Contents  on 15 August '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.

Radar Astrometry  on 15 August '20

Radar observation of two objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 0420 UTC when the database was dated 14 Aug.



Photometry and some astrometry is needed for upcoming radar targets. See Arecibo and Goldstone schedules.

NEOCP Activity  on 15 August '20

The MPC's NEO Confirmation Page has 112 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 112 objects listed. Of these, 36 were "one nighters." So far The Tracking News has counted a total of 142 listings on the NEOCP today.

New MPECs  on 15 August '20

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 22 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-P110 - "23:31 UT" - 2015 DX249


MPEC 2020-P109 - "23:23 UT" - 2020 PK3


MPEC 2020-P108 - "23:21 UT" - 2020 PJ3


MPEC 2020-P107 - "23:19 UT" - 2020 PH3


MPEC 2020-P106 - "22:27 UT" - 2020 PG3


MPEC 2020-P105 - "22:15 UT" - 2020 PF3


MPEC 2020-P104 - "22:13 UT" - 2020 PE3


<< DOU on 15 August '20 >>  MPEC 2020-P103 - "12:05 UT" - Daily Orbit Update


MPEC 2020-P102 - "11:22 UT" - 2020 PD3


MPEC 2020-P101 - "11:20 UT" - 2020 PC3


MPEC 2020-P100 - "04:32 UT" - 2020 PZ2


MPEC 2020-P99 - "02:33 UT" - 2020 PY2


MPEC 2020-P98 - "02:19 UT" - 2020 PX2


MPEC 2020-P97 - "02:18 UT" - 2020 PW2


MPEC 2020-P96 - "02:13 UT" - 2020 PV2


MPEC 2020-P95 - "02:12 UT" - 2020 PU2


MPEC 2020-P94 - "02:09 UT" - 2020 PT2


MPEC 2020-P93 - "02:07 UT" - 2020 PS2


MPEC 2020-P92 - "02:06 UT" - 2020 PR2


MPEC 2020-P91 - "02:04 UT" - 2020 PQ2


MPEC 2020-P90 - "02:02 UT" - 2020 PP2


MPEC 2020-P89 - "02:01 UT" - 2020 PO2

Observers  on 15 August '20

A total of 38 observers appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 2 in radar -- 2020 MK, 144411
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2020-P90, 2020-P98, 2020-P100, 2020-P101, 2020-P103 & 2020-P104 -- 2020 PZ2, 2020 PX2, 2020 PP2, 2020 PL2, 2020 PE3, 2020 PC3
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2020-P103 -- 420302
T08ATLAS Mauna Loa in Hawaii, 3 in MPEC 2020-P103 -- 18882, 137199, 3691
L54Berthelot Obs., 3 in MPEC 2020-P103 -- 2020 FE2, 2015 FC35, 373428
160Castelmartini Obs. in Italy, 5 in MPECs 2020-P97 & 2020-P103 -- 2020 PW2, 2020 OT, 2020 HS8, 2019 NC1, 2003 BK47
G58Chabot Obs. in northern California, 1 in MPEC 2020-P103 -- 2020 PL2
V94Cherokee Ridge Obs., 1 in MPEC 2020-P103 -- 90147
W84&program code "&" (15) via DECam in Chile, 1 in MPEC 2020-P110 -- 2015 DX249
J27El Guijo Obs. in Spain, 1 in MPEC 2020-P103 -- 500094
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-P105 -- 2020 PF3
C73Galati Obs. in Romania, 2 in MPEC 2020-P103 -- 420302, 433
W90Grainger Obs. in New Hampshire, 1 in MPEC 2020-P103 -- 85275
L63HOB Obs., 2 in MPEC 2020-P103 -- 2019 NC1, 500094
U68JPL SynTrack Robotic Telescope, 1 in MPEC 2020-P94 -- 2020 PT2
381Kiso Obs. in Japan, 1 in MPEC 2020-P97 -- 2020 PW2
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-P103 -- 85275
568^R. Wainscoat on Mauna Kea in Hawaii, 10 in MPECs 2020-P89, 2020-P92, 2020-P93, 2020-P96, 2020-P100, 2020-P102, 2020-P105, 2020-P106, 2020-P107 & 2020-P108 -- 2020 PZ2, 2020 PV2, 2020 PS2, 2020 PR2, 2020 PO2, 2020 PJ3, 2020 PH3, 2020 PG3, 2020 PF3, 2020 PD3
474Mt. John Obs. in New Zealand, 8 in MPECs 2020-P91, 2020-P102, 2020-P103, 2020-P104, 2020-P105 & 2020-P108 -- 2020 PX, 2020 PT1, 2020 PQ2, 2020 PJ3, 2020 PF3, 2020 PE3, 2020 PE1, 2020 PD3
G96Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2020-P91, 2020-P95, 2020-P101, 2020-P103, 2020-P104 & 2020-P109 -- 2020 PU2, 2020 PQ2, 2020 PK3, 2020 PE3, 2020 PC3, 2020 AK, 189630, 16960, 162173
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2020-P103 -- 2016 QE45
Z80Northolt Branch Obs. in England, 1 in MPEC 2020-P103 -- 2020 PK1
F51Pan-STARRS 1 (PS1) in Hawaii, 24 in MPECs 2020-P89, 2020-P90, 2020-P91, 2020-P93, 2020-P94, 2020-P96, 2020-P97, 2020-P98, 2020-P99, 2020-P100, 2020-P102, 2020-P103, 2020-P105, 2020-P106, 2020-P107 & 2020-P108 -- 2020 PZ2, 2020 PY2, 2020 PX2, 2020 PW2, 2020 PV2, 2020 PT2, 2020 PS2, 2020 PQ2, 2020 PP2, 2020 PO2, 2020 PJ3, 2020 PH3, 2020 PG3, 2020 PF3, 2020 PD3, 523650, 503960, 500136, 349925, 343098, 17181, 163014, 136839, 6178
F52Pan-STARRS 2 (PS2) in Hawaii, 17 in MPECs 2020-P89, 2020-P90, 2020-P92, 2020-P93, 2020-P94, 2020-P95, 2020-P96, 2020-P98, 2020-P99, 2020-P101 & 2020-P103 -- 2020 PY2, 2020 PX2, 2020 PV2, 2020 PU2, 2020 PT2, 2020 PS2, 2020 PR2, 2020 PP2, 2020 PO2, 2020 PM2, 2020 PC3, 511808, 476438, 455407, 374267, 215167, 4257
K63Pascoli Obs. in Italy, 4 in MPECs 2020-P94, 2020-P97, 2020-P101 & 2020-P104 -- 2020 PW2, 2020 PT2, 2020 PE3, 2020 PC3
K19PASTIS Obs. in France, 1 in MPEC 2020-P97 -- 2020 PW2
B49Paus Obs. in Spain, 1 in MPEC 2020-P104 -- 2020 PE3
D29Purple Mtn. Obs. Xuyi Station in China, 14 in MPEC 2020-P103 -- 2020 OJ2, 2020 OA1, 2018 GO4, 2012 PA, 2000 PQ27, 1998 MR24, 87311, 414903, 27031, 219021, 189630, 136900, 6239, 5143
L18QOS Obs., 1 in MPEC 2020-P103 -- 2020 HS8
B38Santa Mama Obs. in Italy, 2 in MPEC 2020-P103 -- 11405, 8566
C95SATINO-1 in France, 3 in MPECs 2020-P91, 2020-P103 & 2020-P104 -- 2020 PQ2, 2020 PE3, 2016 YR8
204Schiaparelli Obs. in Italy, 2 in MPECs 2020-P97 & 2020-P104 -- 2020 PW2, 2020 PE3
033Schwarzschild Obs. in Germany, 1 in MPEC 2020-P98 -- 2020 PX2
Q11Shinshiro Obs., 1 in MPEC 2020-P103 -- 162173
I93St. Pardon de Conques Obs. in France, 7 in MPECs 2020-P91, 2020-P92, 2020-P94, 2020-P95, 2020-P97, 2020-P101 & 2020-P104 -- 2020 PW2, 2020 PU2, 2020 PT2, 2020 PR2, 2020 PQ2, 2020 PE3, 2020 PC3
I52Steward Obs. Mt. Lemmon Station in Arizona, 8 in MPECs 2020-P91, 2020-P95, 2020-P98, 2020-P101, 2020-P103, 2020-P104, 2020-P107 & 2020-P109 -- 2020 PX2, 2020 PU2, 2020 PQ2, 2020 PK3, 2020 PH3, 2020 PE3, 2020 PC3, 2020 MF4
L01Visnjan Obs. in Croatia, 2 in MPECs 2020-P92 & 2020-P95 -- 2020 PU2, 2020 PR2
I41Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-P103 -- 21088, 209924, 16816
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 August '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 PW2NEODyS16002073-2106234.48e-06-7.30-7.890NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2020-08-14.278 to 2020-08-15.008."
JPL Sentry04202073-210093.75704e-06-7.37-7.770JPL: Computed at 20:31 Aug. 14th Pacific time based on 31 observations spanning .73003 days (2020-Aug-14.277211 to 2020-Aug-15.007242). Diameter approximately 0.006 km. from weighted mean H=28.66.
2020 PT2NEODyS1600210715.51e-09-9.31-9.310NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2020-08-12.333 to 2020-08-15.011."
JPL Sentry04202070-207013.699e-07-7.24-7.240JPL: Computed at 20:28 Aug. 14th Pacific time based on 22 observations spanning 2.6780 days (2020-Aug-12.332027 to 2020-Aug-15.010057). Diameter approximately 0.017 km. from weighted mean H=26.44.
2020 PQ2NEODyS16002066-209321.99e-07-6.18-6.190NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2020-08-08.478 to 2020-08-15.016."
JPL Sentry04202066-208631.50108e-07-6.29-6.310JPL: Computed at 20:28 Aug. 14th Pacific time based on 22 observations spanning 6.5375 days (2020-Aug-08.477485 to 2020-Aug-15.015). Diameter approximately 0.044 km. from weighted mean H=24.44.
2020 LVNEODyS16002107-211554.57e-06-5.94-5.960NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2020-06-14.384 to 2020-06-23.554."
JPL Sentry04202109-211424.9731e-06-5.89-5.910JPL: Computed at 17:08 Aug. 14th Pacific time based on 37 observations spanning 9.1697 days (2020-Jun-14.38305 to 2020-Jun-23.552778) including radar (1 Doppler, 2 delay). Diameter approximately 0.030 km. from weighted mean H=25.27.
2011 CW46JPL Sentry04202021-21151005.003112e-07-5.05-5.100JPL: Computed at 23:55 April 9th of 2017 Pacific time based on 11 observations spanning 1.0974 days (2011-Feb-11.24048 to 2011-Feb-12.33793). Diameter approximately 0.039 km. from weighted mean H=24.67.

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 15 August '20

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

2358Grabbed MPEC 2020-P110 - 2015 DX249 - see above
2332Grabbed MPEC 2020-P107 - 2020 PH3 - see above
Grabbed MPEC 2020-P108 - 2020 PJ3 - see above
Grabbed MPEC 2020-P109 - 2020 PK3 - see above
2310Grabbed MPEC 2020-P106 - 2020 PG3 - see above
2220Grabbed MPEC 2020-P104 - 2020 PE3 - see above
Grabbed MPEC 2020-P105 - 2020 PF3 - see above
1600Noted that NEODyS has updated its 2020 LV risk assessment - see above
Noted that NEODyS has posted 2020 PQ2 as an impact risk - see above
Noted that NEODyS has posted 2020 PT2 as an impact risk - see above
Noted that NEODyS has posted 2020 PW2 as an impact risk - see above
Grabbed MPEC 2020-P101 - 2020 PC3 - see above
Grabbed MPEC 2020-P102 - 2020 PD3 - see above
Grabbed MPEC 2020-P103 - Daily Orbit Update - see above
0506Grabbed MPEC 2020-P100 - 2020 PZ2 - see above
0420Noted that JPL Sentry has updated its 2011 CW46 risk assessment - see above
Noted that JPL Sentry has updated its 2020 LV risk assessment - see above
Noted that JPL Sentry has posted 2020 PQ2 as an impact risk - see above
Noted that JPL Sentry has posted 2020 PT2 as an impact risk - see above
Noted that JPL Sentry has posted 2020 PW2 as an impact risk - see above
Grabbed MPEC 2020-P89 - 2020 PO2 - see above
Grabbed MPEC 2020-P90 - 2020 PP2 - see above
Grabbed MPEC 2020-P91 - 2020 PQ2 - see above
Grabbed MPEC 2020-P92 - 2020 PR2 - see above
Grabbed MPEC 2020-P93 - 2020 PS2 - see above
Grabbed MPEC 2020-P94 - 2020 PT2 - see above
Grabbed MPEC 2020-P95 - 2020 PU2 - see above
Grabbed MPEC 2020-P96 - 2020 PV2 - see above
Grabbed MPEC 2020-P97 - 2020 PW2 - see above
Grabbed MPEC 2020-P98 - 2020 PX2 - see above
Grabbed MPEC 2020-P99 - 2020 PY2 - see above
Noted Radar Astrometry database update - see above