Contents  on 29 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 29 May '20

The MPC's NEO Confirmation Page has 66 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 66 objects listed. Of these, 41 were "one nighters." So far The Tracking News has counted a total of 78 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 29 May '20

Minor Planet Electronic Circulars

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


MPEC 2020-K219 - "23:02 UT" - 2020 KK6


MPEC 2020-K218 - "21:44 UT" - 2018 GZ3


MPEC 2020-K217 - "13:44 UT" - 2020 KG6


<< DOU on 29 May '20 >>  MPEC 2020-K216 - "12:06 UT" - Daily Orbit Update


MPEC 2020-K215 - "10:51 UT" - 2020 KF6


MPEC 2020-K214 - "08:13 UT" - 2020 KD6


MPEC 2020-K213 - "07:25 UT" - 2020 KC6


MPEC 2020-K212 - "07:01 UT" - 2020 HC11

Observers  on 29 May '20

A total of 34 observers appear in today's MPECs.

CodeObserver / observatory
U71AHS Obs., 5 in MPEC 2020-K216 -- 2013 XA22, 85184, 184990, 137199, 136874
T05ATLAS Haleakala in Hawaii, 18 in MPEC 2020-K216 -- 2020 KN2, 2019 UO9, 68348, 54401, 438908, 428086, 420302, 36183, 349063, 19764, 192563, 169675, 136923, 8014, 6050, 4954, 4179, 1685
T08ATLAS Mauna Loa in Hawaii, 10 in MPEC 2020-K216 -- 2020 KV5, 86667, 425450, 35107, 159929, 145656, 138847, 137170, 5836, 2368
160Castelmartini Obs. in Italy, 3 in MPEC 2020-K216 -- 159929, 138847, 1627
703Catalina Sky Survey (CSS) in Arizona, 23 in MPEC 2020-K216 -- 2020 KD2, 2020 FW3, 2011 JX1, 86667, 85184, 68350, 54686, 524530, 511523, 436030, 425450, 35107, 333555, 241596, 159929, 159928, 159608, 154278, 138847, 137170, 115052, 8566, 4055
Z99Clixby Obs. in England, 3 in MPEC 2020-K216 -- 2020 KV5, 2020 KP3, 2020 KC5
734Farpoint Obs. in Kansas, 4 in MPEC 2020-K216 -- 2020 KQ1, 2020 JU1, 2010 JK33, 2010 EC135
K83Forti Obs., 2 in MPEC 2020-K216 -- 2017 ME, 2013 XA22
157Frasso Sabino Obs. in Italy, 1 in MPEC 2020-K216 -- 2020 KV5
E89Geyserland Obs. in New Zealand, 3 in MPEC 2020-K216 -- 99935, 54401, 144411
J95Great Shefford Obs. in England, 2 in MPEC 2020-K216 -- 2020 KN2, 2020 KC5
A17Guidestar Obs. in Germany, 4 in MPEC 2020-K216 -- 2020 KP3, 2020 KD4, 2011 JX1, 363617
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-K216 -- 2020 BJ4
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-K216 -- 137199
Z43Landehen Obs., 1 in MPEC 2020-K216 -- 184990
130Lumezzane Obs. in Italy, 10 in MPEC 2020-K216 -- 86667, 85628, 85184, 68350, 68278, 436030, 333555, 184990, 159929, 138847
568^R. Wainscoat on Mauna Kea in Hawaii, 3 in MPECs 2020-K214, 2020-K217 & 2020-K219 -- 2020 KK6, 2020 KG6, 2020 KD6
V01Mountainville Obs. in Utah, 1 in MPEC 2020-K216 -- 2013 XA22
474Mt. John Obs. in New Zealand, 21 in MPECs 2020-K215, 2020-K216, 2020-K217 & 2020-K219 -- 2020 KZ2, 2020 KY4, 2020 KT4, 2020 KQ4, 2020 KQ, 2020 KM1, 2020 KL, 2020 KK6, 2020 KK1, 2020 KG6, 2020 KF6, 2020 KF, 2020 KB, 2020 KA6, 2020 JV, 2020 JU2, 2020 HX5, 2020 HT2, 2020 HF1, 2020 GF3, 2016 QU1
U83Mt. Laguna Obs., 2 in MPEC 2020-K216 -- 89830, 4450
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2020-K212, 2020-K215 & 2020-K216 -- 2020 KF6, 2020 HC11, 2008 LW16, 2003 MS2, 436324, 208565
Z80Northolt Branch Obs. in England, 1 in MPEC 2020-K216 -- 2020 KV
F51Pan-STARRS 1 (PS1) in Hawaii, 23 in MPECs 2020-K212, 2020-K213, 2020-K214, 2020-K216, 2020-K217, 2020-K218 & 2020-K219 -- 2020 KY3, 2020 KY, 2020 KR4, 2020 KR1, 2020 KO1, 2020 KL3, 2020 KK6, 2020 KK4, 2020 KJ2, 2020 KG6, 2020 KD6, 2020 KC6, 2020 JP1, 2020 HF3, 2020 HC11, 2020 CJ1, 2018 GZ3, 90147, 85640, 345853, 238456, 141078, 136874
F51^program code "^" (28) via Pan-STARRS 1 in Hawaii, 1 in MPEC 2020-K214 -- 2020 KD6
F52Pan-STARRS 2 (PS2) in Hawaii, 10 in MPECs 2020-K212, 2020-K216 & 2020-K218 -- 2020 KG, 2020 HC11, 2018 GZ3, 2015 FO124, 2006 SS19, 505657, 498550, 368949, 242191, 218863
F52^program code "^" (28) via Pan-STARRS 2 in Hawaii, 1 in MPEC 2020-K214 -- 2020 KD6
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 5 in MPEC 2020-K216 -- 2020 KV5, 2020 KR4, 2020 KQ5, 2020 KP3, 2020 KP2
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-K219 -- 2020 KK6
C95SATINO-1 in France, 1 in MPEC 2020-K216 -- 5626
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-K219 -- 2020 KK6
I52Steward Obs. Mt. Lemmon Station in Arizona, 23 in MPECs 2020-K212, 2020-K213, 2020-K215, 2020-K216 & 2020-K219 -- 2020 KZ4, 2020 KW5, 2020 KT4, 2020 KS, 2020 KR5, 2020 KR4, 2020 KQ5, 2020 KQ, 2020 KO3, 2020 KN5, 2020 KN3, 2020 KN2, 2020 KK6, 2020 KK5, 2020 KJ5, 2020 KJ1, 2020 KF6, 2020 KC6, 2020 JX, 2020 JV, 2020 JU, 2020 HC11, 2020 BN5
A16Tentlingen Obs. in Switzerland, 3 in MPEC 2020-K216 -- 2010 EC135, 425450, 1917
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-K216 -- 2016 GQ2, 2016 CA193
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2020-K216 -- 2020 AN3
L01Visnjan Obs. in Croatia, 1 in MPEC 2020-K215 -- 2020 KF6
I41Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-K216 -- 86067, 477885, 4055
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 May '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 KC5JPL Sentry16302083-211260.00010827679-5.34-5.360JPL: Computed at 06:53 today Pacific time based on 29 observations spanning 2.6641 days (2020-May-26.365344 to 2020-May-29.029493). Diameter approximately 0.012 km. from weighted mean H=27.34.
2020 KR4JPL Sentry1630R E M O V E DJPL: Risk listing removed at 1358 UTC today
2020 KN2JPL Sentry16302063-2119102.6119265e-05-5.36-5.380JPL: Computed at 06:52 today Pacific time based on 64 observations spanning 8.8810 days (2020-May-20.412007 to 2020-May-29.29305). Diameter approximately 0.017 km. from weighted mean H=26.46.
2020 KSJPL Sentry16302064-2118185.40640489e-05-4.86-5.010JPL: Computed at 06:44 today Pacific time based on 109 observations spanning 12.773 days (2020-May-16.491732 to 2020-May-29.26471). Diameter approximately 0.024 km. from weighted mean H=25.77.
2020 AN3JPL Sentry1630R E M O V E DJPL: Risk listing removed at 1332 UTC today
2019 KTJPL Sentry16302110-211036.804e-07-7.17-7.460JPL: Computed at 14:52 July 27th of 2019 Pacific time based on 62 observations spanning 1.2437 days (2019-May-26.15139 to 2019-May-27.395111). Diameter approximately 0.017 km. from weighted mean H=26.56.
2014 LJJPL Sentry16302055-2116401.484274e-05-6.87-7.790JPL: Computed at 20:38 April 7th of 2017 Pacific time based on 25 observations spanning 27.925 days (2014-Jun-02.27281 to 2014-Jun-30.1975). Diameter approximately 0.007 km. from weighted mean H=28.51.
2012 KP24JPL Sentry16302032-203213.361e-07-6.52-6.520JPL: Computed at 21:56 April 12th of 2017 Pacific time based on 139 observations spanning 5.0980 days (2012-May-23.33535 to 2012-May-28.43334). Diameter approximately 0.017 km. from weighted mean H=26.45.
2010 XB73JPL Sentry16302023-2110502.783641e-07-5.06-5.810JPL: 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.

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 29 May '20

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

2330Grabbed MPEC 2020-K219 - 2020 KK6 - see above
2212Grabbed MPEC 2020-K218 - 2018 GZ3 - see above
1630Noted that JPL Sentry has updated its 2010 XB73 risk assessment - see above
Noted that JPL Sentry has updated its 2012 KP24 risk assessment - see above
Noted that JPL Sentry has updated its 2014 LJ risk assessment - see above
Noted that JPL Sentry has updated its 2019 KT risk assessment - see above
Noted that JPL Sentry has removed 2020 AN3 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 KC5 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KN2 risk assessment - see above
Noted that JPL Sentry has removed 2020 KR4 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 KS risk assessment - see above
Grabbed MPEC 2020-K212 - 2020 HC11 - see above
Grabbed MPEC 2020-K213 - 2020 KC6 - see above
Grabbed MPEC 2020-K214 - 2020 KD6 - see above
Grabbed MPEC 2020-K215 - 2020 KF6 - see above
Grabbed MPEC 2020-K216 - Daily Orbit Update - see above
Grabbed MPEC 2020-K217 - 2020 KG6 - see above