Contents  on 23 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 23 April '20

The MPC's NEO Confirmation Page has 131 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 131 objects listed. Of these, 76 were "one nighters." So far The Tracking News has counted a total of 161 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 23 April '20

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been 22 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-H133 - "19:32 UT" - 2020 GN3


MPEC 2020-H132 - "19:24 UT" - 2020 HU4


MPEC 2020-H131 - "13:24 UT" - 2020 HT4


MPEC 2020-H130 - "13:19 UT" - 2020 HR4


<< DOU on 23 April '20 >>  MPEC 2020-H129 - "12:07 UT" - Daily Orbit Update


MPEC 2020-H128 - "11:49 UT" - 2011 HO4


MPEC 2020-H127 - "11:41 UT" - 2020 HQ4


MPEC 2020-H126 - "11:40 UT" - 2020 HP4


MPEC 2020-H125 - "10:30 UT" - 2020 HO4


MPEC 2020-H124 - "10:30 UT" - 2020 HN4


MPEC 2020-H123 - "10:29 UT" - 2020 HM4


MPEC 2020-H122 - "10:27 UT" - 2020 HL4


MPEC 2020-H121 - "10:25 UT" - 2020 HK4


MPEC 2020-H120 - "10:23 UT" - 2020 HJ4


MPEC 2020-H119 - "10:21 UT" - 2020 HH4


MPEC 2020-H118 - "10:18 UT" - 2020 HG4


MPEC 2020-H117 - "10:17 UT" - 2020 HF4


MPEC 2020-H116 - "10:14 UT" - 2020 HE4


MPEC 2020-H115 - "10:09 UT" - 2020 HD4


MPEC 2020-H114 - "01:35 UT" - 2020 HY3


MPEC 2020-H113 - "00:08 UT" - 2020 HX3


MPEC 2020-H112 - "00:05 UT" - 2020 HW3

Observers  on 23 April '20

A total of 56 observers appear in today's MPECs.

CodeObserver / observatory
R57Aorangi Iti Obs. in New Zealand, 2 in MPECs 2020-H126 & 2020-H129 -- 2020 HX3, 2020 HP4
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2020-H116, 2020-H119, 2020-H120, 2020-H121 & 2020-H129 -- 2020 HK4, 2020 HJ4, 2020 HH4, 2020 HE4, 2017 MX4, 2017 FE65, 162157
T05ATLAS Haleakala in Hawaii, 21 in MPECs 2020-H112, 2020-H113 & 2020-H129 -- 2020 HX3, 2020 HW3, 2020 HF1, 2020 GS, 2020 FM6, 2020 DM4, 2020 BO5, 2017 FE90, 2014 JO25, 2006 FH36, 2001 GS2, 99935, 349063, 19764, 169675, 142555, 141053, 11284, 4954, 3352, 1685
T08ATLAS Mauna Loa in Hawaii, 26 in MPECs 2020-H112 & 2020-H129 -- 2020 HW3, 2020 GF3, 2011 FZ2, 54686, 539940, 494880, 468910, 436324, 433992, 425450, 416231, 388945, 373428, 34613, 30825, 276274, 252793, 18172, 163692, 159608, 115052, 11405, 8566, 6047, 5626, 1627
X74Campo dos Amarais Obs., 1 in MPEC 2020-H129 -- 5660
703Catalina Sky Survey (CSS) in Arizona, 11 in MPEC 2020-H129 -- 2015 TX143, 2010 XD11, 90367, 89830, 86067, 500094, 483878, 413989, 333555, 9400, 1981
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 8 in MPECs 2020-H120, 2020-H126, 2020-H128, 2020-H129, 2020-H130, 2020-H131 & 2020-H132 -- 2020 HU4, 2020 HT4, 2020 HR4, 2020 HP4, 2020 HJ4, 2020 FT3, 2020 BP13, 2011 HO4
Z99Clixby Obs. in England, 2 in MPECs 2020-H126 & 2020-H129 -- 2020 HP4, 52768
L59Compustar Obs., 1 in MPEC 2020-H129 -- 52768
W845Lori Allen via DECam in Chile, 1 in MPEC 2020-H132 -- 2020 HU4
K87Dettelbach Vineyard Obs. in Germany, 9 in MPEC 2020-H129 -- 2020 HY, 2020 HW3, 2020 HU3, 2020 HT3, 2020 GF3, 2020 GD2, 2020 FO2, 2020 FA7, 2020 FA3
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPECs 2020-H117 & 2020-H129 -- 2020 HX3, 2020 HF4
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-H126 -- 2020 HP4
F65,program code "," (21) via Faulkes Telescope North in Hawaii, 1 in MPEC 2020-H129 -- 2019 UF10
J95Great Shefford Obs. in England, 5 in MPECs 2020-H113, 2020-H124, 2020-H126, 2020-H127 & 2020-H129 -- 2020 HX3, 2020 HU3, 2020 HQ4, 2020 HP4, 2020 HN4
A17Guidestar Obs. in Germany, 3 in MPECs 2020-H126 & 2020-H129 -- 2020 HP4, 2015 FP332, 2014 HO4
240Herrenberg Obs. in Germany, 4 in MPEC 2020-H129 -- 2019 XG1, 373428, 190166, 11066
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2020-H126 -- 2020 HP4
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-H129 -- 2020 FR5
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-H112 -- 2020 HW3
1861program code 1 via Kitab Obs., 1 in MPEC 2020-H129 -- 2020 FM6
246KLENOT in the Czech Republic, 6 in MPECs 2020-H112, 2020-H113, 2020-H124, 2020-H126 & 2020-H129 -- 2020 HX3, 2020 HW3, 2020 HU2, 2020 HP4, 2020 HN4, 2020 GY2
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-H129 -- 52768
Z43Landehen Obs., 1 in MPEC 2020-H129 -- 52768
K38M57 Obs. in Italy, 1 in MPEC 2020-H129 -- 2020 HX3
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2020-H129 -- 144411
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2020-H129 -- 2020 FA3
G96Mt. Lemmon Survey (MLS) in Arizona, 40 in MPECs 2020-H117, 2020-H118, 2020-H124, 2020-H125, 2020-H126, 2020-H127, 2020-H129, 2020-H130 & 2020-H131 -- 2020 HT4, 2020 HR4, 2020 HQ4, 2020 HP4, 2020 HO4, 2020 HN4, 2020 HG4, 2020 HF4, 2020 HF3, 2020 HF2, 2020 HC2, 2020 FR6, 2020 EM, 2020 BA4, 2019 YG7, 2019 YD2, 2019 XG1, 2017 JK2, 2015 FT118, 2003 SJ154, 2002 SQ, 90075, 52768, 416584, 39796, 368664, 363067, 330659, 275714, 26760, 21277, 18172, 163694, 159635, 159533, 154029, 154020, 143527, 141670, 115052
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2020-H129 -- 2016 WE1
Z80Northolt Branch Obs. in England, 2 in MPECs 2020-H126 & 2020-H129 -- 2020 HP4, 413989
G34Oberfrauendorf Obs. in Germany, 2 in MPECs 2020-H112 & 2020-H126 -- 2020 HW3, 2020 HP4
F51Pan-STARRS 1 (PS1) in Hawaii, 67 in MPECs 2020-H113, 2020-H114, 2020-H115, 2020-H116, 2020-H117, 2020-H119, 2020-H120, 2020-H121, 2020-H122, 2020-H123, 2020-H124, 2020-H128, 2020-H129, 2020-H130, 2020-H132 & 2020-H133 -- 2020 HY3, 2020 HX3, 2020 HU4, 2020 HU2, 2020 HU, 2020 HR4, 2020 HR, 2020 HO2, 2020 HN4, 2020 HN1, 2020 HN, 2020 HM4, 2020 HM2, 2020 HL4, 2020 HL, 2020 HK4, 2020 HJ4, 2020 HJ1, 2020 HH4, 2020 HF4, 2020 HE4, 2020 HE, 2020 HD4, 2020 GS, 2020 GN3, 2020 GK3, 2020 FF6, 2020 FF5, 2020 BR16, 2020 AZ2, 2019 XL1, 2019 TF2, 2018 KL2, 2015 HB10, 2012 QE50, 2011 OV4, 2011 HO4, 2010 EJ43, 2007 HX82, 2006 PY17, 2004 UR1, 2003 JN14, 2000 LK, 68063, 519354, 495323, 483471, 471240, 455591, 450185, 411655, 392704, 387505, 37655, 277142, 275976, 265196, 238456, 190166, 189973, 163679, 162157, 155341, 141053, 138524, 136618, 7358
F52Pan-STARRS 2 (PS2) in Hawaii, 17 in MPECs 2020-H114, 2020-H115, 2020-H116, 2020-H117, 2020-H118, 2020-H121, 2020-H125, 2020-H128, 2020-H129 & 2020-H133 -- 2020 HY3, 2020 HR1, 2020 HO4, 2020 HN2, 2020 HK4, 2020 HG4, 2020 HF4, 2020 HE4, 2020 HD4, 2020 GN3, 2012 TB259, 2011 HO4, 2010 FC6, 2006 XF2, 516155, 250614, 144861
K63Pascoli Obs. in Italy, 3 in MPECs 2020-H112, 2020-H113 & 2020-H126 -- 2020 HX3, 2020 HW3, 2020 HP4
A53Peschiera del Garda Obs. in Italy, 2 in MPEC 2020-H129 -- 2020 GD2, 2020 FA7
V93Pin Oak Obs., 3 in MPEC 2020-H129 -- 52768, 388945, 138847
D29Purple Mtn. Obs. Xuyi Station in China, 5 in MPEC 2020-H129 -- 2020 FE6, 2009 WZ7, 513125, 433992, 154229
L04ROASTERR-1 in Romania, 2 in MPECs 2020-H112 & 2020-H126 -- 2020 HW3, 2020 HP4
K61Rokycany Obs. in the Czech Republic, 3 in MPECs 2020-H112, 2020-H113 & 2020-H126 -- 2020 HX3, 2020 HW3, 2020 HP4
L40Saarbruecken Rastpfuhl Obs., 3 in MPEC 2020-H129 -- 2020 GD2, 52768, 137064
233San Vito Obs. in Italy, 1 in MPEC 2020-H129 -- 52768
C95SATINO-1 in France, 1 in MPEC 2020-H129 -- 2020 BK3
L38Schafsweide Obs., 1 in MPEC 2020-H129 -- 141525
204Schiaparelli Obs. in Italy, 26 in MPECs 2020-H126, 2020-H127 & 2020-H129 -- 2020 HT3, 2020 HQ4, 2020 HP4, 2020 GT2, 2020 GN2, 2020 GM2, 2020 GH2, 2020 GF2, 2020 GD2, 2020 GB2, 2020 GA3, 2020 GA2, 2020 FX5, 2020 FX3, 2017 KT4, 2015 TX143, 2014 HO4, 90367, 539940, 500094, 413989, 388838, 333555, 276732, 228368, 1627
033Schwarzschild Obs. in Germany, 15 in MPECs 2020-H115, 2020-H116, 2020-H117, 2020-H118, 2020-H119, 2020-H122, 2020-H124, 2020-H125, 2020-H126, 2020-H127, 2020-H129 & 2020-H131 -- 2020 HX3, 2020 HU2, 2020 HT4, 2020 HQ4, 2020 HQ3, 2020 HP4, 2020 HO4, 2020 HN4, 2020 HM1, 2020 HL4, 2020 HH4, 2020 HG4, 2020 HF4, 2020 HE4, 2020 HD4
I52Steward Obs. Mt. Lemmon Station in Arizona, 22 in MPECs 2020-H114, 2020-H115, 2020-H116, 2020-H118, 2020-H119, 2020-H122, 2020-H123, 2020-H124, 2020-H125, 2020-H126, 2020-H127, 2020-H129 & 2020-H133 -- 2020 HY3, 2020 HU1, 2020 HT1, 2020 HQ4, 2020 HP4, 2020 HP, 2020 HO4, 2020 HO1, 2020 HN4, 2020 HM4, 2020 HM, 2020 HL4, 2020 HJ2, 2020 HH4, 2020 HG4, 2020 HE4, 2020 HE2, 2020 HD4, 2020 GN3, 2020 GD, 2015 LK21, 2014 JS54
858Tebbutt Obs. in New Mexico, 2 in MPECs 2020-H126 & 2020-H127 -- 2020 HQ4, 2020 HP4
A16Tentlingen Obs. in Switzerland, 4 in MPEC 2020-H129 -- 2019 XG1, 388945, 115052, 8566
V261program code 1 via UAS-ISON Obs., 2 in MPEC 2020-H129 -- 52768, 163373
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-H129 -- 2019 GO, 2019 CT4
L01Visnjan Obs. in Croatia, 13 in MPECs 2020-H113, 2020-H114, 2020-H115, 2020-H116, 2020-H117, 2020-H119, 2020-H122, 2020-H124, 2020-H125, 2020-H126, 2020-H127, 2020-H129 & 2020-H131 -- 2020 HY3, 2020 HX3, 2020 HU2, 2020 HT4, 2020 HQ4, 2020 HP4, 2020 HO4, 2020 HN4, 2020 HL4, 2020 HH4, 2020 HF4, 2020 HE4, 2020 HD4
Z92West Park Obs. in England, 1 in MPEC 2020-H129 -- 52768
G33Wickede Obs. in Germany, 1 in MPEC 2020-H129 -- 52768
C51WISE in Earth polar orbit, 1 in MPEC 2020-H129 -- 349063
I15Wishing Star Obs. in Rhode Island, 4 in MPEC 2020-H129 -- 2020 FA7, 2015 TX143, 52768, 190166
Q78Woogaroo Obs., 1 in MPEC 2020-H129 -- 2020 DM4
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 23 April '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 HT4JPL Sentry17302035-210038.19117e-07-5.86-5.890JPL: Computed at 07:27 today Pacific time based on 17 observations spanning 1.6601 days (2020-Apr-21.26935 to 2020-Apr-22.929478). Diameter approximately 0.028 km. from weighted mean H=25.45.
NEODyS1730203526.76e-06-4.96-4.970NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2020-04-21.270 to 2020-04-22.930."
2020 HQ4JPL Sentry17302059-2120500.0001078615681-5.12-5.590JPL: Computed at 06:13 today Pacific time based on 39 observations spanning 1.0589 days (2020-Apr-22.14953 to 2020-Apr-23.20842). Diameter approximately 0.014 km. from weighted mean H=26.85.
NEODyS17302059-21181331.41e-04-5.03-5.570NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2020-04-22.150 to 2020-04-23.209."
2020 HM4JPL Sentry17302059-211648.256e-07-5.77-6.220JPL: Computed at 04:29 today Pacific time based on 12 observations spanning 2.8819 days (2020-Apr-20.3758 to 2020-Apr-23.25765). Diameter approximately 0.037 km. from weighted mean H=24.85.
NEODyS17302059-211651.38e-06-5.57-6.050NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2020-04-20.377 to 2020-04-23.258."
2020 HJ4JPL Sentry17302042-2118921.02647592e-05-2.67-3.630JPL: Computed at 04:34 today Pacific time based on 21 observations spanning 2.9472 days (2020-Apr-19.463036 to 2020-Apr-22.410214). Diameter approximately 0.315 km. from weighted mean H=20.16.
NEODyS17302042-2118977.79e-06-2.79-3.660NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2020-04-19.464 to 2020-04-22.411."
2020 HNJPL Sentry17302055-2119193.1914241e-05-6.34-6.540JPL: Computed at 08:05 today Pacific time based on 29 observations spanning 6.1373 days (2020-Apr-16.27939 to 2020-Apr-22.416691). Diameter approximately 0.006 km. from weighted mean H=28.58.
NEODyS17302055-2118512.31e-05-6.56-6.970NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2020-04-16.280 to 2020-04-22.417."
2020 HEJPL Sentry1730R E M O V E DJPL: Risk listing removed at 1433 UTC today
NEODyS1730R E M O V E D-
2020 GA3JPL Sentry17302054-2119174.502756e-06-5.45-5.810JPL: Computed at 07:57 today Pacific time based on 36 observations spanning 3.0309 days (2020-Apr-15.41021 to 2020-Apr-18.44112). Diameter approximately 0.033 km. from weighted mean H=25.05.
NEODyS17302054-2118161.13e-06-6.00-6.560NEODyS: "Based on 36 optical observations (of which 1 are rejected as outliers) from 2020-04-15.411 to 2020-04-18.442."
2020 GY2JPL Sentry17302093-211848.4217e-07-5.49-5.590JPL: Computed at 07:30 today Pacific time based on 60 observations spanning 7.5990 days (2020-Apr-15.34915 to 2020-Apr-22.94816). Diameter approximately 0.064 km. from weighted mean H=23.62.
NEODyS17302093-211755.34e-07-5.67-5.680NEODyS: "Based on 60 optical observations (of which 0 are rejected as outliers) from 2020-04-15.350 to 2020-04-22.949."
2020 FT3JPL Sentry17302089-2119133.691599e-05-3.78-3.800JPL: Computed at 07:33 today Pacific time based on 36 observations spanning 31.845 days (2020-Mar-22.30472 to 2020-Apr-23.14969). Diameter approximately 0.080 km. from weighted mean H=23.13.
NEODyS17302089-2118282.31e-05-4.00-4.050NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2020-03-22.306 to 2020-04-23.150."
2020 BK3JPL Sentry17302091-210566.149804e-05-5.33-5.340JPL: Computed at 07:35 today Pacific time based on 99 observations spanning 28.090 days (2020-Jan-22.395303 to 2020-Feb-19.485235). Diameter approximately 0.014 km. from weighted mean H=26.93.
NEODyS17302091-210575.98e-05-5.35-5.360NEODyS: "Based on 99 optical observations (of which 0 are rejected as outliers) from 2020-01-22.396 to 2020-02-19.486."

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 23 April '20

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

2033Grabbed MPEC 2020-H133 - 2020 GN3 - see above
1927Grabbed MPEC 2020-H132 - 2020 HU4 - see above
1730Noted that JPL Sentry has updated its 2020 BK3 risk assessment - see above
Noted that NEODyS has updated its 2020 BK3 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 GA3 risk assessment - see above
Noted that NEODyS has updated its 2020 GA3 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 removed 2020 HE as an impact risk - see above
Noted that NEODyS has removed 2020 HE as an impact risk - see above
Noted that JPL Sentry has posted 2020 HJ4 as an impact risk - see above
Noted that NEODyS has posted 2020 HJ4 as an impact risk - see above
Noted that JPL Sentry has posted 2020 HM4 as an impact risk - see above
Noted that NEODyS has posted 2020 HM4 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 HN risk assessment - see above
Noted that NEODyS has updated its 2020 HN risk assessment - see above
Noted that JPL Sentry has posted 2020 HQ4 as an impact risk - see above
Noted that NEODyS has posted 2020 HQ4 as an impact risk - see above
Noted that JPL Sentry has posted 2020 HT4 as an impact risk - see above
Noted that NEODyS has posted 2020 HT4 as an impact risk - see above
Grabbed MPEC 2020-H115 - 2020 HD4 - see above
Grabbed MPEC 2020-H116 - 2020 HE4 - see above
Grabbed MPEC 2020-H117 - 2020 HF4 - see above
Grabbed MPEC 2020-H118 - 2020 HG4 - see above
Grabbed MPEC 2020-H119 - 2020 HH4 - see above
Grabbed MPEC 2020-H120 - 2020 HJ4 - see above
Grabbed MPEC 2020-H121 - 2020 HK4 - see above
Grabbed MPEC 2020-H122 - 2020 HL4 - see above
Grabbed MPEC 2020-H123 - 2020 HM4 - see above
Grabbed MPEC 2020-H124 - 2020 HN4 - see above
Grabbed MPEC 2020-H125 - 2020 HO4 - see above
Grabbed MPEC 2020-H126 - 2020 HP4 - see above
Grabbed MPEC 2020-H127 - 2020 HQ4 - see above
Grabbed MPEC 2020-H128 - 2011 HO4 - see above
Grabbed MPEC 2020-H129 - Daily Orbit Update - see above
Grabbed MPEC 2020-H130 - 2020 HR4 - see above
Grabbed MPEC 2020-H131 - 2020 HT4 - see above
0142Grabbed MPEC 2020-H114 - 2020 HY3 - see above
0009Grabbed MPEC 2020-H112 - 2020 HW3 - see above
Grabbed MPEC 2020-H113 - 2020 HX3 - see above