Contents  on 6 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 6 May '20

The MPC's NEO Confirmation Page has 44 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 44 objects listed. Of these, 23 were "one nighters." So far The Tracking News has counted a total of 46 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 6 May '20

Minor Planet Electronic Circulars

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


<< DOU on 6 May '20 >>  MPEC 2020-J43 - "12:04 UT" - Daily Orbit Update


MPEC 2020-J42 - "08:58 UT" - 2020 JO

Observers  on 6 May '20

A total of 23 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 9 in MPEC 2020-J43 -- 2020 HU2, 2020 HQ8, 2020 HL6, 2020 HB8, 2020 HB6, 2020 GF3, 2017 MW7, 522684, 433992
T05ATLAS Haleakala in Hawaii, 16 in MPEC 2020-J43 -- 2019 UO9, 2002 VR85, 85275, 433992, 388838, 36183, 267494, 169675, 163243, 145656, 138847, 136874, 5836, 2102, 1917, 1685
T08ATLAS Mauna Loa in Hawaii, 6 in MPEC 2020-J43 -- 2020 FB6, 68350, 333555, 331471, 137199, 1866
160Castelmartini Obs. in Italy, 3 in MPEC 2020-J43 -- 159608, 145656, 137170
703Catalina Sky Survey (CSS) in Arizona, 8 in MPEC 2020-J43 -- 2020 JD, 2015 FP332, 2010 XD11, 333555, 184990, 137199, 4257, 1866
K87Dettelbach Vineyard Obs. in Germany, 5 in MPEC 2020-J43 -- 2020 JH, 2020 JD, 2020 JB, 2020 HN5, 2020 HM4
J95Great Shefford Obs. in England, 3 in MPEC 2020-J43 -- 2020 HM4, 2020 HL6, 2020 HC6
A17Guidestar Obs. in Germany, 5 in MPEC 2020-J43 -- 2020 HN5, 2020 FA7, 2017 ME, 2011 JX1, 2002 VR85
568`Enrique Solano in Spain on Mauna Kea in Hawaii, 2 in MPEC 2020-J43 -- 213053, 1627
V01Mountainville Obs. in Utah, 2 in MPEC 2020-J43 -- 2020 JB, 2020 HN5
L81MPC code L81, 1 in MPEC 2020-J43 -- 86667
Z11MPC code Z11, 1 in MPEC 2020-J43 -- 1627
G96Mt. Lemmon Survey (MLS) in Arizona, 15 in MPECs 2020-J42 & 2020-J43 -- 2020 JO, 2020 HW1, 2020 DG2, 2018 BN3, 2010 GW62, 2009 CA2, 89830, 483878, 436324, 378610, 333555, 143637, 137175, 11405, 108906
Z80Northolt Branch Obs. in England, 3 in MPEC 2020-J43 -- 2020 HC6, 2020 HB6, 2016 HP6
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2020-J43 -- 137199
F52Pan-STARRS 2 (PS2) in Hawaii, 7 in MPEC 2020-J43 -- 2020 FB6, 89830, 498066, 35107, 184990, 136874, 4257
247roving observer, 1 in MPEC 2020-J43 -- 52768
C95SATINO-1 in France, 1 in MPEC 2020-J43 -- 2020 DA
645Sloan Digital Sky Survey (SDSS) in New Mexico, 3 in MPEC 2020-J43 -- 2013 NZ23, 2013 GZ7, 2006 SP198
I52Steward Obs. Mt. Lemmon Station in Arizona, 16 in MPECs 2020-J42 & 2020-J43 -- 2020 JO, 2020 JH, 2020 JD, 2020 JB, 2020 HW9, 2020 HV9, 2020 HQ1, 2020 HN5, 2020 HL7, 2020 HL6, 2020 HH3, 2020 HG5, 2020 HE2, 2020 HB10, 2020 GQ2, 2019 UO9
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-J43 -- 2016 FE1, 2015 CP13
L01Visnjan Obs. in Croatia, 1 in MPEC 2020-J42 -- 2020 JO
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2020-J43 -- 90075, 137199, 1866
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 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 HL6JPL Sentry16402103-210311.663e-07-8.58-8.580JPL: Computed at 06:32 today Pacific time based on 55 observations spanning 16.817 days (2020-Apr-19.44533 to 2020-May-06.262). Diameter approximately 0.009 km. from weighted mean H=27.89.
NEODyS1640210319.81e-08-8.83-8.830NEODyS: "Based on 55 optical observations (of which 0 are rejected as outliers) from 2020-04-19.446 to 2020-05-06.263."
2020 HM4JPL Sentry1640R E M O V E DJPL: Risk listing removed at 1329 UTC today
NEODyS1640R E M O V E D-

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 6 May '20

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

1640Noted that JPL Sentry has updated its 2020 HL6 risk assessment - see above
Noted that NEODyS has updated its 2020 HL6 risk assessment - see above
Noted that JPL Sentry has removed 2020 HM4 as an impact risk - see above
Noted that NEODyS has removed 2020 HM4 as an impact risk - see above
Grabbed MPEC 2020-J42 - 2020 JO - see above
Grabbed MPEC 2020-J43 - Daily Orbit Update - see above