Contents  on 7 May '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 7 May '20

The MPC's NEO Confirmation Page has 38 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 38 objects listed. Of these, 22 were "one nighters." So far The Tracking News has counted a total of 44 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 7 May '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-J46 - "14:50 UT" - 2020 JR


<< DOU on 7 May '20 >>  MPEC 2020-J45 - "12:05 UT" - Daily Orbit Update


MPEC 2020-J44 - "02:56 UT" - 2020 JP

Observers  on 7 May '20

A total of 25 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 17 in MPEC 2020-J45 -- 2020 JH, 2020 JD, 2020 HW1, 2020 HL6, 2020 HB6, 2020 GF3, 2020 FB6, 2020 FA7, 2015 TX143, 2015 FP332, 2010 EC135, 68350, 522684, 456946, 433992, 333555, 1917
T05ATLAS Haleakala in Hawaii, 12 in MPECs 2020-J44 & 2020-J45 -- 2020 JP, 68350, 436030, 331471, 242216, 184990, 137170, 115052, 8566, 6569, 4055, 1627
T08ATLAS Mauna Loa in Hawaii, 3 in MPEC 2020-J45 -- 169675, 159929, 11066
160Castelmartini Obs. in Italy, 9 in MPEC 2020-J45 -- 2020 HB6, 2016 HP6, 90075, 86667, 66251, 438908, 163243, 138847, 115052
703Catalina Sky Survey (CSS) in Arizona, 9 in MPEC 2020-J45 -- 68350, 35107, 242216, 138847, 137170, 103067, 5626, 4055, 2102
Z99Clixby Obs. in England, 8 in MPECs 2020-J45 & 2020-J46 -- 2020 JR, 2020 JH, 2020 JD, 2020 JB, 2020 HC6, 2020 HB6, 2020 FB6, 2016 HP6
K87Dettelbach Vineyard Obs. in Germany, 8 in MPECs 2020-J45 & 2020-J46 -- 2020 JR, 2020 JH, 2020 JD, 2020 JB, 2020 HN5, 2020 HC6, 2020 HB6, 2020 FB6
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-J46 -- 2020 JR
J95Great Shefford Obs. in England, 6 in MPECs 2020-J44, 2020-J45 & 2020-J46 -- 2020 JR, 2020 JP, 2020 JH, 2020 JB, 2020 HM4, 2020 HL6
A17Guidestar Obs. in Germany, 4 in MPECs 2020-J44, 2020-J45 & 2020-J46 -- 2020 JR, 2020 JP, 2020 JB, 2020 HW1
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-J45 -- 388945
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2020-J45 & 2020-J46 -- 2020 JR, 2020 JD, 2020 HW9, 2014 HO4, 2010 FC6, 497025, 192563, 152978
Z80Northolt Branch Obs. in England, 1 in MPEC 2020-J46 -- 2020 JR
F52Pan-STARRS 2 (PS2) in Hawaii, 8 in MPEC 2020-J45 -- 85989, 524530, 482244, 276274, 18172, 139289, 138847, 5626
K63Pascoli Obs. in Italy, 2 in MPECs 2020-J44 & 2020-J46 -- 2020 JR, 2020 JP
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-J46 -- 2020 JR
C95SATINO-1 in France, 1 in MPEC 2020-J45 -- 2020 DD
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2020-J44 & 2020-J46 -- 2020 JR, 2020 JP
I52Steward Obs. Mt. Lemmon Station in Arizona, 2 in MPECs 2020-J44 & 2020-J46 -- 2020 JR, 2020 JP
V261program code 1 via UAS-ISON Obs., 1 in MPEC 2020-J45 -- 52768
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-J45 -- 2019 FU
L01Visnjan Obs. in Croatia, 2 in MPECs 2020-J44 & 2020-J46 -- 2020 JR, 2020 JP
C51WISE in Earth polar orbit, 1 in MPEC 2020-J45 -- 85989
N88Xingming Obs. #3, 1 in MPEC 2020-J46 -- 2020 JR
I41Zwicky Transient Facility (ZTF) in southern California, 2 in MPEC 2020-J45 -- 68350, 6050
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 May '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 JPJPL Sentry16202080-210021.2301e-09-6.84-6.900JPL #2 for the day: Computed at 06:27 today Pacific time based on 32 observations spanning 2.5449 days (2020-May-04.524362 to 2020-May-07.06923). Diameter approximately 0.228 km. from weighted mean H=20.90.
2020 HL6JPL Sentry1620R E M O V E DJPL: Risk listing removed at 1333 UTC today
NEODyS1620R E M O V E D-
2020 HM4NEODyS1620205413.35e-08-6.90-6.90NEODyS: "Based on 49 optical observations (of which 0 are rejected as outliers) from 2020-04-20.377 to 2020-05-06.900."
2009 VZ39JPL Sentry04302020-21168996.977798e-06-6.32-7.870JPL: Computed at 11:17 April 7th of 2017 Pacific time based on 8 observations spanning .04342 days (2009-Nov-10.27204 to 2009-Nov-10.31546). Diameter approximately 0.009 km. from weighted mean H=27.89.

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 7 May '20

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

1620Noted that JPL Sentry has removed 2020 HL6 as an impact risk - see above
Noted that NEODyS has removed 2020 HL6 as an impact risk - see above
Noted that NEODyS has reposted 2020 HM4 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 JP risk assessment - see above
Grabbed MPEC 2020-J45 - Daily Orbit Update - see above
Grabbed MPEC 2020-J46 - 2020 JR - see above
0430Noted that JPL Sentry has updated its 2009 VZ39 risk assessment - see above
Noted that JPL Sentry has posted 2020 JP as an impact risk - see above
Grabbed MPEC 2020-J44 - 2020 JP - see above