Contents  on 24 April '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 April '20

The MPC's NEO Confirmation Page has 116 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 116 objects listed. Of these, 72 were "one nighters." So far The Tracking News has counted a total of 143 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 April '20

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 22 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-H155 - "21:07 UT" - 2020 HP5


MPEC 2020-H154 - "21:04 UT" - 2020 HO5


MPEC 2020-H153 - "21:02 UT" - 2020 HN5


MPEC 2020-H152 - "20:59 UT" - 2020 HM5


MPEC 2020-H151 - "18:23 UT" - 2020 HL5


MPEC 2020-H150 - "15:49 UT" - 2020 HK5


MPEC 2020-H149 - "15:45 UT" - 2020 HJ5


MPEC 2020-H148 - "15:43 UT" - 2020 HH5


MPEC 2020-H147 - "14:12 UT" - 2020 HG5


MPEC 2020-H146 - "14:11 UT" - 2020 HF5


MPEC 2020-H145 - "14:07 UT" - 2020 HE5


MPEC 2020-H144 - "14:06 UT" - 2020 HD5


MPEC 2020-H143 - "14:03 UT" - 2020 HC5


MPEC 2020-H142 - "13:59 UT" - 2010 JJ3


MPEC 2020-H141 - "13:51 UT" - 2020 HB5


MPEC 2020-H140 - "13:49 UT" - 2020 HA5


MPEC 2020-H139 - "13:45 UT" - 2017 KA3


<< DOU on 24 April '20 >>  MPEC 2020-H138 - "12:08 UT" - Daily Orbit Update


MPEC 2020-H137 - "11:57 UT" - 2020 HZ4


MPEC 2020-H136 - "02:03 UT" - 2020 HX4


MPEC 2020-H135 - "00:21 UT" - 2020 HW4


MPEC 2020-H134 - "00:19 UT" - 2020 HV4

Observers  on 24 April '20

A total of 60 observers appear in today's MPECs.

CodeObserver / observatory
U71AHS Obs., 2 in MPEC 2020-H138 -- 2020 GD2, 137064
A50Andrushivka Obs. in Ukraine, 1 in MPEC 2020-H146 -- 2020 HF5
R57Aorangi Iti Obs. in New Zealand, 1 in MPEC 2020-H142 -- 2010 JJ3
E23Arcadia Obs. in New South Wales, 2 in MPECs 2020-H139 & 2020-H142 -- 2017 KA3, 2010 JJ3
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2020-H138, 2020-H148 & 2020-H151 -- 2020 HW, 2020 HL5, 2020 HH5, 2020 GX2, 2020 GP1, 2020 GO2, 2020 BY12, 2019 GD20, 2018 KB1, 483432, 344133
T05ATLAS Haleakala in Hawaii, 7 in MPECs 2020-H138 & 2020-H142 -- 2020 GD2, 2010 JJ3, 86667, 66251, 52768, 36183, 175189
T08ATLAS Mauna Loa in Hawaii, 12 in MPECs 2020-H138 & 2020-H139 -- 2020 HT3, 2020 FA7, 2017 KA3, 2015 TX143, 86067, 506459, 418265, 35107, 136795, 9400, 3752, 1866
L54Berthelot Obs., 1 in MPEC 2020-H138 -- 2020 HW3
703Catalina Sky Survey (CSS) in Arizona, 29 in MPECs 2020-H134, 2020-H138, 2020-H146 & 2020-H152 -- 2020 HV4, 2020 HM5, 2020 HF5, 2020 GF3, 2020 FB6, 2020 FA3, 2009 QC36, 68350, 539940, 524530, 494880, 468910, 436324, 40267, 388945, 373428, 35107, 318050, 276732, 276274, 252793, 237551, 20255, 154993, 141525, 11405, 8566, 4581, 1864
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 7 in MPECs 2020-H138, 2020-H143, 2020-H144, 2020-H149, 2020-H150, 2020-H151 & 2020-H155 -- 2020 HP5, 2020 HL5, 2020 HK5, 2020 HJ5, 2020 HD5, 2020 HC5, 2020 FK5
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2020-H138 -- 2002 LX64
Z99Clixby Obs. in England, 1 in MPEC 2020-H139 -- 2017 KA3
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2020-H134 -- 2020 HV4
958Dax Obs. in France, 1 in MPEC 2020-H146 -- 2020 HF5
K87Dettelbach Vineyard Obs. in Germany, 14 in MPECs 2020-H138, 2020-H139 & 2020-H146 -- 2020 HY, 2020 HW3, 2020 HV4, 2020 HT3, 2020 HF5, 2020 GJ2, 2020 GF3, 2020 GD2, 2020 FW3, 2020 FB6, 2020 FA7, 2020 FA3, 2017 KA3, 52768
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPECs 2020-H138 & 2020-H143 -- 2020 HM4, 2020 HL1, 2020 HC5
595Farra d'Isonzo Obs. in Italy, 5 in MPECs 2020-H138 & 2020-H142 -- 2020 HX3, 2010 JJ3, 52768, 388945, 136795
203GiaGa Obs. in Italy, 4 in MPECs 2020-H138, 2020-H139, 2020-H146 & 2020-H152 -- 2020 HM5, 2020 HF5, 2020 FA7, 2017 KA3
E94Gisborne Obs. in New Zealand, 1 in MPEC 2020-H142 -- 2010 JJ3
J95Great Shefford Obs. in England, 7 in MPECs 2020-H139, 2020-H140, 2020-H141, 2020-H143, 2020-H145, 2020-H146 & 2020-H155 -- 2020 HP5, 2020 HF5, 2020 HE5, 2020 HC5, 2020 HB5, 2020 HA5, 2017 KA3
A17Guidestar Obs. in Germany, 8 in MPECs 2020-H134, 2020-H138, 2020-H139, 2020-H140, 2020-H146 & 2020-H152 -- 2020 HW3, 2020 HW1, 2020 HV4, 2020 HM5, 2020 HF5, 2020 HA5, 2017 KT4, 2017 KA3
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-H142 -- 2010 JJ3
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-H138 -- 2020 GD2
K85Kelmis Obs., 1 in MPEC 2020-H138 -- 52768
246KLENOT in the Czech Republic, 15 in MPECs 2020-H134, 2020-H137, 2020-H138, 2020-H139, 2020-H140, 2020-H141, 2020-H144, 2020-H145, 2020-H146, 2020-H152, 2020-H153 & 2020-H154 -- 2020 HZ4, 2020 HX3, 2020 HV4, 2020 HU2, 2020 HQ4, 2020 HO5, 2020 HO1, 2020 HN5, 2020 HM5, 2020 HF5, 2020 HE5, 2020 HD5, 2020 HB5, 2020 HA5, 2017 KA3
C401program code 1 via Kuban State Univ. Obs. in Russia, 2 in MPEC 2020-H138 -- 52768, 388945
Z43Landehen Obs., 1 in MPEC 2020-H138 -- 2020 GD2
K22Les Barres Obs. in France, 1 in MPEC 2020-H138 -- 52768
K38M57 Obs. in Italy, 3 in MPECs 2020-H138, 2020-H139 & 2020-H146 -- 2020 HT3, 2020 HF5, 2017 KA3
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2020-H138 -- 54071
B67Mirasteilas Obs. in Switzerland, 4 in MPEC 2020-H138 -- 2020 GF3, 2015 TX143, 2010 XD11, 2006 GX2
108Montelupo Obs. in Italy, 1 in MPEC 2020-H146 -- 2020 HF5
G96Mt. Lemmon Survey (MLS) in Arizona, 46 in MPECs 2020-H136, 2020-H137, 2020-H138, 2020-H143, 2020-H144, 2020-H153, 2020-H154 & 2020-H155 -- 2020 HZ4, 2020 HY, 2020 HX4, 2020 HP5, 2020 HO5, 2020 HN5, 2020 HD5, 2020 HC5, 2020 GY2, 2020 GN3, 2020 GE3, 2020 GD1, 2020 GC3, 2020 FE6, 2020 BD14, 2018 GX4, 2017 OS18, 2017 MU7, 2016 WE1, 2016 LF51, 2015 SY2, 2013 ON5, 2012 QQ10, 2010 EC135, 2007 TJ19, 2000 WO148, 85628, 85490, 65674, 52768, 520585, 513125, 402267, 399325, 388838, 274138, 250620, 210012, 163243, 162210, 162063, 162039, 162038, 154229, 11311, 1917
K74Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-H139 -- 2017 KA3
Z80Northolt Branch Obs. in England, 3 in MPECs 2020-H138 & 2020-H146 -- 2020 HW3, 2020 HF5, 2020 FA7
G34Oberfrauendorf Obs. in Germany, 3 in MPEC 2020-H138 -- 2020 HX3, 2020 HW3, 2020 GD2
F51Pan-STARRS 1 (PS1) in Hawaii, 17 in MPECs 2020-H134, 2020-H135, 2020-H136, 2020-H138, 2020-H141, 2020-H145, 2020-H148, 2020-H150 & 2020-H151 -- 2020 HX4, 2020 HX3, 2020 HW4, 2020 HV4, 2020 HQ3, 2020 HL5, 2020 HK5, 2020 HH5, 2020 HE5, 2020 HB5, 2003 JN14, 498066, 494880, 277142, 159533, 141053, 1917
F52Pan-STARRS 2 (PS2) in Hawaii, 15 in MPECs 2020-H134, 2020-H135, 2020-H136, 2020-H137, 2020-H138, 2020-H140, 2020-H147, 2020-H149 & 2020-H150 -- 2020 HZ4, 2020 HX4, 2020 HW4, 2020 HV4, 2020 HK5, 2020 HJ5, 2020 HG5, 2020 HA5, 2020 GJ2, 2018 GX4, 2010 EC135, 524530, 436324, 368664, 210012
K63Pascoli Obs. in Italy, 4 in MPECs 2020-H140, 2020-H145, 2020-H146 & 2020-H152 -- 2020 HM5, 2020 HF5, 2020 HE5, 2020 HA5
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 7 in MPECs 2020-H138 & 2020-H139 -- 2017 KA3, 90403, 66391, 537342, 326777, 141525, 137170
D29Purple Mtn. Obs. Xuyi Station in China, 19 in MPEC 2020-H138 -- 2020 HY, 2020 HF2, 2020 GF3, 2020 FR6, 2020 BD14, 2015 FT118, 2010 EC135, 2003 UG22, 2002 SQ, 85628, 513125, 39796, 368664, 330659, 275714, 26760, 145656, 141495, 5751
L18QOS Obs., 2 in MPEC 2020-H138 -- 2020 HW3, 539940
L04ROASTERR-1 in Romania, 3 in MPECs 2020-H138 & 2020-H146 -- 2020 HX3, 2020 HF5, 2015 TX143
K61Rokycany Obs. in the Czech Republic, 1 in MPEC 2020-H139 -- 2017 KA3
L40Saarbruecken Rastpfuhl Obs., 1 in MPEC 2020-H138 -- 52768
C95SATINO-1 in France, 1 in MPEC 2020-H138 -- 2020 BA4
K96Savelli Obs., 1 in MPEC 2020-H138 -- 52768
L38Schafsweide Obs., 2 in MPEC 2020-H138 -- 141525, 136618
204Schiaparelli Obs. in Italy, 3 in MPECs 2020-H139, 2020-H142 & 2020-H146 -- 2020 HF5, 2017 KA3, 2010 JJ3
033Schwarzschild Obs. in Germany, 19 in MPECs 2020-H134, 2020-H135, 2020-H136, 2020-H137, 2020-H138, 2020-H139, 2020-H140, 2020-H141, 2020-H143, 2020-H144, 2020-H146, 2020-H147, 2020-H152, 2020-H153, 2020-H154 & 2020-H155 -- 2020 HZ4, 2020 HX4, 2020 HW4, 2020 HV4, 2020 HP5, 2020 HO5, 2020 HN5, 2020 HM5, 2020 HG5, 2020 HF5, 2020 HD5, 2020 HC5, 2020 HB5, 2020 HA5, 2020 GU1, 2020 GF2, 2020 GE1, 2020 GC1, 2017 KA3
I93St. Pardon de Conques Obs. in France, 13 in MPECs 2020-H134, 2020-H137, 2020-H138, 2020-H139, 2020-H140, 2020-H141, 2020-H143, 2020-H145, 2020-H146, 2020-H147, 2020-H152, 2020-H153 & 2020-H154 -- 2020 HZ4, 2020 HX4, 2020 HV4, 2020 HO5, 2020 HN5, 2020 HM5, 2020 HG5, 2020 HF5, 2020 HE5, 2020 HC5, 2020 HB5, 2020 HA5, 2017 KA3
I52Steward Obs. Mt. Lemmon Station in Arizona, 38 in MPECs 2020-H134, 2020-H135, 2020-H136, 2020-H137, 2020-H138, 2020-H139, 2020-H140, 2020-H141, 2020-H142, 2020-H143, 2020-H144, 2020-H145, 2020-H146, 2020-H147, 2020-H149, 2020-H152, 2020-H153, 2020-H154 & 2020-H155 -- 2020 HZ4, 2020 HY, 2020 HX4, 2020 HX3, 2020 HW4, 2020 HW3, 2020 HW1, 2020 HV4, 2020 HV1, 2020 HU1, 2020 HT3, 2020 HQ4, 2020 HQ3, 2020 HQ1, 2020 HP5, 2020 HO5, 2020 HO3, 2020 HN5, 2020 HN2, 2020 HM5, 2020 HM3, 2020 HJ5, 2020 HJ, 2020 HG5, 2020 HG3, 2020 HG2, 2020 HF5, 2020 HE5, 2020 HD5, 2020 HC5, 2020 HB5, 2020 HB3, 2020 HB2, 2020 HA5, 2020 GY2, 2020 EN, 2017 KA3, 2010 JJ3
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 5 in MPECs 2020-H135, 2020-H137, 2020-H139, 2020-H144 & 2020-H148 -- 2020 HZ4, 2020 HW4, 2020 HH5, 2020 HD5, 2017 KA3
858Tebbutt Obs. in New Mexico, 3 in MPECs 2020-H139, 2020-H140 & 2020-H141 -- 2020 HB5, 2020 HA5, 2017 KA3
A16Tentlingen Obs. in Switzerland, 5 in MPEC 2020-H138 -- 35107, 190166, 175189, 141495, 138847
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-H138 -- 2016 PN
L01Visnjan Obs. in Croatia, 19 in MPECs 2020-H134, 2020-H135, 2020-H136, 2020-H137, 2020-H138, 2020-H139, 2020-H140, 2020-H141, 2020-H142, 2020-H143, 2020-H144, 2020-H145, 2020-H146, 2020-H147, 2020-H148, 2020-H152, 2020-H153, 2020-H154 & 2020-H155 -- 2020 HZ4, 2020 HX4, 2020 HX3, 2020 HW4, 2020 HV4, 2020 HP5, 2020 HO5, 2020 HN5, 2020 HM5, 2020 HH5, 2020 HG5, 2020 HF5, 2020 HE5, 2020 HD5, 2020 HC5, 2020 HB5, 2020 HA5, 2017 KA3, 2010 JJ3
G23Vulpecula Obs., 1 in MPEC 2020-H138 -- 52768
Q78Woogaroo Obs., 3 in MPEC 2020-H138 -- 2020 FM6, 2020 DM4, 2017 ES2
I41Zwicky Transient Facility (ZTF) in southern California, 6 in MPEC 2020-H138 -- 2019 XG1, 494880, 483878, 388945, 373428, 35107
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 April '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 HZ4JPL Sentry16052105-210512.582e-08-7.41-7.410JPL: Computed at 05:57 today Pacific time based on 34 observations spanning 7.9648 days (2020-Apr-16.444934 to 2020-Apr-24.40969). Diameter approximately 0.046 km. from weighted mean H=24.32.
NEODyS16052105-211321.16e-08-7.78-7.80NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2020-04-16.446 to 2020-04-24.410."
2020 HQ4JPL Sentry16052052-2119440.000107379495-5.12-5.600JPL: Computed at 07:42 today Pacific time based on 46 observations spanning 2.0197 days (2020-Apr-22.14953 to 2020-Apr-24.1692). Diameter approximately 0.015 km. from weighted mean H=26.84.
NEODyS16052051-21171441.33e-04-5.05-5.640NEODyS: "Based on 46 optical observations (of which 1 are rejected as outliers) from 2020-04-22.150 to 2020-04-24.170."
2020 HM4JPL Sentry16052059-207241.71277e-07-6.37-6.490JPL: Computed at 07:30 today Pacific time based on 14 observations spanning 2.8819 days (2020-Apr-20.3758 to 2020-Apr-23.25765). Diameter approximately 0.037 km. from weighted mean H=24.81.
NEODyS16052059-207251.87e-07-6.34-6.460NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2020-04-20.377 to 2020-04-23.258."
2020 HB3JPL Sentry16052111-211875.9662e-06-5.56-5.900JPL: Computed at 07:52 today Pacific time based on 37 observations spanning 4.8931 days (2020-Apr-19.549093 to 2020-Apr-24.44219). Diameter approximately 0.033 km. from weighted mean H=25.08.
NEODyS16052105-2118215.12e-06-5.65-5.930NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2020-04-19.550 to 2020-04-24.443."
2020 HL1JPL Sentry16052055-206631.4348e-05-4.93-5.060JPL: Computed at 07:28 today Pacific time based on 24 observations spanning 6.8576 days (2020-Apr-16.27939 to 2020-Apr-23.136982). Diameter approximately 0.030 km. from weighted mean H=25.30.
NEODyS16052055-211041.65e-05-4.90-5.120NEODyS: "Based on 24 optical observations (of which 1 are rejected as outliers) from 2020-04-16.280 to 2020-04-23.138."
2020 GY2JPL Sentry16052093-211847.1947e-07-5.59-5.690JPL: Computed at 07:29 today Pacific time based on 68 observations spanning 9.0789 days (2020-Apr-15.34915 to 2020-Apr-24.42807). Diameter approximately 0.062 km. from weighted mean H=23.68.
NEODyS16052093-211843.85e-07-5.84-5.840NEODyS: "Based on 68 optical observations (of which 0 are rejected as outliers) from 2020-04-15.350 to 2020-04-24.429."
2017 UE52NEODyS16052022-2117479.97e-09-6.39-6.750NEODyS: "Based on 5 optical observations (of which 0 are rejected as outliers) from 2017-10-28.572 to 2017-10-30.358."

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 April '20

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

2130Grabbed MPEC 2020-H152 - 2020 HM5 - see above
Grabbed MPEC 2020-H153 - 2020 HN5 - see above
Grabbed MPEC 2020-H154 - 2020 HO5 - see above
Grabbed MPEC 2020-H155 - 2020 HP5 - see above
1830Grabbed MPEC 2020-H151 - 2020 HL5 - see above
1605Noted that NEODyS has updated its 2017 UE52 risk assessment - see above
Noted that JPL Sentry has updated its 2020 GY2 risk assessment - see above
Noted that NEODyS has updated its 2020 GY2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 HB3 risk assessment - see above
Noted that NEODyS has updated its 2020 HB3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 HL1 risk assessment - see above
Noted that NEODyS has updated its 2020 HL1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 HM4 risk assessment - see above
Noted that NEODyS has updated its 2020 HM4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 HQ4 risk assessment - see above
Noted that NEODyS has updated its 2020 HQ4 risk assessment - see above
Noted that JPL Sentry has posted 2020 HZ4 as an impact risk - see above
Noted that NEODyS has posted 2020 HZ4 as an impact risk - see above
Grabbed MPEC 2020-H137 - 2020 HZ4 - see above
Grabbed MPEC 2020-H138 - Daily Orbit Update - see above
Grabbed MPEC 2020-H139 - 2017 KA3 - see above
Grabbed MPEC 2020-H140 - 2020 HA5 - see above
Grabbed MPEC 2020-H141 - 2020 HB5 - see above
Grabbed MPEC 2020-H142 - 2010 JJ3 - see above
Grabbed MPEC 2020-H143 - 2020 HC5 - see above
Grabbed MPEC 2020-H144 - 2020 HD5 - see above
Grabbed MPEC 2020-H145 - 2020 HE5 - see above
Grabbed MPEC 2020-H146 - 2020 HF5 - see above
Grabbed MPEC 2020-H147 - 2020 HG5 - see above
Grabbed MPEC 2020-H148 - 2020 HH5 - see above
Grabbed MPEC 2020-H149 - 2020 HJ5 - see above
Grabbed MPEC 2020-H150 - 2020 HK5 - see above
0500Grabbed MPEC 2020-H134 - 2020 HV4 - see above
Grabbed MPEC 2020-H135 - 2020 HW4 - see above
0431Grabbed MPEC 2020-H136 - 2020 HX4 - see above