Contents  on 19 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 19 April '20

The MPC's NEO Confirmation Page has 103 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 103 objects listed. Of these, 60 were "one nighters." So far The Tracking News has counted a total of 122 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 19 April '20

Minor Planet Electronic Circulars

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


MPEC 2020-H40 - "15:34 UT" - 2020 HB1


MPEC 2020-H39 - "15:23 UT" - 2020 HY


<< DOU on 19 April '20 >>  MPEC 2020-H38 - "12:14 UT" - Daily Orbit Update


MPEC 2020-H37 - "11:57 UT" - 2020 HX


MPEC 2020-H36 - "11:56 UT" - 2020 HW


MPEC 2020-H35 - "11:53 UT" - 2020 HV


MPEC 2020-H34 - "11:50 UT" - 2020 HU


MPEC 2020-H33 - "11:48 UT" - 2020 HT


MPEC 2020-H32 - "11:41 UT" - 2020 HR


MPEC 2020-H31 - "11:37 UT" - 2020 HP


MPEC 2020-H30 - "01:55 UT" - 2020 HO


MPEC 2020-H29 - "01:47 UT" - 2020 HN

Observers  on 19 April '20

A total of 33 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 9 in MPECs 2020-H31, 2020-H34, 2020-H35, 2020-H36, 2020-H37, 2020-H38 & 2020-H39 -- 2020 HY, 2020 HX, 2020 HW, 2020 HV, 2020 HU, 2020 HP, 2020 CJ1, 2020 BY12, 483432
T05ATLAS Haleakala in Hawaii, 15 in MPECs 2020-H38 & 2020-H39 -- 2020 HY, 2020 FR5, 2020 FM6, 2020 DM4, 2017 FE90, 2006 FH36, 2004 FF29, 2001 GS2, 99935, 86667, 19764, 169675, 142555, 11066, 4954
T08ATLAS Mauna Loa in Hawaii, 31 in MPEC 2020-H38 -- 2020 GJ2, 2020 GF3, 2020 GD2, 2020 FA7, 2019 XG1, 85628, 68350, 436324, 433992, 413989, 40267, 388945, 373428, 35107, 318050, 30825, 276274, 237551, 18172, 154993, 137170, 115052, 11405, 103067, 8566, 7088, 5626, 4581, 2102, 1864, 1627
160Castelmartini Obs. in Italy, 22 in MPEC 2020-H38 -- 2020 GT2, 2020 GJ2, 2020 GD2, 2020 FA7, 2019 XG1, 2011 FZ2, 85275, 68350, 506459, 436324, 388945, 388838, 373428, 35107, 318050, 267494, 192563, 190166, 137170, 137064, 136618, 115052
703Catalina Sky Survey (CSS) in Arizona, 12 in MPEC 2020-H38 -- 2020 HM, 2015 FP332, 2010 XD11, 89830, 86067, 539940, 500094, 483878, 333555, 228368, 9400, 1866
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 3 in MPECs 2020-H30, 2020-H33 & 2020-H34 -- 2020 HU, 2020 HT, 2020 HO
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2020-H39 -- 2020 HY
734Farpoint Obs. in Kansas, 1 in MPEC 2020-H38 -- 2019 BO1
W46Foxfire Village Obs., 1 in MPEC 2020-H38 -- 52768
J95Great Shefford Obs. in England, 1 in MPEC 2020-H35 -- 2020 HV
1861program code 1 via Kitab Obs., 1 in MPEC 2020-H38 -- 2020 GD2
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-H38 -- 52768
C94MASTER-II Tunka in Russia, 1 in MPEC 2020-H38 -- 138847
G96Mt. Lemmon Survey (MLS) in Arizona, 30 in MPECs 2020-H29, 2020-H31, 2020-H32, 2020-H33, 2020-H34, 2020-H35, 2020-H36, 2020-H37, 2020-H38 & 2020-H40 -- 2020 HX, 2020 HW, 2020 HV, 2020 HU, 2020 HT, 2020 HR, 2020 HP, 2020 HN, 2020 HB1, 2020 GR2, 2020 GK2, 2020 FW6, 2020 FO2, 2020 FA7, 2020 DB5, 2020 BG8, 2016 HP6, 2009 FU4, 2001 GS2, 54686, 520862, 462550, 459386, 378610, 276274, 267720, 25330, 15745, 154993, 1864
C23Olmen Obs. in Belgium, 1 in MPEC 2020-H38 -- 52768
F51Pan-STARRS 1 (PS1) in Hawaii, 27 in MPECs 2020-H30, 2020-H31, 2020-H33, 2020-H36, 2020-H38 & 2020-H39 -- 2020 HY, 2020 HW, 2020 HT, 2020 HP, 2020 HO, 2020 HH, 2020 GS2, 2020 DR2, 2019 XG, 2019 SN10, 2019 SH6, 2017 BE32, 2013 GY7, 2012 JM4, 2011 WL2, 2009 DR36, 2002 SQ, 2000 CR101, 516154, 471034, 432509, 333510, 203217, 164400, 137911, 7088, 5646
F52Pan-STARRS 2 (PS2) in Hawaii, 19 in MPECs 2020-H32, 2020-H38 & 2020-H40 -- 2020 HR, 2020 HB1, 2020 FF5, 2020 AZ2, 2018 EE4, 2011 GD60, 2009 DR36, 2007 HX82, 68278, 465633, 459386, 433992, 331792, 243298, 232368, 184990, 154453, 12923, 8566
K63Pascoli Obs. in Italy, 2 in MPECs 2020-H35 & 2020-H39 -- 2020 HY, 2020 HV
V93Pin Oak Obs., 2 in MPEC 2020-H38 -- 52768, 138847
L18QOS Obs., 1 in MPEC 2020-H38 -- 2020 GD2
L40Saarbruecken Rastpfuhl Obs., 2 in MPEC 2020-H38 -- 2020 GD2, 52768
H36Sandlot Obs. in Kansas, 2 in MPECs 2020-H31 & 2020-H34 -- 2020 HU, 2020 HP
C95SATINO-1 in France, 1 in MPEC 2020-H38 -- 2020 AQ3
204Schiaparelli Obs. in Italy, 2 in MPECs 2020-H35 & 2020-H39 -- 2020 HY, 2020 HV
033Schwarzschild Obs. in Germany, 7 in MPECs 2020-H29, 2020-H30, 2020-H32, 2020-H33, 2020-H34, 2020-H37 & 2020-H39 -- 2020 HY, 2020 HX, 2020 HU, 2020 HT, 2020 HR, 2020 HO, 2020 HN
W88!W.F. Cashwell in Nevada via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-H38 -- 2006 FH36
W34Squirrel Valley Obs. in North Carolina, 3 in MPECs 2020-H35, 2020-H38 & 2020-H39 -- 2020 HY, 2020 HV, 2020 GZ2
I52Steward Obs. Mt. Lemmon Station in Arizona, 11 in MPECs 2020-H29, 2020-H31, 2020-H32, 2020-H33, 2020-H34, 2020-H35, 2020-H36, 2020-H37, 2020-H38, 2020-H39 & 2020-H40 -- 2020 HY, 2020 HX, 2020 HW, 2020 HV, 2020 HU, 2020 HT, 2020 HR, 2020 HP, 2020 HN, 2020 HB1, 2020 GB3
858Tebbutt Obs. in New Mexico, 1 in MPEC 2020-H37 -- 2020 HX
A16Tentlingen Obs. in Switzerland, 3 in MPEC 2020-H38 -- 2019 XG1, 52768, 373428
W33Transit Dreams Obs., 3 in MPEC 2020-H38 -- 2020 GJ2, 2020 GD2, 2020 DM4
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-H38 -- 2018 RY1
L01Visnjan Obs. in Croatia, 11 in MPECs 2020-H29, 2020-H30, 2020-H31, 2020-H32, 2020-H33, 2020-H34, 2020-H35, 2020-H36, 2020-H37, 2020-H39 & 2020-H40 -- 2020 HY, 2020 HX, 2020 HW, 2020 HV, 2020 HU, 2020 HT, 2020 HR, 2020 HP, 2020 HO, 2020 HN, 2020 HB1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 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 HNNEODyS20002055-2115511.76e-05-6.64-6.990NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2020-04-16.280 to 2020-04-18.279."
JPL Sentry04332055-2120661.60762218e-05-6.64-7.080JPL: Computed at 20:25 April 18th Pacific time based on 21 observations spanning 1.9992 days (2020-Apr-16.27939 to 2020-Apr-18.27856). Diameter approximately 0.007 km. from weighted mean H=28.50.
2020 GZ2NEODyS20002049-2064116.23e-04-4.56-4.560NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2020-04-15.392 to 2020-04-19.060."
JPL Sentry16302049-207770.000381211119-4.76-4.760JPL: Computed at 07:12 today Pacific time based on 32 observations spanning 3.6683 days (2020-Apr-15.39078 to 2020-Apr-19.05909). Diameter approximately 0.008 km. from weighted mean H=28.13.

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 19 April '20

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

2000Noted that NEODyS has updated its 2020 GZ2 risk assessment - see above
Noted that NEODyS has posted 2020 HN as an impact risk - see above
1630Noted that JPL Sentry has updated its 2020 GZ2 risk assessment - see above
Grabbed MPEC 2020-H31 - 2020 HP - see above
Grabbed MPEC 2020-H32 - 2020 HR - see above
Grabbed MPEC 2020-H33 - 2020 HT - see above
Grabbed MPEC 2020-H34 - 2020 HU - see above
Grabbed MPEC 2020-H35 - 2020 HV - see above
Grabbed MPEC 2020-H36 - 2020 HW - see above
Grabbed MPEC 2020-H37 - 2020 HX - see above
Grabbed MPEC 2020-H38 - Daily Orbit Update - see above
Grabbed MPEC 2020-H39 - 2020 HY - see above
Grabbed MPEC 2020-H40 - 2020 HB1 - see above
0433Noted that JPL Sentry has posted 2020 HN as an impact risk - see above
0240Grabbed MPEC 2020-H29 - 2020 HN - see above
Grabbed MPEC 2020-H30 - 2020 HO - see above