Contents  on 25 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 25 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 127 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 April '20

Minor Planet Electronic Circulars

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


MPEC 2020-H166 - "15:26 UT" - 2018 WX1


MPEC 2020-H165 - "15:26 UT" - 2017 KY34


MPEC 2020-H164 - "15:25 UT" - 2014 LQ26


<< DOU on 25 April '20 >>  MPEC 2020-H163 - "12:09 UT" - Daily Orbit Update


MPEC 2020-H162 - "10:58 UT" - 2020 HY5


MPEC 2020-H161 - "10:55 UT" - 2020 HX5


MPEC 2020-H160 - "10:53 UT" - 2020 HW5


MPEC 2020-H159 - "10:46 UT" - 2020 HU5


MPEC 2020-H158 - "10:36 UT" - 2020 HV5


MPEC 2020-H157 - "10:29 UT" - 2020 HT5


MPEC 2020-H156 - "10:27 UT" - 2020 HS5

Observers  on 25 April '20

A total of 48 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2020-H156 & 2020-H163 -- 2020 HS5, 2020 FN2, 2020 CJ1, 2020 BY12, 2019 TF2, 483432, 344133, 162157
T08ATLAS Mauna Loa in Hawaii, 4 in MPEC 2020-H163 -- 2014 JO25, 99935, 4954, 1685
L54Berthelot Obs., 1 in MPEC 2020-H163 -- 539940
160Castelmartini Obs. in Italy, 12 in MPEC 2020-H163 -- 2020 HW3, 2019 XG1, 85628, 539940, 52768, 433992, 388945, 388838, 318050, 190166, 138847, 115052
703Catalina Sky Survey (CSS) in Arizona, 41 in MPECs 2020-H159 & 2020-H163 -- 2020 HY, 2020 HU5, 2020 HT2, 2020 HF5, 2020 FW3, 2020 FE6, 2019 XG1, 2016 AX147, 2013 ON5, 2010 EC135, 1998 HN3, 99935, 90075, 86667, 85628, 68278, 66251, 52768, 513125, 492143, 448818, 433992, 388838, 368664, 34613, 26760, 210012, 192563, 190166, 18172, 163243, 162210, 154229, 138847, 137064, 136923, 136618, 115052, 5626, 4954, 1917
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 10 in MPECs 2020-H156, 2020-H157, 2020-H158, 2020-H160, 2020-H161 & 2020-H163 -- 2020 HX5, 2020 HX1, 2020 HW5, 2020 HV5, 2020 HU3, 2020 HT5, 2020 HT, 2020 HS5, 2020 HO2, 2020 HD1
G58Chabot Obs. in northern California, 2 in MPEC 2020-H163 -- 2009 KK, 2007 TJ19
958Dax Obs. in France, 1 in MPEC 2020-H159 -- 2020 HU5
W84%program code "%" (14) via DECam in Chile, 1 in MPEC 2020-H163 -- 2014 HG196
K87Dettelbach Vineyard Obs. in Germany, 10 in MPEC 2020-H163 -- 2020 HW3, 2020 HU5, 2020 HT3, 2020 GY2, 2020 GF3, 2020 GD2, 2020 FW3, 2020 FB6, 2020 FA7, 2020 FA3
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 10 in MPECs 2020-H157, 2020-H163, 2020-H164 & 2020-H165 -- 2020 HT5, 2020 HT4, 2020 HQ4, 2020 HO5, 2020 HL1, 2020 HB3, 2020 GY2, 2020 FT3, 2017 KY34, 2014 LQ26
W46Foxfire Village Obs., 2 in MPEC 2020-H163 -- 2020 GD2, 388945
K73Gravina Obs. in Italy, 1 in MPEC 2020-H163 -- 52768
J95Great Shefford Obs. in England, 5 in MPECs 2020-H159, 2020-H162 & 2020-H163 -- 2020 HY5, 2020 HW3, 2020 HU5, 2020 HO5, 2020 HF5
A17Guidestar Obs. in Germany, 6 in MPECs 2020-H159 & 2020-H163 -- 2020 HU5, 2002 VR85, 522684, 468910, 436030, 184990
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2020-H159 -- 2020 HU5
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-H163 -- 2020 HF1
C401program code 1 via Kuban State Univ. Obs. in Russia, 2 in MPEC 2020-H163 -- 52768, 388945
K22Les Barres Obs. in France, 1 in MPEC 2020-H163 -- 52768
130Lumezzane Obs. in Italy, 12 in MPEC 2020-H163 -- 2020 GF3, 2020 GD2, 2020 FA7, 2019 XG1, 2015 TX143, 2009 QC36, 52768, 436324, 388945, 26760, 8566, 5626
108Montelupo Obs. in Italy, 1 in MPEC 2020-H163 -- 52768
G96Mt. Lemmon Survey (MLS) in Arizona, 22 in MPECs 2020-H162 & 2020-H163 -- 2020 HY5, 2020 HL1, 2020 HB5, 2020 GS, 2016 GT220, 2015 HB10, 2011 WC, 2002 JQ100, 99935, 499582, 463257, 339714, 275976, 189973, 16064, 159857, 159686, 141053, 137911, 11284, 9950, 4954
Z80Northolt Branch Obs. in England, 1 in MPEC 2020-H159 -- 2020 HU5
C23Olmen Obs. in Belgium, 1 in MPEC 2020-H163 -- 52768
557Ondrejov Obs. in the Czech Republic, 4 in MPEC 2020-H163 -- 85628, 539940, 388945, 137064
F51Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2020-H156, 2020-H157, 2020-H158, 2020-H161 & 2020-H163 -- 2020 HX5, 2020 HV5, 2020 HT5, 2020 HS5, 498066
F52Pan-STARRS 2 (PS2) in Hawaii, 2 in MPECs 2020-H159 & 2020-H160 -- 2020 HW5, 2020 HU5
K63Pascoli Obs. in Italy, 1 in MPEC 2020-H159 -- 2020 HU5
D29Purple Mtn. Obs. Xuyi Station in China, 11 in MPEC 2020-H163 -- 2004 FF29, 2000 HO40, 99935, 448818, 388838, 36183, 192563, 142555, 141053, 11066, 6050
L04ROASTERR-1 in Romania, 1 in MPEC 2020-H159 -- 2020 HU5
L40Saarbruecken Rastpfuhl Obs., 1 in MPEC 2020-H163 -- 52768
233San Vito Obs. in Italy, 1 in MPEC 2020-H163 -- 52768
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-H163 -- 2020 HT3
C95SATINO-1 in France, 1 in MPEC 2020-H163 -- 2020 BG6
L38Schafsweide Obs., 1 in MPEC 2020-H163 -- 136618
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-H159 -- 2020 HU5
033Schwarzschild Obs. in Germany, 9 in MPECs 2020-H156, 2020-H159, 2020-H160, 2020-H162 & 2020-H163 -- 2020 HY5, 2020 HW5, 2020 HW3, 2020 HU5, 2020 HS5, 2020 HQ3, 2020 HK3, 2020 HF5, 2020 GY2
Y00SONEAR in Brazil, 2 in MPEC 2020-H163 -- 2014 JO25, 86667
587Sormano Obs. in Italy, 1 in MPEC 2020-H159 -- 2020 HU5
I52Steward Obs. Mt. Lemmon Station in Arizona, 34 in MPECs 2020-H157, 2020-H159, 2020-H162 & 2020-H163 -- 2020 HZ4, 2020 HY5, 2020 HY3, 2020 HY1, 2020 HX2, 2020 HX1, 2020 HW3, 2020 HV2, 2020 HU5, 2020 HU3, 2020 HT5, 2020 HT4, 2020 HT3, 2020 HS1, 2020 HR3, 2020 HR1, 2020 HQ4, 2020 HP2, 2020 HO2, 2020 HM4, 2020 HL3, 2020 HL1, 2020 HK3, 2020 HJ3, 2020 HH4, 2020 HH2, 2020 HG2, 2020 HE3, 2020 HC1, 2020 HB3, 2020 GY2, 2020 GS2, 2020 GR2, 2020 GF3
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 2 in MPECs 2020-H156 & 2020-H157 -- 2020 HT5, 2020 HS5
858Tebbutt Obs. in New Mexico, 2 in MPECs 2020-H159 & 2020-H162 -- 2020 HY5, 2020 HU5
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-H166 -- 2018 WX1
L01Visnjan Obs. in Croatia, 2 in MPECs 2020-H157 & 2020-H158 -- 2020 HV5, 2020 HT5
Z92West Park Obs. in England, 1 in MPEC 2020-H163 -- 52768
C51WISE in Earth polar orbit, 2 in MPEC 2020-H163 -- 349063, 1685
Q78Woogaroo Obs., 1 in MPEC 2020-H163 -- 2010 JJ3
I41Zwicky Transient Facility (ZTF) in southern California, 8 in MPEC 2020-H163 -- 52762, 418265, 388838, 333555, 318050, 111253, 9400, 3103
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 April '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2303 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 Sentry16002105-210518.439e-09-7.88-7.880JPL: Computed at 07:29 today Pacific time based on 38 observations spanning 8.8748 days (2020-Apr-16.444934 to 2020-Apr-25.31978). Diameter approximately 0.047 km. from weighted mean H=24.29.
NEODyS16002105-211321.89e-09-8.55-8.580NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2020-04-16.446 to 2020-04-25.321."
2020 HT4JPL Sentry1600R E M O V E DJPL: Risk listing removed at 1451 UTC today
NEODyS1600R E M O V E D-
2020 HQ4JPL Sentry16002052-2120420.000124333547-5.08-5.610JPL: Computed at 07:43 today Pacific time based on 53 observations spanning 2.9825 days (2020-Apr-22.14953 to 2020-Apr-25.13204). Diameter approximately 0.014 km. from weighted mean H=26.85.
NEODyS16002051-21181611.37e-04-5.06-5.660NEODyS: "Based on 53 optical observations (of which 1 are rejected as outliers) from 2020-04-22.150 to 2020-04-25.133."
2020 HM4JPL Sentry16002061-206111.882e-07-6.29-6.290JPL: Computed at 07:30 today Pacific time based on 18 observations spanning 4.7844 days (2020-Apr-20.3758 to 2020-Apr-25.16021). Diameter approximately 0.038 km. from weighted mean H=24.73.
NEODyS1600206132.53e-07-6.18-6.250NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2020-04-20.377 to 2020-04-25.161."
2020 HK3JPL Sentry1600R E M O V E DJPL: Risk listing removed at 1433 UTC today
NEODyS1600207314.58e-09-7.64-7.640NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2020-04-19.547 to 2020-04-25.250."
2020 HB3JPL Sentry16002105-211994.6167e-06-5.69-6.050JPL: Computed at 07:57 today Pacific time based on 43 observations spanning 5.8197 days (2020-Apr-19.549093 to 2020-Apr-25.36884). Diameter approximately 0.032 km. from weighted mean H=25.12.
NEODyS16002105-2118131.69e-06-6.15-6.250NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2020-04-19.550 to 2020-04-25.370."
2020 HL1JPL Sentry16002055-206632.6819e-05-4.63-4.730JPL: Computed at 07:48 today Pacific time based on 34 observations spanning 8.9905 days (2020-Apr-16.27939 to 2020-Apr-25.26989). Diameter approximately 0.030 km. from weighted mean H=25.24.
NEODyS16002055-206631.64e-05-4.88-5.070NEODyS: "Based on 34 optical observations (of which 1 are rejected as outliers) from 2020-04-16.280 to 2020-04-25.271."
2020 GY2JPL Sentry16002093-209311.921e-06-5.10-5.100JPL: Computed at 07:51 today Pacific time based on 81 observations spanning 9.9624 days (2020-Apr-15.34915 to 2020-Apr-25.31155). Diameter approximately 0.064 km. from weighted mean H=23.63.
NEODyS16002089-211243.46e-06-4.87-4.880NEODyS: "Based on 81 optical observations (of which 0 are rejected as outliers) from 2020-04-15.350 to 2020-04-25.312."
2020 FT3JPL Sentry16002089-2119134.222413e-05-3.72-3.750JPL: Computed at 07:33 today Pacific time based on 39 observations spanning 33.606 days (2020-Mar-22.30472 to 2020-Apr-24.910448). Diameter approximately 0.080 km. from weighted mean H=23.13.
NEODyS16002089-2118332.71e-05-3.93-3.980NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2020-03-22.306 to 2020-04-24.911."
2017 UM52JPL Sentry16002039-21171462.73290194e-05-6.88-7.550JPL: Computed at 10:00 Dec. 15th of 2017 Pacific time based on 8 observations spanning .16673 days (2017-Oct-27.32913 to 2017-Oct-27.49586). Diameter approximately 0.004 km. from weighted mean H=29.49.

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 April '20

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

1600Noted that JPL Sentry has updated its 2017 UM52 risk assessment - see above
Noted that JPL Sentry has updated its 2020 FT3 risk assessment - see above
Noted that NEODyS has updated its 2020 FT3 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 removed 2020 HK3 as an impact risk - see above
Noted that NEODyS has updated its 2020 HK3 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 removed 2020 HT4 as an impact risk - see above
Noted that NEODyS has removed 2020 HT4 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 HZ4 risk assessment - see above
Noted that NEODyS has updated its 2020 HZ4 risk assessment - see above
Grabbed MPEC 2020-H156 - 2020 HS5 - see above
Grabbed MPEC 2020-H157 - 2020 HT5 - see above
Grabbed MPEC 2020-H158 - 2020 HV5 - see above
Grabbed MPEC 2020-H159 - 2020 HU5 - see above
Grabbed MPEC 2020-H160 - 2020 HW5 - see above
Grabbed MPEC 2020-H161 - 2020 HX5 - see above
Grabbed MPEC 2020-H162 - 2020 HY5 - see above
Grabbed MPEC 2020-H163 - Daily Orbit Update - see above
Grabbed MPEC 2020-H164 - 2014 LQ26 - see above
Grabbed MPEC 2020-H165 - 2017 KY34 - see above
Grabbed MPEC 2020-H166 - 2018 WX1 - see above