Contents  on 30 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 30 May '20

The MPC's NEO Confirmation Page has 59 listings

When last checked at 2301 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 59 objects listed. Of these, 37 were "one nighters." So far The Tracking News has counted a total of 75 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 30 May '20

Minor Planet Electronic Circulars

As of last check at 2301 UTC, there have been seven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-K226 - "15:41 UT" - 2020 KV6


<< DOU on 30 May '20 >>  MPEC 2020-K225 - "12:01 UT" - Daily Orbit Update


MPEC 2020-K224 - "11:53 UT" - 2020 KT6


MPEC 2020-K223 - "11:51 UT" - 2020 KS6


MPEC 2020-K222 - "11:49 UT" - 2020 KR6


MPEC 2020-K221 - "11:47 UT" - 2020 KQ6


MPEC 2020-K220 - "11:46 UT" - 2020 KP6

Observers  on 30 May '20

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2020-K220, 2020-K221, 2020-K223, 2020-K225 & 2020-K226 -- 2020 KV6, 2020 KS6, 2020 KQ6, 2020 KP6, 2020 JV1, 2020 HT3, 2020 BN2, 2006 XF2
T05ATLAS Haleakala in Hawaii, 38 in MPEC 2020-K225 -- 2020 KQ5, 2018 GX4, 2017 ME, 2016 FY14, 2016 AX147, 2013 XA22, 2006 UD63, 2004 LU3, 2000 KA, 85628, 68348, 66407, 66251, 54789, 54401, 513170, 495891, 495615, 494706, 438908, 396730, 354952, 349063, 318050, 218863, 186822, 175189, 162470, 136923, 136874, 106538, 8014, 7977, 7753, 6050, 5751, 2102, 1685
T08ATLAS Mauna Loa in Hawaii, 5 in MPEC 2020-K225 -- 2015 FP332, 184990, 137199, 106589, 105140
X74Campo dos Amarais Obs., 1 in MPEC 2020-K225 -- 420302
160Castelmartini Obs. in Italy, 12 in MPEC 2020-K225 -- 2017 ME, 2014 LW21, 2010 EC135, 2006 UD63, 85989, 68350, 66251, 498066, 333555, 190166, 4055, 1917
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2020-K225 -- 2006 SS19, 2102
Z99Clixby Obs. in England, 5 in MPECs 2020-K225 & 2020-K226 -- 2020 KV6, 2020 KN4, 2020 KD2, 2015 FP332, 2006 UD63
K87Dettelbach Vineyard Obs. in Germany, 5 in MPEC 2020-K225 -- 2020 KV5, 2020 KP3, 2020 KN4, 2020 KD2, 2020 FW3
734Farpoint Obs. in Kansas, 3 in MPECs 2020-K220, 2020-K223 & 2020-K226 -- 2020 KV6, 2020 KS6, 2020 KP6
J95Great Shefford Obs. in England, 4 in MPECs 2020-K223, 2020-K224, 2020-K225 & 2020-K226 -- 2020 KV6, 2020 KT6, 2020 KS6, 2020 KC5
A17Guidestar Obs. in Germany, 6 in MPECs 2020-K225 & 2020-K226 -- 2020 KV6, 2020 KV5, 2020 KN4, 513170, 162470, 105140
Z43Landehen Obs., 1 in MPEC 2020-K225 -- 2020 KP3
568^R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2020-K221 -- 2020 KQ6
213Montcabre Obs. in Spain, 1 in MPEC 2020-K225 -- 2007 VG
474Mt. John Obs. in New Zealand, 8 in MPECs 2020-K222 & 2020-K225 -- 2020 KW5, 2020 KR6, 2020 KF, 2020 JZ, 2020 JP1, 2020 JM1, 2020 HX5, 2020 HV9
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2020-K222, 2020-K223, 2020-K225 & 2020-K226 -- 2020 KV6, 2020 KS6, 2020 KR6, 231792
Z80Northolt Branch Obs. in England, 4 in MPEC 2020-K225 -- 2020 KN4, 2020 KC5, 2013 XA22, 85275
F51Pan-STARRS 1 (PS1) in Hawaii, 14 in MPECs 2020-K220, 2020-K221, 2020-K223, 2020-K224 & 2020-K225 -- 2020 KT6, 2020 KS6, 2020 KQ6, 2020 KP6, 2018 AX, 2012 EM8, 2007 HX82, 436324, 399325, 276274, 265196, 143637, 136874, 1917
F52Pan-STARRS 2 (PS2) in Hawaii, 13 in MPECs 2020-K221 & 2020-K225 -- 2020 KZ3, 2020 KQ6, 2015 FT118, 2010 GW62, 2006 KR1, 2004 MW2, 86067, 85184, 483878, 276274, 241662, 137199, 4257
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 15 in MPEC 2020-K225 -- 2020 FW3, 2020 BO5, 2017 ME, 2014 LW21, 2013 XA22, 2010 EC135, 2006 HB, 2004 LU3, 2002 VR85, 85184, 495615, 184990, 137199, 136874, 8014
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 4 in MPECs 2020-K223 & 2020-K225 -- 2020 KZ3, 2020 KS6, 2020 KO2, 2020 KC6
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2020-K223 & 2020-K226 -- 2020 KV6, 2020 KS6
H36Sandlot Obs. in Kansas, 4 in MPECs 2020-K223, 2020-K224 & 2020-K225 -- 2020 KT6, 2020 KS6, 2020 BN5, 2016 FY14
C95SATINO-1 in France, 1 in MPEC 2020-K225 -- 5646
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-K223 -- 2020 KS6
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2020-K223 & 2020-K226 -- 2020 KV6, 2020 KS6
I52Steward Obs. Mt. Lemmon Station in Arizona, 5 in MPECs 2020-K222, 2020-K223, 2020-K224, 2020-K225 & 2020-K226 -- 2020 KV6, 2020 KT6, 2020 KS6, 2020 KR6, 2020 BN5
A16Tentlingen Obs. in Switzerland, 4 in MPEC 2020-K225 -- 2010 EC135, 68350, 495615, 477885
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-K225 -- 2016 FZ14, 2016 EJ156
L01Visnjan Obs. in Croatia, 5 in MPECs 2020-K220, 2020-K223, 2020-K224, 2020-K225 & 2020-K226 -- 2020 KV6, 2020 KT6, 2020 KS6, 2020 KP6, 2006 SS19
C51WISE in Earth polar orbit, 5 in MPEC 2020-K225 -- 2020 HV1, 2014 LQ26, 99935, 190166, 159608
N88Xingming Obs. #3, 1 in MPEC 2020-K226 -- 2020 KV6
I41Zwicky Transient Facility (ZTF) in southern California, 11 in MPEC 2020-K225 -- 86067, 85628, 68350, 54686, 357058, 190166, 7977, 7088, 6050, 4947, 1917
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 May '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2302 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 KC5JPL Sentry17502083-210632.84104e-05-5.92-5.930JPL: Computed at 07:31 today Pacific time based on 41 observations spanning 3.6988 days (2020-May-26.365344 to 2020-May-30.064179). Diameter approximately 0.012 km. from weighted mean H=27.33.
NEODyS17502083-210761.08e-04-5.35-5.350NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2020-05-26.366 to 2020-05-29.030."
2020 KR4NEODyS1750R E M O V E D-
2020 KJ4NEODyS17502096-210649.49e-07-8.84-8.870NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2020-05-21.443 to 2020-05-28.024."
2020 KN3NEODyS1750210515.57e-09-5.87-5.870NEODyS: "Based on 33 optical observations (of which 2 are rejected as outliers) from 2020-05-18.556 to 2020-05-29.450."
2020 KN2NEODyS17502063-2117161.61e-05-5.58-5.60NEODyS: "Based on 65 optical observations (of which 1 are rejected as outliers) from 2020-05-20.413 to 2020-05-29.294."
2020 KSNEODyS17502055-2117312.79e-05-5.16-5.410NEODyS: "Based on 109 optical observations (of which 2 are rejected as outliers) from 2020-05-16.493 to 2020-05-29.266."
2020 HK3NEODyS1750R E M O V E D-
2015 KH158JPL Sentry17502043-2115186.10736e-08-7.65-8.000JPL: 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.
2010 XB73JPL Sentry17502023-2110502.783641e-07-5.05-5.810JPL: Computed at 20:52 April 7th of 2017 Pacific time based on 18 observations spanning 1.0847 days (2010-Dec-14.13028 to 2010-Dec-15.21496). Diameter approximately 0.110 km. from weighted mean H=22.50.
2008 LEJPL Sentry17502021-21161202.2709252e-06-5.69-6.080JPL: Computed at 08:29 April 13th of 2017 Pacific time based on 12 observations spanning .14395 days (2008-Jun-02.29414 to 2008-Jun-02.43809). Diameter approximately 0.022 km. from weighted mean H=25.96.

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 30 May '20

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

1750Noted that JPL Sentry has updated its 2008 LE risk assessment - see above
Noted that JPL Sentry has updated its 2010 XB73 risk assessment - see above
Noted that JPL Sentry has updated its 2015 KH158 risk assessment - see above
Noted that NEODyS has removed 2020 HK3 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 KC5 risk assessment - see above
Noted that NEODyS has updated its 2020 KC5 risk assessment - see above
Noted that NEODyS has updated its 2020 KJ4 risk assessment - see above
Noted that NEODyS has updated its 2020 KN2 risk assessment - see above
Noted that NEODyS has reposted 2020 KN3 as an impact risk - see above
Noted that NEODyS has removed 2020 KR4 as an impact risk - see above
Noted that NEODyS has updated its 2020 KS risk assessment - see above
Grabbed MPEC 2020-K220 - 2020 KP6 - see above
Grabbed MPEC 2020-K221 - 2020 KQ6 - see above
Grabbed MPEC 2020-K222 - 2020 KR6 - see above
Grabbed MPEC 2020-K223 - 2020 KS6 - see above
Grabbed MPEC 2020-K224 - 2020 KT6 - see above
Grabbed MPEC 2020-K225 - Daily Orbit Update - see above
Grabbed MPEC 2020-K226 - 2020 KV6 - see above