Contents  on 25 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 25 May '20

The MPC's NEO Confirmation Page has 67 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 67 objects listed. Of these, 42 were "one nighters." So far The Tracking News has counted a total of 87 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 25 May '20

Minor Planet Electronic Circulars

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


MPEC 2020-K170 - "23:13 UT" - 2020 KM4


MPEC 2020-K169 - "23:02 UT" - 2020 KL4


MPEC 2020-K168 - "22:54 UT" - 2020 KK4


MPEC 2020-K167 - "22:51 UT" - 2020 JR3


MPEC 2020-K166 - "22:08 UT" - 2020 KJ4


MPEC 2020-K165 - "21:09 UT" - A/2020 H9


MPEC 2020-K164 - "15:59 UT" - 2020 KG4


<< DOU on 25 May '20 >>  MPEC 2020-K163 - "12:03 UT" - Daily Orbit Update


MPEC 2020-K162 - "04:40 UT" - Comet C/2020 K4 (Panstarrs)


MPEC 2020-K161 - "04:35 UT" - 1998 VP


MPEC 2020-K160 - "04:13 UT" - 2020 JQ3


MPEC 2020-K159 - "03:51 UT" - Comet C/2020 K3 (Leonard)


MPEC 2020-K158 - "02:05 UT" - 2020 KF4


MPEC 2020-K157 - "02:04 UT" - 2020 KE4


MPEC 2020-K156 - "02:02 UT" - 2020 KD4

Observers  on 25 May '20

A total of 42 observers appear in today's MPECs.

CodeObserver / observatory
U71AHS Obs., 1 in MPEC 2020-K159 -- C/2020 K3
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2020-K161 & 2020-K163 -- 2020 KZ3, 1998 VP
T05ATLAS Haleakala in Hawaii, 19 in MPEC 2020-K163 -- 2020 KB, 2020 HT2, 2020 BO5, 2019 UO9, 2014 JO25, 2001 QC34, 2000 KA, 54401, 438908, 433992, 420302, 382503, 36183, 169675, 137158, 137064, 8014, 6053, 4954
T08ATLAS Mauna Loa in Hawaii, 20 in MPEC 2020-K163 -- 2010 EC135, 90075, 86667, 85275, 85184, 477885, 35107, 333555, 331471, 318050, 25330, 159929, 152756, 138847, 136874, 115052, 11405, 9400, 6569, 5626
160Castelmartini Obs. in Italy, 6 in MPEC 2020-K163 -- 2002 VR85, 85184, 68350, 66251, 333555, 8014
703Catalina Sky Survey (CSS) in Arizona, 21 in MPECs 2020-K159 & 2020-K163 -- C/2020 K3, 2020 FW3, 86667, 85184, 68350, 524530, 436030, 425450, 40267, 35107, 333555, 25330, 242216, 154278, 152978, 137170, 11405, 9400, 8566, 4055, 1864
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 15 in MPECs 2020-K161, 2020-K163 & 2020-K165 -- 2020 KW2, 2020 KU3, 2020 KT3, 2020 KR1, 2020 KL3, 2020 KK1, 2020 KF3, 2020 KA2, 2020 JY2, 2020 JW1, 2020 HX7, 2020 HA8, 2020 H9, 2020 FK5, 1998 VP
Z99Clixby Obs. in England, 1 in MPEC 2020-K159 -- C/2020 K3
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2020-K165 -- 2020 H9
X31Galilei Obs., 1 in MPEC 2020-K164 -- 2020 KG4
J95Great Shefford Obs. in England, 6 in MPECs 2020-K156, 2020-K157, 2020-K159, 2020-K163, 2020-K164 & 2020-K170 -- 2020 KP3, 2020 KM4, 2020 KG4, 2020 KE4, 2020 KD4, C/2020 K3
A17Guidestar Obs. in Germany, 1 in MPEC 2020-K168 -- 2020 KK4
P87Hirao Obs., 1 in MPEC 2020-K159 -- C/2020 K3
H06%Ernesto Guido in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-K159 -- C/2020 K3
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-K159 -- C/2020 K3
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-K165 -- 2020 H9
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-K163 -- 137199
Z43Landehen Obs., 1 in MPEC 2020-K163 -- 85184
K38M57 Obs. in Italy, 1 in MPEC 2020-K163 -- 331471
568^R. Wainscoat on Mauna Kea in Hawaii, 8 in MPECs 2020-K157, 2020-K158, 2020-K161, 2020-K162, 2020-K164, 2020-K165, 2020-K167 & 2020-K169 -- 2020 KL4, 2020 KG4, 2020 KF4, 2020 KE4, C/2020 K4, 2020 JR3, 2020 H9, 1998 VP
V01Mountainville Obs. in Utah, 1 in MPEC 2020-K163 -- 2013 XA22
474Mt. John Obs. in New Zealand, 1 in MPEC 2020-K165 -- 2020 H9
G96Mt. Lemmon Survey (MLS) in Arizona, 29 in MPECs 2020-K163, 2020-K166 & 2020-K168 -- 2020 KS, 2020 KP2, 2020 KK4, 2020 KJ4, 2020 KD4, 2020 KC, 2020 JH1, 2020 JH, 2020 HS10, 2016 FY14, 2014 UA192, 2013 XA22, 2007 WV3, 2007 OY, 2006 KY86, 2006 KQ21, 1998 HN3, 54789, 495615, 354952, 311321, 252793, 228587, 215588, 136923, 9162, 6047, 2202, 2102
L02NOAK Obs., 1 in MPEC 2020-K159 -- C/2020 K3
F51Pan-STARRS 1 (PS1) in Hawaii, 34 in MPECs 2020-K156, 2020-K157, 2020-K158, 2020-K160, 2020-K161, 2020-K162, 2020-K163, 2020-K164, 2020-K165, 2020-K166, 2020-K167, 2020-K169 & 2020-K170 -- 2020 KM4, 2020 KL4, 2020 KJ4, 2020 KG4, 2020 KF4, 2020 KE4, 2020 KD4, C/2020 K4, 2020 JV2, 2020 JR3, 2020 JR, 2020 JQ3, 2020 JH, 2020 HT6, 2020 HS10, 2020 H9, 2020 FH6, 2019 XG1, 2018 GX4, 2017 MW7, 2002 XP40, 2000 AH205, 1998 VP, 1998 HN3, 68278, 510262, 495891, 495615, 361518, 331471, 275558, 141078, 7753, 4947
F52Pan-STARRS 2 (PS2) in Hawaii, 26 in MPECs 2020-K156, 2020-K157, 2020-K160, 2020-K161, 2020-K163, 2020-K165, 2020-K166, 2020-K168 & 2020-K169 -- 2020 KY2, 2020 KN2, 2020 KL4, 2020 KK4, 2020 KJ4, 2020 KE4, 2020 KD4, 2020 JQ3, 2020 JD, 2020 HV9, 2020 HH6, 2020 H9, 2017 FQ90, 2004 MW2, 1998 VP, 1998 MR24, 65909, 54401, 513125, 494706, 241662, 9950, 6050, 4954, 4257, 2202
K63Pascoli Obs. in Italy, 2 in MPECs 2020-K166 & 2020-K168 -- 2020 KK4, 2020 KJ4
V93Pin Oak Obs., 3 in MPEC 2020-K163 -- 99935, 86667, 175189
654Pomona College Table Mtn. Obs. in southern California, 1 in MPEC 2020-K163 -- 2020 KX3
104San Marcello Pistoiese Obs. in Italy, 3 in MPECs 2020-K163 & 2020-K168 -- 2020 KK4, 2013 XA22, 2010 EC135
C95SATINO-1 in France, 1 in MPEC 2020-K163 -- 4487
K96Savelli Obs., 1 in MPEC 2020-K168 -- 2020 KK4
033Schwarzschild Obs. in Germany, 15 in MPEC 2020-K163 -- 2020 KV, 2020 KU, 2020 KT3, 2020 KP3, 2020 KO3, 2020 KO2, 2020 KJ3, 2020 KJ, 2020 KE3, 2020 KD3, 2020 KD1, 2020 JY1, 2020 JQ3, 2020 JG2, 2013 XA22
G402program code 2 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-K159 -- C/2020 K3
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-K163 -- 242450
L06Sormano2 Obs. in Italy, 1 in MPEC 2020-K159 -- C/2020 K3
I93St. Pardon de Conques Obs. in France, 6 in MPECs 2020-K156, 2020-K157, 2020-K159, 2020-K164, 2020-K166 & 2020-K168 -- 2020 KK4, 2020 KJ4, 2020 KG4, 2020 KE4, 2020 KD4, C/2020 K3
I52Steward Obs. Mt. Lemmon Station in Arizona, 37 in MPECs 2020-K156, 2020-K158, 2020-K163, 2020-K164, 2020-K166 & 2020-K168 -- 2020 KZ2, 2020 KZ1, 2020 KY2, 2020 KX3, 2020 KX1, 2020 KX, 2020 KV1, 2020 KU1, 2020 KS, 2020 KP3, 2020 KP2, 2020 KP1, 2020 KO2, 2020 KO1, 2020 KN2, 2020 KK4, 2020 KJ4, 2020 KJ3, 2020 KJ1, 2020 KG4, 2020 KF4, 2020 KD4, 2020 KD3, 2020 KD2, 2020 KB3, 2020 KB1, 2020 KB, 2020 JX1, 2020 JV2, 2020 JU1, 2020 JP1, 2020 JN3, 2020 JL3, 2020 JE1, 2020 JC3, 2020 JB, 2018 NP1
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 1 in MPEC 2020-K163 -- 1998 VP
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-K163 -- 2015 MT59
L01Visnjan Obs. in Croatia, 6 in MPECs 2020-K157, 2020-K158, 2020-K159, 2020-K160, 2020-K164 & 2020-K170 -- 2020 KM4, 2020 KG4, 2020 KF4, 2020 KE4, C/2020 K3, 2020 JQ3
N88Xingming Obs. #3, 2 in MPECs 2020-K159 & 2020-K166 -- 2020 KJ4, C/2020 K3
I41Zwicky Transient Facility (ZTF) in southern California, 4 in MPEC 2020-K163 -- 2018 LM4, 85184, 68350, 1866
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 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 KJ4JPL Sentry23582096-211732.0202e-06-8.50-8.560JPL: Computed at 16:40 today Pacific time based on 30 observations spanning 4.4628 days (2020-May-21.442349 to 2020-May-25.90519). Diameter approximately 0.004 km. from weighted mean H=29.91.
2020 KU3JPL Sentry1900R E M O V E DJPL: Risk listing removed at 1427 UTC today
2020 KO3NEODyS22152031-208932.08e-10-7.14-7.580NEODyS: "Based on 15 optical observations (of which 1 are rejected as outliers) from 2020-05-19.554 to 2020-05-23.422."
JPL Sentry19002031-208931.7783e-09-5.87-6.030JPL: Computed at 07:26 today Pacific time based on 15 observations spanning 3.8675 days (2020-May-19.553539 to 2020-May-23.42104). Diameter approximately 0.355 km. from weighted mean H=19.88.
2020 KD3JPL Sentry19002075-2114890.000174262755-4.69-5.010JPL: Computed at 07:31 today Pacific time based on 26 observations spanning 8.7740 days (2020-May-16.380606 to 2020-May-25.15464). Diameter approximately 0.018 km. from weighted mean H=26.40.
2020 KB3NEODyS22152052-207221.17e-07-6.70-6.840NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2020-05-20.376 to 2020-05-25.184."
JPL Sentry19002052-207823.9993e-07-6.07-6.100JPL: Computed at 07:22 today Pacific time based on 29 observations spanning 4.8076 days (2020-May-20.375682 to 2020-May-25.18333). Diameter approximately 0.044 km. from weighted mean H=24.43.
2020 KN2NEODyS22152063-2118223.42e-05-5.31-5.330NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2020-05-20.413 to 2020-05-25.216."
JPL Sentry19002063-2119133.737959e-05-5.28-5.310JPL: Computed at 07:29 today Pacific time based on 33 observations spanning 4.8032 days (2020-May-20.412007 to 2020-May-25.21518). Diameter approximately 0.016 km. from weighted mean H=26.60.
2020 KD1NEODyS2215204223.06e-07-7.67-7.930NEODyS: "Based on 49 optical observations (of which 0 are rejected as outliers) from 2020-05-18.331 to 2020-05-22.070."
JPL Sentry19002042-206121.5275e-07-8.00-8.050JPL: Computed at 07:29 today Pacific time based on 49 observations spanning 3.7391 days (2020-May-18.33002 to 2020-May-22.06909). Diameter approximately 0.009 km. from weighted mean H=27.93.
2020 KUJPL Sentry19002070-2108200.000132168215-5.84-6.140JPL: Computed at 07:30 today Pacific time based on 59 observations spanning 5.7496 days (2020-May-17.330559 to 2020-May-23.080131). Diameter approximately 0.007 km. from weighted mean H=28.51.
2020 KSNEODyS22152055-2118442.5e-05-5.18-5.460NEODyS: "Based on 97 optical observations (of which 2 are rejected as outliers) from 2020-05-16.493 to 2020-05-25.323."
JPL Sentry19002067-2119174.9632412e-05-4.89-5.020JPL: Computed at 07:17 today Pacific time based on 97 observations spanning 8.8302 days (2020-May-16.491732 to 2020-May-25.32192). Diameter approximately 0.024 km. from weighted mean H=25.75.

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 25 May '20

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

2358Noted that JPL Sentry has posted 2020 KJ4 as an impact risk - see above
2330Grabbed MPEC 2020-K169 - 2020 KL4 - see above
Grabbed MPEC 2020-K170 - 2020 KM4 - see above
2300Grabbed MPEC 2020-K167 - 2020 JR3 - see above
Grabbed MPEC 2020-K168 - 2020 KK4 - see above
2215Noted that NEODyS has updated its 2020 KB3 risk assessment - see above
Noted that NEODyS has updated its 2020 KD1 risk assessment - see above
Noted that NEODyS has updated its 2020 KN2 risk assessment - see above
Noted that NEODyS has updated its 2020 KO3 risk assessment - see above
Noted that NEODyS has updated its 2020 KS risk assessment - see above
Grabbed MPEC 2020-K165 - A/2020 H9 - see above
Grabbed MPEC 2020-K166 - 2020 KJ4 - see above
1900Noted that JPL Sentry has updated its 2020 KB3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KD1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KD3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KN2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KO3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KS risk assessment - see above
Noted that JPL Sentry has updated its 2020 KU risk assessment - see above
Noted that JPL Sentry has removed 2020 KU3 as an impact risk - see above
Grabbed MPEC 2020-K163 - Daily Orbit Update - see above
Grabbed MPEC 2020-K164 - 2020 KG4 - see above
0500Grabbed MPEC 2020-K160 - 2020 JQ3 - see above
Grabbed MPEC 2020-K161 - 1998 VP - see above
Grabbed MPEC 2020-K162 - Comet C/2020 K4 (Panstarrs) - see above
0410Grabbed MPEC 2020-K156 - 2020 KD4 - see above
Grabbed MPEC 2020-K157 - 2020 KE4 - see above
Grabbed MPEC 2020-K158 - 2020 KF4 - see above
Grabbed MPEC 2020-K159 - Comet C/2020 K3 (Leonard) - see above