Contents  on 11 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 11 April '20

The MPC's NEO Confirmation Page has 24 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 24 objects listed. Of these, fourteen were "one nighters." So far The Tracking News has counted a total of 30 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 11 April '20

Minor Planet Electronic Circulars

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


MPEC 2020-G89 - "22:25 UT" - 2020 GH2


MPEC 2020-G88 - "22:18 UT" - 2020 GG2


<< DOU on 11 April '20 >>  MPEC 2020-G87 - "12:01 UT" - Daily Orbit Update


MPEC 2020-G86 - "11:58 UT" - 2020 GF2


MPEC 2020-G85 - "02:02 UT" - 2020 GE2


MPEC 2020-G84 - "02:00 UT" - 2020 GD2

Observers  on 11 April '20

A total of 55 observers appear in today's MPECs.

CodeObserver / observatory
A50Andrushivka Obs. in Ukraine, 1 in MPEC 2020-G86 -- 2020 GF2
R57Aorangi Iti Obs. in New Zealand, 2 in MPECs 2020-G86 & 2020-G87 -- 2020 GF2, 2020 FO5
H21Astronomical Research Obs. Westfield in Illinois, 13 in MPECs 2020-G86 & 2020-G87 -- 2020 GM1, 2020 GF2, 2020 GE1, 2020 GD1, 2020 FX4, 2020 FO2, 2020 FA7, 2020 FA3, 2020 DM4, 2001 GS2, 68350, 388945, 373428
T05ATLAS Haleakala in Hawaii, 9 in MPEC 2020-G87 -- 2020 DM4, 2017 ES2, 315098, 190166, 163243, 142555, 138847, 11066, 1685
T08ATLAS Mauna Loa in Hawaii, 20 in MPECs 2020-G86 & 2020-G87 -- 2020 GF2, 2020 DM4, 2017 FE90, 2016 AX147, 2011 FZ2, 2001 GS2, 90075, 494880, 448818, 388838, 373428, 349928, 190166, 18172, 163243, 138847, 137064, 115052, 11066, 5626
C77Bernezzo Obs. in Italy, 2 in MPECs 2020-G84 & 2020-G86 -- 2020 GF2, 2020 GD2
160Castelmartini Obs. in Italy, 7 in MPECs 2020-G86 & 2020-G87 -- 2020 GF2, 90075, 52768, 40267, 30825, 18172, 163243
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2020-G84 & 2020-G87 -- 2020 GD2, 2015 FP332, 2010 XD11, 90367, 89830, 65690, 539940, 511523, 252793, 228368, 9400, 1981, 1866
K51Celado Obs. in Italy, 2 in MPECs 2020-G88 & 2020-G89 -- 2020 GH2, 2020 GG2
Z99Clixby Obs. in England, 2 in MPECs 2020-G84 & 2020-G86 -- 2020 GF2, 2020 GD2
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2020-G86 -- 2020 GF2
K87Dettelbach Vineyard Obs. in Germany, 5 in MPECs 2020-G86 & 2020-G87 -- 2020 GF2, 2020 GD2, 2020 GA2, 2020 FO2, 2020 FA3
I48El Catalejo Obs. in Argentina, 1 in MPEC 2020-G86 -- 2020 GF2
W46Foxfire Village Obs., 1 in MPEC 2020-G86 -- 2020 GF2
X31Galilei Obs., 1 in MPEC 2020-G86 -- 2020 GF2
E89Geyserland Obs. in New Zealand, 5 in MPEC 2020-G87 -- 99935, 36284, 190166, 138847, 11066
203GiaGa Obs. in Italy, 2 in MPECs 2020-G84 & 2020-G86 -- 2020 GF2, 2020 GD2
J95Great Shefford Obs. in England, 6 in MPECs 2020-G84, 2020-G85, 2020-G86, 2020-G87 & 2020-G88 -- 2020 GM1, 2020 GG2, 2020 GF2, 2020 GE2, 2020 GD2, 2020 GA2
A17Guidestar Obs. in Germany, 1 in MPEC 2020-G89 -- 2020 GH2
L28ISON Castelgrande Obs., 1 in MPEC 2020-G87 -- 2020 GA2
585Kiev Comet Station in Ukraine, 1 in MPEC 2020-G86 -- 2020 GF2
246KLENOT in the Czech Republic, 2 in MPECs 2020-G88 & 2020-G89 -- 2020 GH2, 2020 GG2
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-G87 -- 52768
Z43Landehen Obs., 2 in MPECs 2020-G86 & 2020-G87 -- 2020 GF2, 9400
K30Luscherz Obs. in Switzerland, 2 in MPECs 2020-G84 & 2020-G86 -- 2020 GF2, 2020 GD2
K38M57 Obs. in Italy, 2 in MPECs 2020-G84 & 2020-G86 -- 2020 GF2, 2020 GD2
108Montelupo Obs. in Italy, 4 in MPEC 2020-G87 -- 52768, 35107, 18172, 5626
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2020-G85, 2020-G88 & 2020-G89 -- 2020 GH2, 2020 GG2, 2020 GE2
Z80Northolt Branch Obs. in England, 5 in MPECs 2020-G84, 2020-G86 & 2020-G87 -- 2020 GF2, 2020 GF1, 2020 GD2, 2020 FW4, 52768
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-G86 -- 2020 GF2
F51Pan-STARRS 1 (PS1) in Hawaii, 7 in MPECs 2020-G84, 2020-G87 & 2020-G88 -- 2020 GG2, 2020 GD2, 90367, 482566, 39796, 277810, 152978
F52Pan-STARRS 2 (PS2) in Hawaii, 3 in MPECs 2020-G85, 2020-G86 & 2020-G87 -- 2020 GF2, 2020 GE2, 2019 SH6
K63Pascoli Obs. in Italy, 2 in MPECs 2020-G84 & 2020-G86 -- 2020 GF2, 2020 GD2
K19PASTIS Obs. in France, 2 in MPECs 2020-G84 & 2020-G86 -- 2020 GF2, 2020 GD2
B49Paus Obs. in Spain, 2 in MPECs 2020-G84 & 2020-G86 -- 2020 GF2, 2020 GD2
K80Platanus Obs., 1 in MPEC 2020-G87 -- 2020 GA2
L18QOS Obs., 2 in MPEC 2020-G87 -- 2020 GA2, 52768
L04ROASTERR-1 in Romania, 2 in MPECs 2020-G84 & 2020-G86 -- 2020 GF2, 2020 GD2
233San Vito Obs. in Italy, 2 in MPECs 2020-G86 & 2020-G87 -- 2020 GF2, 52768
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-G88 -- 2020 GG2
204Schiaparelli Obs. in Italy, 2 in MPECs 2020-G86 & 2020-G88 -- 2020 GG2, 2020 GF2
033Schwarzschild Obs. in Germany, 19 in MPECs 2020-G84, 2020-G85, 2020-G86, 2020-G87, 2020-G88 & 2020-G89 -- 2020 GY1, 2020 GX1, 2020 GU1, 2020 GS, 2020 GM1, 2020 GH2, 2020 GG2, 2020 GF2, 2020 GE2, 2020 GD2, 2020 GA2, 2020 FX3, 2020 FW6, 2020 FW4, 2020 FB6, 2017 UZ44, 2016 EE157, 2013 AO27, 2011 GD60
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-G87 -- 2020 FZ6
Y00SONEAR in Brazil, 1 in MPEC 2020-G87 -- 413989
L06Sormano2 Obs. in Italy, 1 in MPEC 2020-G87 -- 2020 GD2
L39Spica Obs., 3 in MPECs 2020-G84, 2020-G86 & 2020-G87 -- 2020 GF2, 2020 GD2, 52768
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-G86 -- 2020 GF2
I93St. Pardon de Conques Obs. in France, 5 in MPECs 2020-G84, 2020-G85, 2020-G86, 2020-G88 & 2020-G89 -- 2020 GH2, 2020 GG2, 2020 GF2, 2020 GE2, 2020 GD2
I52Steward Obs. Mt. Lemmon Station in Arizona, 26 in MPECs 2020-G84, 2020-G85, 2020-G87, 2020-G88 & 2020-G89 -- 2020 GU, 2020 GS1, 2020 GP, 2020 GH2, 2020 GG2, 2020 GG1, 2020 GE2, 2020 GE1, 2020 GD2, 2020 GA2, 2020 FX5, 2020 FX3, 2020 FW6, 2020 FV6, 2020 FV2, 2020 FR6, 2020 FF5, 2020 FE6, 2020 FB6, 2020 EM, 2020 DX, 2020 DL1, 2020 BG8, 2020 BA4, 2017 BE32, 2016 NV
858Tebbutt Obs. in New Mexico, 2 in MPECs 2020-G86 & 2020-G88 -- 2020 GG2, 2020 GF2
A16Tentlingen Obs. in Switzerland, 4 in MPEC 2020-G87 -- 89830, 374188, 35107, 163243
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-G87 -- 2019 YV3
L01Visnjan Obs. in Croatia, 4 in MPECs 2020-G84, 2020-G85, 2020-G86 & 2020-G88 -- 2020 GG2, 2020 GF2, 2020 GE2, 2020 GD2
Z92West Park Obs. in England, 1 in MPEC 2020-G87 -- 52768
C51WISE in Earth polar orbit, 3 in MPEC 2020-G87 -- 18172, 138847, 136582
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 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 FV6JPL Sentry17302092-209211.558e-08-6.81-6.810JPL: Computed at 06:31 today Pacific time based on 41 observations spanning 12.877 days (2020-Mar-29.51039 to 2020-Apr-11.38774). Diameter approximately 0.086 km. from weighted mean H=22.98.
NEODyS17302092-210328.95e-09-7.09-7.280NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2020-03-29.511 to 2020-04-11.389."

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 11 April '20

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

2240Grabbed MPEC 2020-G88 - 2020 GG2 - see above
Grabbed MPEC 2020-G89 - 2020 GH2 - see above
1730Noted that JPL Sentry has updated its 2020 FV6 risk assessment - see above
Noted that NEODyS has updated its 2020 FV6 risk assessment - see above
Grabbed MPEC 2020-G86 - 2020 GF2 - see above
Grabbed MPEC 2020-G87 - Daily Orbit Update - see above
0430Grabbed MPEC 2020-G84 - 2020 GD2 - see above
Grabbed MPEC 2020-G85 - 2020 GE2 - see above