Contents  on 24 May '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 24 May '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, 38 were "one nighters." So far The Tracking News has counted a total of 77 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 24 May '20

Minor Planet Electronic Circulars

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


MPEC 2020-K155 - "20:54 UT" - Comet C/2020 K2 (Panstarrs)


MPEC 2020-K154 - "15:05 UT" - 2020 KB4


<< DOU on 24 May '20 >>  MPEC 2020-K153 - "12:02 UT" - Daily Orbit Update


MPEC 2020-K152 - "11:50 UT" - 2020 KZ3


MPEC 2020-K151 - "11:48 UT" - 2020 KY3


MPEC 2020-K150 - "11:47 UT" - 2020 KX3


MPEC 2020-K149 - "11:44 UT" - 2020 KW3


MPEC 2020-K148 - "02:04 UT" - 2019 FH

Observers  on 24 May '20

A total of 36 observers appear in today's MPECs.

CodeObserver / observatory
L2729PREMOTE Obs., 1 in MPEC 2020-K155 -- C/2020 K2
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2020-K149 & 2020-K150 -- 2020 KX3, 2020 KW3
T05ATLAS Haleakala in Hawaii, 6 in MPEC 2020-K153 -- 2015 FP332, 66008, 184990, 137199, 106589, 3752
T08ATLAS Mauna Loa in Hawaii, 39 in MPEC 2020-K153 -- 2020 KS, 2020 KB, 2020 HV9, 2018 GX4, 2016 AX147, 2013 XA22, 2013 ON5, 2004 LU3, 2002 VR85, 85628, 68348, 66251, 65909, 498066, 495615, 494706, 374188, 349063, 315098, 218863, 210012, 19764, 190166, 186822, 175189, 162470, 152964, 145656, 142555, 141053, 138911, 136923, 136618, 11066, 8014, 7753, 6050, 2102, 1685
4131Rob McNaught via Australian Natl. Univ. 1m telescope in New South Wales, 1 in MPEC 2020-K153 -- 408751
703Catalina Sky Survey (CSS) in Arizona, 5 in MPEC 2020-K153 -- 184990, 163693, 137199, 106589, 1866
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 15 in MPECs 2020-K149, 2020-K151, 2020-K152 & 2020-K153 -- 2020 KZ3, 2020 KY3, 2020 KW3, 2020 KT, 2020 KS2, 2020 KM2, 2020 KG2, 2020 KE3, 2020 KB2, 2020 JZ2, 2020 JW1, 2020 JH1, 2020 JH, 2020 JB3, 2017 MA4
K87Dettelbach Vineyard Obs. in Germany, 3 in MPEC 2020-K153 -- 2020 KV, 2020 KO2, 2020 JD
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 5 in MPEC 2020-K153 -- 2013 XA22, 86667, 65909, 36183, 186822
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-K153 -- 4947
K83Forti Obs., 2 in MPEC 2020-K153 -- 2020 FW3, 2010 EC135
157Frasso Sabino Obs. in Italy, 1 in MPEC 2020-K153 -- 2020 HH6
K88GINOP-KHK in Hungary, 1 in MPEC 2020-K155 -- C/2020 K2
U76Glendora Obs., 1 in MPEC 2020-K153 -- 99935
K73Gravina Obs. in Italy, 5 in MPEC 2020-K153 -- 2000 KA, 85184, 495615, 331471, 106589
A17Guidestar Obs. in Germany, 1 in MPEC 2020-K155 -- C/2020 K2
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-K155 -- C/2020 K2
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-K153 -- 137199
568^R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2020-K154 -- 2020 KB4
G96Mt. Lemmon Survey (MLS) in Arizona, 31 in MPECs 2020-K149, 2020-K150, 2020-K151, 2020-K152 & 2020-K153 -- 2020 KZ3, 2020 KY3, 2020 KX3, 2020 KW3, 2020 HH2, 2019 XG1, 2019 TL4, 2018 LM4, 2018 GX4, 2017 BE32, 2009 KK8, 2006 MT6, 2002 VR85, 85628, 68278, 65674, 520808, 498550, 495331, 492143, 468730, 416231, 368949, 23187, 218863, 215167, 162980, 154453, 152964, 142781, 7753
F51Pan-STARRS 1 (PS1) in Hawaii, 21 in MPECs 2020-K151, 2020-K153 & 2020-K154 -- 2020 KY3, 2020 KX1, 2020 KV, 2020 KB4, 2020 JP3, 2020 JO1, 2020 JN3, 2020 HS8, 2020 HH10, 2020 HD7, 2020 HC10, 2020 HB10, 2020 FW3, 2010 JJ3, 495891, 438908, 36183, 335758, 177255, 155341, 137911
F52Pan-STARRS 2 (PS2) in Hawaii, 18 in MPECs 2020-K149, 2020-K150, 2020-K153 & 2020-K155 -- 2020 KY, 2020 KX3, 2020 KW3, 2020 KC, C/2020 K2, 2020 JP3, 2020 JH1, 2020 HS8, 2014 JO25, 2010 EC135, 490684, 477885, 275714, 238456, 18109, 175729, 175189, 136923
122Pises Obs. in France, 4 in MPEC 2020-K153 -- 85275, 66251, 7088, 1917
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-K153 -- 269690
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2020-K153 -- 2020 KJ3
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-K155 -- C/2020 K2
C95SATINO-1 in France, 1 in MPEC 2020-K153 -- 4450
L38Schafsweide Obs., 1 in MPEC 2020-K153 -- 184990
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-K153 -- 242450
I52Steward Obs. Mt. Lemmon Station in Arizona, 24 in MPECs 2020-K150, 2020-K151, 2020-K152, 2020-K153 & 2020-K154 -- 2020 KZ3, 2020 KZ2, 2020 KY3, 2020 KY, 2020 KX3, 2020 KU1, 2020 KS, 2020 KQ1, 2020 KO2, 2020 KM1, 2020 KL3, 2020 KJ3, 2020 KF2, 2020 KD3, 2020 KC3, 2020 KB4, 2020 KB3, 2020 JV2, 2020 JV, 2020 JR, 2020 JQ2, 2020 JO1, 2020 JN3, 2020 JG2
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 3 in MPECs 2020-K151, 2020-K152 & 2020-K155 -- 2020 KZ3, 2020 KY3, C/2020 K2
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-K153 -- 2014 XG8
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 2 in MPECs 2020-K148 & 2020-K153 -- 2020 HU6, 2019 FH
L01Visnjan Obs. in Croatia, 1 in MPEC 2020-K155 -- C/2020 K2
N88Xingming Obs. #3, 1 in MPEC 2020-K155 -- C/2020 K2
I41Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-K153 -- 2006 HB, 68350, 477885
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 May '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 KE3JPL Sentry1630R E M O V E DJPL: Risk listing removed at 1521 UTC today
NEODyS1630R E M O V E D-
2020 KD3JPL Sentry16302075-2114990.000409010229-4.35-4.650JPL: Computed at 08:28 today Pacific time based on 18 observations spanning 7.7796 days (2020-May-16.380606 to 2020-May-24.16021). Diameter approximately 0.017 km. from weighted mean H=26.48.
NEODyS16302069-21171984.05e-04-4.37-4.680NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2020-05-16.381 to 2020-05-24.161."
2020 KB3JPL Sentry16302052-208144.136714e-07-6.12-6.190JPL: Computed at 08:19 today Pacific time based on 25 observations spanning 3.8140 days (2020-May-20.375682 to 2020-May-24.18973). Diameter approximately 0.043 km. from weighted mean H=24.48.
NEODyS16302052-207224.04e-07-6.30-6.30NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2020-05-20.376 to 2020-05-24.191."
2020 KM1JPL Sentry1630R E M O V E DJPL: Risk listing removed at 1519 UTC today
NEODyS1630R E M O V E D-
2020 KSJPL Sentry16302064-2119193.80286182e-05-4.98-5.160JPL: Computed at 08:32 today Pacific time based on 90 observations spanning 7.8286 days (2020-May-16.491732 to 2020-May-24.32037). Diameter approximately 0.024 km. from weighted mean H=25.71.
NEODyS16302055-2117432.43e-05-5.18-5.40NEODyS: "Based on 90 optical observations (of which 2 are rejected as outliers) from 2020-05-16.493 to 2020-05-24.321."
2020 HU6JPL Sentry1630R E M O V E DJPL: Risk listing removed at 1457 UTC today
NEODyS1630R E M O V E D-

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 24 May '20

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

2248Grabbed MPEC 2020-K155 - Comet C/2020 K2 (Panstarrs) - see above
1630Noted that JPL Sentry has removed 2020 HU6 as an impact risk - see above
Noted that NEODyS has removed 2020 HU6 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
Noted that JPL Sentry has updated its 2020 KD3 risk assessment - see above
Noted that NEODyS has updated its 2020 KD3 risk assessment - see above
Noted that JPL Sentry has removed 2020 KE3 as an impact risk - see above
Noted that NEODyS has removed 2020 KE3 as an impact risk - see above
Noted that JPL Sentry has removed 2020 KM1 as an impact risk - see above
Noted that NEODyS has removed 2020 KM1 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 KS risk assessment - see above
Noted that NEODyS has updated its 2020 KS risk assessment - see above
Grabbed MPEC 2020-K149 - 2020 KW3 - see above
Grabbed MPEC 2020-K150 - 2020 KX3 - see above
Grabbed MPEC 2020-K151 - 2020 KY3 - see above
Grabbed MPEC 2020-K152 - 2020 KZ3 - see above
Grabbed MPEC 2020-K153 - Daily Orbit Update - see above
Grabbed MPEC 2020-K154 - 2020 KB4 - see above
0440Grabbed MPEC 2020-K148 - 2019 FH - see above