Contents  on 4 July '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 July '20

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, seven were "one nighters." So far The Tracking News has counted a total of 21 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 July '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 4 July '20 >>  MPEC 2020-N15 - "15:01 UT" - Daily Orbit Update


MPEC 2020-N14 - "01:18 UT" - Comet C/2019 T2 (Lemmon)

Observers  on 4 July '20

A total of 29 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPEC 2020-N15 -- 2020 LY1, 2020 LY, 2020 LD1, 2020 KX1, 2020 KP2, 2020 JT, 2020 JP1, 2020 HV2, 2020 HR9, 2020 FO2, 2019 FD
T05ATLAS Haleakala in Hawaii, 19 in MPECs 2020-N14 & 2020-N15 -- C/2019 T2, 2016 AX147, 2011 FY2, 90147, 54789, 53435, 477885, 420302, 36183, 349063, 242643, 20826, 159402, 103067, 6569, 6053, 4954, 4179, 3691
T08ATLAS Mauna Loa in Hawaii, 22 in MPECs 2020-N14 & 2020-N15 -- C/2019 T2, 2017 QM18, 2015 HH10, 85989, 85275, 66391, 495615, 441987, 428086, 357058, 35107, 184990, 159856, 154278, 145656, 136874, 11405, 106589, 9162, 7092, 4055, 1685
215Buchloe Obs. in Germany, 1 in MPEC 2020-N14 -- C/2019 T2
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2020-N14 -- C/2019 T2
160Castelmartini Obs. in Italy, 13 in MPEC 2020-N15 -- 2020 MS1, 2015 HH10, 2014 LW21, 2010 EC135, 2006 UD63, 2005 MR5, 85989, 85275, 477885, 331471, 145656, 137199, 106538
V16Dark Sky New Mexico Obs. in New Mexico, 1 in MPEC 2020-N15 -- 85275
K83Forti Obs., 1 in MPEC 2020-N15 -- 2015 FP332
E89Geyserland Obs. in New Zealand, 4 in MPEC 2020-N15 -- 192563, 175189, 169675, 2102
P87Hirao Obs., 1 in MPEC 2020-N14 -- C/2019 T2
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-N14 -- C/2019 T2
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-N14 -- C/2019 T2
1861program code 1 via Kitab Obs., 1 in MPEC 2020-N14 -- C/2019 T2
C401program code 1 via Kuban State Univ. Obs. in Russia, 2 in MPEC 2020-N15 -- 8014, 6569
K91LCO Sutherland A in South Africa, 1 in MPEC 2020-N15 -- 2020 MX3
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-N15 -- 85989
568_Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2020-N14 -- C/2019 T2
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2020-N14 -- C/2019 T2
F51Pan-STARRS 1 (PS1) in Hawaii, 11 in MPECs 2020-N14 & 2020-N15 -- 2020 LG2, C/2019 T2, 2016 FY14, 2011 GH44, 2011 FB29, 2011 CY6, 66253, 65690, 53430, 292165, 20460
F52Pan-STARRS 2 (PS2) in Hawaii, 4 in MPECs 2020-N14 & 2020-N15 -- C/2019 T2, 85184, 20460, 144861
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2020-N14 -- C/2019 T2
C95SATINO-1 in France, 2 in MPECs 2020-N14 & 2020-N15 -- C/2019 T2, 18882
Q11Shinshiro Obs., 1 in MPEC 2020-N14 -- C/2019 T2
0948program code 8 via Simeis Obs. in Ukraine, 1 in MPEC 2020-N14 -- C/2019 T2
I52Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2020-N14 -- C/2019 T2
461SZTE Asteroid Program in Hungary, 1 in MPEC 2020-N14 -- C/2019 T2
X02Telescope Live in Chile, 1 in MPEC 2020-N14 -- C/2019 T2
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-N15 -- 2016 RD34
C51WISE in Earth polar orbit, 1 in MPEC 2020-N15 -- 145656
I41Zwicky Transient Facility (ZTF) in southern California, 2 in MPEC 2020-N15 -- 2020 JU, 4055
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 July '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 LONEODyS16002061-206521.92e-09-9.71-9.850NEODyS: "Based on 52 optical observations (of which 1 are rejected as outliers) from 2020-06-12.326 to 2020-06-27.422."
2016 RD34NEODyS20222051-21183207.8e-04-4.53-4.820NEODyS #2 for the day: "Based on 95 optical observations (of which 1 are rejected as outliers) from 2016-09-11.431 to 2017-01-04.281."
JPL Sentry17002051-2094210.00067669964-4.44-4.770JPL: Computed at 09:43 today Pacific time based on 92 observations spanning 114.85 days (2016-Sep-11.42997 to 2017-Jan-04.279834) including radar (1 Doppler).. Diameter approximately 0.011 km. from weighted mean H=27.41.
2014 ML67JPL Sentry17002023-2109254.311426e-07-5.01-5.190JPL: Computed at 12:00 Dec. 18th of 2019 Pacific time based on 6 observations spanning 1.0923 days (2014-Jun-29.32193 to 2014-Jun-30.414205). Diameter approximately 0.050 km. from weighted mean H=24.16.
2010 NNJPL Sentry17002049-2116452.1295744e-05-6.51-6.950JPL: Computed at 03:38 April 7th of 2017 Pacific time based on 11 observations spanning .86897 days (2010-Jul-06.44094 to 2010-Jul-07.30991). Diameter approximately 0.007 km. from weighted mean H=28.35.

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 July '20

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

2022Noted that NEODyS has updated its 2016 RD34 risk assessment - see above
1700Noted that JPL Sentry has updated its 2010 NN risk assessment - see above
Noted that JPL Sentry has updated its 2014 ML67 risk assessment - see above
Noted that JPL Sentry has updated its 2016 RD34 risk assessment - see above
1600Noted that NEODyS has updated its 2016 RD34 risk assessment - see above
Noted that NEODyS has updated its 2020 LO risk assessment - see above
Grabbed MPEC 2020-N15 - Daily Orbit Update - see above
0217Grabbed MPEC 2020-N14 - Comet C/2019 T2 (Lemmon) - see above