Contents  on 4 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 4 May '20

The MPC's NEO Confirmation Page has 51 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 51 objects listed. Of these, 28 were "one nighters." So far The Tracking News has counted a total of 66 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 4 May '20

Minor Planet Electronic Circulars

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


MPEC 2020-J37 - "22:36 UT" - Comet C/2020 J1 (Sonear)


MPEC 2020-J36 - "19:54 UT" - 2020 JK


MPEC 2020-J35 - "18:49 UT" - 2020 JJ


<< DOU on 4 May '20 >>  MPEC 2020-J34 - "12:04 UT" - Daily Orbit Update


MPEC 2020-J33 - "11:55 UT" - 2020 HJ10


MPEC 2020-J32 - "11:40 UT" - 2020 JH


MPEC 2020-J31 - "05:32 UT" - 2020 JG


MPEC 2020-J30 - "02:08 UT" - 2020 JF


MPEC 2020-J29 - "02:07 UT" - 2020 JE


MPEC 2020-J28 - "02:05 UT" - 2020 JD

Observers  on 4 May '20

A total of 36 observers appear in today's MPECs.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2020-J32 -- 2020 JH
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPECs 2020-J31, 2020-J32, 2020-J34 & 2020-J35 -- 2020 JJ, 2020 JH, 2020 JG, 2020 JD
T05ATLAS Haleakala in Hawaii, 10 in MPECs 2020-J28, 2020-J31, 2020-J34 & 2020-J35 -- 2020 JJ, 2020 JG, 2020 JD, 86067, 333555, 184990, 137199, 9400, 3752, 1866
T08ATLAS Mauna Loa in Hawaii, 35 in MPECs 2020-J31, 2020-J34 & 2020-J35 -- 2020 JJ, 2020 JG, 2020 HB6, 2020 GF3, 2020 FW3, 2016 AX147, 2004 FF29, 90075, 85628, 85275, 68278, 66251, 54789, 539940, 494706, 433992, 388945, 388838, 36183, 308242, 218863, 192563, 175189, 169675, 163243, 145656, 142555, 138847, 137064, 136923, 136874, 2102, 1917, 1685, 1221
C77Bernezzo Obs. in Italy, 1 in MPEC 2020-J32 -- 2020 JH
X74Campo dos Amarais Obs., 1 in MPEC 2020-J37 -- C/2020 J1
160Castelmartini Obs. in Italy, 8 in MPECs 2020-J31, 2020-J32 & 2020-J34 -- 2020 JH, 2020 JG, 2020 HB6, 2016 HP6, 86667, 66251, 318050, 115052
703Catalina Sky Survey (CSS) in Arizona, 22 in MPECs 2020-J28, 2020-J32 & 2020-J34 -- 2020 JH, 2020 JD, 2020 FB6, 2016 HP6, 90075, 86667, 85628, 68350, 522684, 468910, 436030, 433992, 241596, 163243, 145656, 136874, 11405, 106589, 9400, 4055, 2102, 1627
734Farpoint Obs. in Kansas, 2 in MPECs 2020-J31 & 2020-J32 -- 2020 JH, 2020 JG
W46Foxfire Village Obs., 1 in MPEC 2020-J34 -- 68278
J95Great Shefford Obs. in England, 3 in MPECs 2020-J28, 2020-J31 & 2020-J32 -- 2020 JH, 2020 JG, 2020 JD
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-J37 -- C/2020 J1
Q622Marian Urbanik in Slovakia via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-J37 -- C/2020 J1
Q625Cristovao Jacques in Brazil via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-J37 -- C/2020 J1
Q62?B. Lutkenhoner in Germany via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-J37 -- C/2020 J1
K85Kelmis Obs., 1 in MPEC 2020-J34 -- 52768
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-J34 -- 388945
Q63LCO Siding Spring A in New South Wales, 1 in MPEC 2020-J37 -- C/2020 J1
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2020-J34 -- 10150
B06Montseny Obs. in Spain, 1 in MPEC 2020-J34 -- 52768
G96Mt. Lemmon Survey (MLS) in Arizona, 25 in MPECs 2020-J29, 2020-J30, 2020-J32, 2020-J33, 2020-J34, 2020-J35 & 2020-J36 -- 2020 JK, 2020 JJ, 2020 JH, 2020 JF, 2020 JE, 2020 HX9, 2020 HJ10, 2020 HF2, 2020 HC10, 2020 FW3, 2017 KA3, 2013 ON5, 2007 HX82, 65909, 433992, 409836, 399325, 387733, 30825, 241596, 186822, 174806, 152564, 142781, 1917
Z80Northolt Branch Obs. in England, 1 in MPEC 2020-J32 -- 2020 JH
F51Pan-STARRS 1 (PS1) in Hawaii, 6 in MPECs 2020-J28 & 2020-J34 -- 2020 JD, 2020 FB6, 2020 BY12, 2010 GW62, 466508, 162157
F52Pan-STARRS 2 (PS2) in Hawaii, 3 in MPEC 2020-J34 -- 152978, 8566, 1864
B49Paus Obs. in Spain, 1 in MPEC 2020-J32 -- 2020 JH
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 2 in MPEC 2020-J34 -- 2020 HT3, 2017 KA3
D29Purple Mtn. Obs. Xuyi Station in China, 4 in MPEC 2020-J34 -- 2020 HT3, 2014 LW21, 159928, 144861
K33San Defendente Obs. in Italy, 1 in MPEC 2020-J32 -- 2020 JH
H36Sandlot Obs. in Kansas, 2 in MPECs 2020-J31 & 2020-J32 -- 2020 JH, 2020 JG
C95SATINO-1 in France, 1 in MPEC 2020-J34 -- 2020 BC16
204Schiaparelli Obs. in Italy, 3 in MPECs 2020-J28, 2020-J31 & 2020-J32 -- 2020 JH, 2020 JG, 2020 JD
W88#program code "#" (12) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-J37 -- C/2020 J1
Y00SONEAR in Brazil, 2 in MPECs 2020-J34 & 2020-J37 -- C/2020 J1, 52768
Q21Southern Utsunomiya in Japan, 1 in MPEC 2020-J34 -- 52768
W34Squirrel Valley Obs. in North Carolina, 3 in MPECs 2020-J28, 2020-J31 & 2020-J32 -- 2020 JH, 2020 JG, 2020 JD
I52Steward Obs. Mt. Lemmon Station in Arizona, 31 in MPECs 2020-J28, 2020-J29, 2020-J30, 2020-J32, 2020-J33, 2020-J34, 2020-J35 & 2020-J36 -- 2020 JK, 2020 JJ, 2020 JH, 2020 JF, 2020 JE, 2020 JD, 2020 JB, 2020 HZ6, 2020 HY8, 2020 HX9, 2020 HW9, 2020 HU2, 2020 HT4, 2020 HT3, 2020 HS6, 2020 HQ4, 2020 HQ3, 2020 HP8, 2020 HP7, 2020 HN5, 2020 HM7, 2020 HL6, 2020 HJ10, 2020 HF9, 2020 HF7, 2020 HF10, 2020 HD5, 2020 HC1, 2020 HB10, 2020 HA7, 2020 HA5
X02Telescope Live in Chile, 1 in MPEC 2020-J37 -- C/2020 J1
L01Visnjan Obs. in Croatia, 9 in MPECs 2020-J28, 2020-J29, 2020-J30, 2020-J31, 2020-J32, 2020-J34 & 2020-J36 -- 2020 JK, 2020 JH, 2020 JG, 2020 JF, 2020 JE, 2020 JD, 2020 HW1, 2020 FW3, 2006 SS19
I41Zwicky Transient Facility (ZTF) in southern California, 2 in MPEC 2020-J34 -- 2020 HT3, 68350
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 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 JKJPL Sentry21222071-2118527.6390506e-06-4.70-5.670JPL: Computed at 14:05 today Pacific time based on 14 observations spanning 1.6458 days (2020-May-02.38007 to 2020-May-04.025861). Diameter approximately 0.052 km. from weighted mean H=24.06.
2020 HF9JPL Sentry1600R E M O V E DJPL: Risk listing removed at 1333 UTC today
2020 HY8JPL Sentry16002056-207325.1714e-08-5.94-5.940JPL: Computed at 06:46 today Pacific time based on 43 observations spanning 6.9647 days (2020-Apr-27.38722 to 2020-May-04.35192). Diameter approximately 0.093 km. from weighted mean H=22.81.
NEODyS1600207315.68e-09-6.91-6.910NEODyS: "Based on 43 optical observations (of which 1 are rejected as outliers) from 2020-04-27.388 to 2020-05-04.353."
2020 HL6JPL Sentry16002069-211242.48427e-07-8.48-8.680JPL: Computed at 06:34 today Pacific time based on 40 observations spanning 14.749 days (2020-Apr-19.44533 to 2020-May-04.1947). Diameter approximately 0.008 km. from weighted mean H=28.03.
NEODyS1600206914.45e-11-12.01-12.010NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2020-04-19.446 to 2020-05-04.196."
2020 HQ4JPL Sentry16002060-2119430.00014292425-5.02-5.410JPL: Computed at 06:43 today Pacific time based on 96 observations spanning 12.057 days (2020-Apr-22.14953 to 2020-May-04.20693). Diameter approximately 0.014 km. from weighted mean H=26.88.
NEODyS16002051-21181551.5e-04-5.04-5.560NEODyS: "Based on 99 optical observations (of which 1 are rejected as outliers) from 2020-04-22.150 to 2020-05-04.208."

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 4 May '20

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

2253Grabbed MPEC 2020-J37 - Comet C/2020 J1 (Sonear) - see above
2122Noted that JPL Sentry has posted 2020 JK as an impact risk - see above
2000Grabbed MPEC 2020-J35 - 2020 JJ - see above
Grabbed MPEC 2020-J36 - 2020 JK - see above
1600Noted that JPL Sentry has removed 2020 HF9 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 HQ4 risk assessment - see above
Noted that NEODyS has updated its 2020 HQ4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 HY8 risk assessment - see above
Noted that NEODyS has updated its 2020 HY8 risk assessment - see above
Grabbed MPEC 2020-J31 - 2020 JG - see above
Grabbed MPEC 2020-J32 - 2020 JH - see above
Grabbed MPEC 2020-J33 - 2020 HJ10 - see above
Grabbed MPEC 2020-J34 - Daily Orbit Update - see above
0440Grabbed MPEC 2020-J28 - 2020 JD - see above
Grabbed MPEC 2020-J29 - 2020 JE - see above
Grabbed MPEC 2020-J30 - 2020 JF - see above