Contents  on 2 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 2 May '20

The MPC's NEO Confirmation Page has 63 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 63 objects listed. Of these, 38 were "one nighters." So far The Tracking News has counted a total of 70 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 2 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-J19 - "18:58 UT" - 2020 JA


<< DOU on 2 May '20 >>  MPEC 2020-J18 - "12:02 UT" - Daily Orbit Update


MPEC 2020-J17 - "11:47 UT" - 2020 HF10

Observers  on 2 May '20

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPEC 2020-J18 -- 2020 HK1, 2020 HH, 2020 GK1
T05ATLAS Haleakala in Hawaii, 28 in MPEC 2020-J18 -- 2020 HB6, 2020 GF3, 2020 GD2, 2019 XG1, 2017 KA3, 2010 EC135, 2002 VR85, 90075, 86667, 66251, 539940, 498066, 433992, 388945, 388838, 315098, 267494, 210012, 190166, 175189, 163243, 142555, 137064, 136923, 11066, 7753, 6050, 1685
T08ATLAS Mauna Loa in Hawaii, 7 in MPEC 2020-J18 -- 68350, 436324, 35107, 333555, 184990, 137199, 1866
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2020-J19 -- 2020 JA
734Farpoint Obs. in Kansas, 6 in MPEC 2020-J18 -- 2020 HF2, 2020 HC6, 2020 GF3, 2020 FE6, 2017 FE90, 2006 FH36
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2020-J19 -- 2020 JA
W46Foxfire Village Obs., 6 in MPEC 2020-J18 -- 86667, 85628, 66251, 394783, 333555, 4954
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-J18 -- 388945
474Mt. John Obs. in New Zealand, 1 in MPEC 2020-J17 -- 2020 HF10
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2020-J17 & 2020-J18 -- 2020 HF10, 522684, 417871, 152564, 137170
F51Pan-STARRS 1 (PS1) in Hawaii, 17 in MPECs 2020-J18 & 2020-J19 -- 2020 JA, 2020 HX9, 2020 HT3, 2020 HQ2, 2020 HL6, 2020 HL4, 2020 HK7, 2020 HG9, 2020 HC10, 2018 VX, 86667, 66251, 65909, 189973, 186822, 142781, 2202
F52Pan-STARRS 2 (PS2) in Hawaii, 6 in MPEC 2020-J18 -- 2020 HU2, 2018 GX4, 2013 ON5, 250614, 210012, 144861
V93Pin Oak Obs., 4 in MPEC 2020-J18 -- 99935, 388945, 138847, 1627
L04ROASTERR-1 in Romania, 2 in MPEC 2020-J18 -- 2020 GF3, 137199
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-J19 -- 2020 JA
C95SATINO-1 in France, 1 in MPEC 2020-J18 -- 2020 BL13
Y00SONEAR in Brazil, 2 in MPEC 2020-J18 -- 99935, 86667
W34Squirrel Valley Obs. in North Carolina, 2 in MPEC 2020-J18 -- 2020 HN5, 539940
I52Steward Obs. Mt. Lemmon Station in Arizona, 18 in MPECs 2020-J17, 2020-J18 & 2020-J19 -- 2020 JA, 2020 HZ6, 2020 HX7, 2020 HV4, 2020 HU9, 2020 HR8, 2020 HQ3, 2020 HO8, 2020 HN6, 2020 HN5, 2020 HM4, 2020 HL4, 2020 HG2, 2020 HF10, 2020 HB9, 2020 HB6, 2020 HB5, 2020 AZ2
858Tebbutt Obs. in New Mexico, 1 in MPEC 2020-J17 -- 2020 HF10
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-J18 -- 2018 GR4
Z57Zuben Obs., 3 in MPEC 2020-J18 -- 2020 HB6, 175189, 1917
I41Zwicky Transient Facility (ZTF) in southern California, 5 in MPEC 2020-J18 -- 86067, 511523, 483878, 4055, 1917
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 2 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 Sentry16102069-211551.11111e-06-7.73-7.970JPL: Computed at 07:35 today Pacific time based on 33 observations spanning 12.092 days (2020-Apr-19.44533 to 2020-May-01.537647). Diameter approximately 0.008 km. from weighted mean H=28.02.
NEODyS16102069-2117151.07e-06-7.78-8.10NEODyS: "Based on 34 optical observations (of which 1 are rejected as outliers) from 2020-04-19.446 to 2020-05-01.538."
2020 HM4JPL Sentry16102061-206111.022e-07-6.51-6.510JPL: Computed at 07:29 today Pacific time based on 39 observations spanning 11.778 days (2020-Apr-20.3758 to 2020-May-02.15359). Diameter approximately 0.040 km. from weighted mean H=24.65.
NEODyS16102047-206124.73e-08-6.87-6.880NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2020-04-20.377 to 2020-05-02.154."
2020 GK1JPL Sentry1610R E M O V E DJPL: Risk listing removed at 1429 UTC today
2018 GR4JPL Sentry16102058-2120380.000327377188-4.63-4.680JPL: Computed at 07:41 today Pacific time based on 66 observations spanning 63.959 days (2018-Apr-12.31705 to 2018-Jun-15.276248). Diameter approximately 0.013 km. from weighted mean H=27.08.
NEODyS16102058-21181052.51e-04-4.78-4.850NEODyS: "Based on 68 optical observations (of which 2 are rejected as outliers) from 2018-04-12.318 to 2018-06-15.277."

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 2 May '20

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

1933Grabbed MPEC 2020-J19 - 2020 JA - see above
1610Noted that JPL Sentry has updated its 2018 GR4 risk assessment - see above
Noted that NEODyS has updated its 2018 GR4 risk assessment - see above
Noted that JPL Sentry has removed 2020 GK1 as an impact risk - see above
Noted 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 updated its 2020 HM4 risk assessment - see above
Noted that NEODyS has updated its 2020 HM4 risk assessment - see above
Grabbed MPEC 2020-J17 - 2020 HF10 - see above
Grabbed MPEC 2020-J18 - Daily Orbit Update - see above