020 KM3, 2020 KJ7, 2020 JV, 2020 HS8, 2020 HG6, 2016 PL1, 2000 WM107, 468910, 438908, 422977, 354952, 351815, 162470
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 19 in MPEC 2020-M23 -- 2020 LE, 2020 KR1, 2020 HS8, 2020 HO10, 2020 HH6, 2017 QM18, 2014 LW21, 2010 JV153, 2010 EC135, 2007 HX82, 2006 UD63, 2006 HB, 2005 MR5, 2004 LU3, 2003 OC3, 2003 MS2, 2003 BK47, 163348, 8014
D29Purple Mtn. Obs. Xuyi Station in China, 10 in MPEC 2020-M23 -- 2020 JR3, 2020 BO5, 2007 OY, 2000 AH205, 438908, 418416, 218863, 152756, 6050, 4257
V83Rolling Hills Obs. in Missouri, 1 in MPEC 2020-M23 -- 8014
H36Sandlot Obs. in Kansas, 4 in MPECs 2020-M18, 2020-M19, 2020-M23 & 2020-M27 -- 2020 MJ, 2020 MD, 2020 LV, 2020 LM1
C95SATINO-1 in France, 1 in MPEC 2020-M23 -- 9400
204Schiaparelli Obs. in Italy, 2 in MPECs 2020-M15 & 2020-M20 -- 2020 ME, 2020 MA
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-M27 -- 2020 MJ
858Tebbutt Obs. in New Mexico, 3 in MPECs 2020-M20, 2020-M21 & 2020-M26 -- 2020 MF, 2020 ME, P/2020 K9
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-M24 -- 2018 LZ13
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 2 in MPECs 2020-M23 & 2020-M24 -- 2020 FA1, 2018 LZ13
L01Visnjan Obs. in Croatia, 3 in MPECs 2020-M15, 2020-M22 & 2020-M27 -- 2020 MJ, 2020 MG, 2020 MA
C51WISE in Earth polar orbit, 3 in MPEC 2020-M23 -- 2020 HV1, 2014 LQ26, 2010 JK33
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2020-M23 -- 495615, 137199
N88Xingming Obs. #3, 1 in MPEC 2020-M19 -- 2020 LM1
I41Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-M23 -- 352143, 5836, 2368
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 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 LVJPL Sentry16002097-211448.725e-06-5.67-5.720JPL: Computed at 06:46 today Pacific time based on 30 observations spanning 3.9937 days (2020-Jun-14.38305 to 2020-Jun-18.3767). Diameter approximately 0.030 km. from weighted mean H=25.27.
NEODyS16002097-2118151.65e-05-5.40-5.430NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2020-06-14.384 to 2020-06-18.378."
2020 FA1JPL Sentry16002100-211980.000117287-5.08-5.560JPL: Computed at 06:36 today Pacific time based on 65 observations spanning 92.784 days (2020-Mar-16.47938 to 2020-Jun-17.263335). Diameter approximately 0.019 km. from weighted mean H=26.27.
NEODyS16002102-211838.59e-06-6.21-6.320NEODyS: "Based on 65 optical observations (of which 0 are rejected as outliers) from 2020-03-16.480 to 2020-06-17.264."

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 18 June '20

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

2358Grabbed MPEC 2020-M27 - 2020 MJ - see above
2204Noted Radar Astrometry database update - see above
2110Grabbed MPEC 2020-M26 - Comet P/2020 K9 (Lemmon-Panstarrs) - see above
Noted Radar Astrometry database update - see above
1900Grabbed MPEC 2020-M25 - 2020 MH - see above
1600Noted that JPL Sentry has updated its 2020 FA1 risk assessment - see above
Noted that NEODyS has updated its 2020 FA1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 LV risk assessment - see above
Noted that NEODyS has updated its 2020 LV risk assessment - see above
Grabbed MPEC 2020-M17 - 2020 MC - see above
Grabbed MPEC 2020-M18 - 2020 MD - see above
Grabbed MPEC 2020-M19 - 2020 LM1 - see above
Grabbed MPEC 2020-M20 - 2020 ME - see above
Grabbed MPEC 2020-M21 - 2020 MF - see above
Grabbed MPEC 2020-M22 - 2020 MG - see above
Grabbed MPEC 2020-M23 - Daily Orbit Update - see above
Grabbed MPEC 2020-M24 - 2018 LZ13 - see above
0533Grabbed MPEC 2020-M16 - 2020 MB - see above
0407Grabbed MPEC 2020-M15 - 2020 MA - see above