Contents  on 15 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 15 April '20

The MPC's NEO Confirmation Page has 31 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 31 objects listed. Of these, 22 were "one nighters." So far The Tracking News has counted a total of 42 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 15 April '20

Minor Planet Electronic Circulars

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


MPEC 2020-G111 - "12:54 UT" - 2003 UG22


<< DOU on 15 April '20 >>  MPEC 2020-G110 - "12:02 UT" - Daily Orbit Update


MPEC 2020-G109 - "08:56 UT" - 2020 GU2

Observers  on 15 April '20

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2020-G109 & 2020-G110 -- 2020 GU2, 2020 GM1, 2011 FZ2, 2001 GS2, 86667, 68350, 388945
T08ATLAS Mauna Loa in Hawaii, 20 in MPEC 2020-G110 -- 2020 GN2, 2019 XG1, 54686, 494880, 436324, 416231, 388945, 34613, 276732, 18172, 138846, 11405, 106589, 8566, 7088, 6047, 5626, 4581, 1864, 1627
160Castelmartini Obs. in Italy, 9 in MPEC 2020-G110 -- 2020 BP14, 52768, 40267, 374188, 36284, 30825, 276732, 11405, 106589
G58Chabot Obs. in northern California, 3 in MPEC 2020-G110 -- 2015 FF120, 2010 XD11, 2009 CA2
E89Geyserland Obs. in New Zealand, 1 in MPEC 2020-G110 -- 90075
E94Gisborne Obs. in New Zealand, 1 in MPEC 2020-G110 -- 2020 GS2
J95Great Shefford Obs. in England, 3 in MPECs 2020-G109 & 2020-G110 -- 2020 GU2, 2020 GN2, 2020 GH2
A17Guidestar Obs. in Germany, 7 in MPEC 2020-G110 -- 2017 ME, 2017 KT4, 2014 HO4, 2010 EC135, 2009 QC36, 2009 FY29, 2009 FU4
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-G110 -- 2020 EO
246KLENOT in the Czech Republic, 13 in MPECs 2020-G109 & 2020-G110 -- 2020 GU2, 2020 GS, 2020 GN2, 2020 GM2, 2020 GJ2, 2020 GH2, 2020 GB1, 2020 FW3, 2020 FV6, 2020 FO2, 2020 FM6, 2020 FB6, 2020 FA7
Z43Landehen Obs., 1 in MPEC 2020-G110 -- 9400
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2020-G110 -- 2020 FA3, 2010 XD11
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2020-G109 & 2020-G111 -- 2020 GU2, 2003 UG22
Z80Northolt Branch Obs. in England, 1 in MPEC 2020-G110 -- 163693
G34Oberfrauendorf Obs. in Germany, 2 in MPEC 2020-G110 -- 2020 GD2, 2020 DM4
C23Olmen Obs. in Belgium, 1 in MPEC 2020-G110 -- 52768
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPECs 2020-G110 & 2020-G111 -- 2003 UG22, 175189, 141495
D29Purple Mtn. Obs. Xuyi Station in China, 9 in MPEC 2020-G110 -- 2020 FM6, 2009 QC36, 2001 GS2, 85628, 413989, 363067, 20255, 154029, 5646
L04ROASTERR-1 in Romania, 1 in MPEC 2020-G110 -- 137064
K61Rokycany Obs. in the Czech Republic, 1 in MPEC 2020-G109 -- 2020 GU2
L40Saarbruecken Rastpfuhl Obs., 1 in MPEC 2020-G110 -- 52768
233San Vito Obs. in Italy, 1 in MPEC 2020-G110 -- 52768
H36Sandlot Obs. in Kansas, 2 in MPECs 2020-G109 & 2020-G111 -- 2020 GU2, 2003 UG22
C95SATINO-1 in France, 1 in MPEC 2020-G110 -- 2020 AT1
033Schwarzschild Obs. in Germany, 14 in MPECs 2020-G109 & 2020-G110 -- 2020 GX1, 2020 GU2, 2020 GT2, 2020 GS1, 2020 GR2, 2020 GQ, 2020 GO2, 2020 GN2, 2020 GM2, 2020 GJ2, 2020 GH2, 2020 GB2, 2020 FV6, 2020 FM6
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-G110 -- 2020 FO2
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-G109 -- 2020 GU2
I52Steward Obs. Mt. Lemmon Station in Arizona, 18 in MPECs 2020-G109, 2020-G110 & 2020-G111 -- 2020 GU2, 2020 GS1, 2020 GR2, 2020 GQ2, 2020 GO2, 2020 GN2, 2020 GM2, 2020 GH2, 2020 GD1, 2020 GB2, 2020 FX5, 2020 FW3, 2020 FU6, 2020 FT3, 2018 KL2, 2017 BE32, 2015 SY2, 2003 UG22
A16Tentlingen Obs. in Switzerland, 1 in MPEC 2020-G110 -- 115052
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-G110 -- 2018 SR2
L01Visnjan Obs. in Croatia, 1 in MPEC 2020-G109 -- 2020 GU2
Z92West Park Obs. in England, 1 in MPEC 2020-G110 -- 52768
I41Zwicky Transient Facility (ZTF) in southern California, 2 in MPEC 2020-G110 -- 2020 GN2, 2001 GS2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 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 GB1JPL Sentry17102049-2116182.555124e-05-5.49-5.620JPL: Computed at 06:49 today Pacific time based on 125 observations spanning 4.4348 days (2020-Apr-02.534924 to 2020-Apr-06.969728). Diameter approximately 0.014 km. from weighted mean H=26.92.
NEODyS17102049-2118287.52e-06-6.23-6.470NEODyS: "Based on 125 optical observations (of which 2 are rejected as outliers) from 2020-04-02.536 to 2020-04-06.971."
2020 FT3JPL Sentry17102089-211073.070677e-05-3.80-3.820JPL: Computed at 06:35 today Pacific time based on 32 observations spanning 23.865 days (2020-Mar-22.30472 to 2020-Apr-15.16924). Diameter approximately 0.084 km. from weighted mean H=23.02.
NEODyS17102089-2118224.17e-05-3.70-3.720NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2020-03-22.306 to 2020-04-15.170."

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 15 April '20

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

1710Noted 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 GB1 risk assessment - see above
Noted that NEODyS has updated its 2020 GB1 risk assessment - see above
Grabbed MPEC 2020-G109 - 2020 GU2 - see above
Grabbed MPEC 2020-G110 - Daily Orbit Update - see above
Grabbed MPEC 2020-G111 - 2003 UG22 - see above