Contents  on 7 September '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 7 September '20

The MPC's NEO Confirmation Page has 42 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 42 objects listed. Of these, 22 were "one nighters." So far The Tracking News has counted a total of 49 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 7 September '20

Minor Planet Electronic Circulars

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


MPEC 2020-R32 - "17:19 UT" - Comet P/2013 O2 = P/2020 O4 (Panstarrs)


<< DOU on 7 September '20 >>  MPEC 2020-R31 - "12:01 UT" - Daily Orbit Update


MPEC 2020-R30 - "06:42 UT" - 2020 RR


MPEC 2020-R29 - "06:40 UT" - 2020 RQ


MPEC 2020-R28 - "06:39 UT" - 2020 RP


MPEC 2020-R27 - "06:37 UT" - 2020 RO


MPEC 2020-R26 - "01:18 UT" - 2020 RN


MPEC 2020-R25 - "01:00 UT" - 2020 RM

Observers  on 7 September '20

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

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2020-R31 -- 2011 ES4
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2020-R26, 2020-R27, 2020-R28, 2020-R30 & 2020-R31 -- 2020 RR, 2020 RP, 2020 RO, 2020 RN, 2020 PZ2, 2020 PO3, 2020 PF
T05ATLAS Haleakala in Hawaii, 20 in MPECs 2020-R30 & 2020-R31 -- 2020 RR, 2020 RC, 2020 OA2, 2020 LB3, 2014 QJ33, 2013 TV144, 2011 ES4, 2006 UD63, 2006 HB, 2005 QS10, 2004 QD3, 54789, 503960, 500094, 498066, 302830, 20826, 137799, 5645, 3691
T08ATLAS Mauna Loa in Hawaii, 12 in MPECs 2020-R31 & 2020-R32 -- 2020 OC8, P/2013 O2, 66008, 420302, 163081, 136900, 115052, 8566, 8014, 5587, 3752, 2368
A05Belesta Obs. in France, 1 in MPEC 2020-R32 -- P/2020 O4
215Buchloe Obs. in Germany, 1 in MPEC 2020-R32 -- P/2013 O2
160Castelmartini Obs. in Italy, 10 in MPEC 2020-R31 -- 2012 DP8, 87684, 85804, 65690, 470678, 420302, 382625, 354952, 162173, 106538
703Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2020-R31 -- 2020 QO4, 2011 ES4, 87684, 66008, 428086, 382625, 10115
958Dax Obs. in France, 1 in MPEC 2020-R30 -- 2020 RR
W84&program code "&" (15) via DECam in Chile, 5 in MPEC 2020-R31 -- 2017 WM1, 2017 WA28, 2017 UL1, 2017 UD3, 2017 OH7
K87Dettelbach Vineyard Obs. in Germany, 7 in MPEC 2020-R31 -- 2020 RK, 2020 RJ, 2020 RF, 2020 RE, 2020 RC, 2011 ES4, 2002 JE9
734Farpoint Obs. in Kansas, 1 in MPEC 2020-R26 -- 2020 RN
K83Forti Obs., 2 in MPECs 2020-R25 & 2020-R26 -- 2020 RN, 2020 RM
J95Great Shefford Obs. in England, 4 in MPECs 2020-R26, 2020-R30 & 2020-R31 -- 2020 RR, 2020 RN, 2020 RM, 2020 RC
L63HOB Obs., 5 in MPEC 2020-R31 -- 2006 HB, 420302, 19764, 159402, 136900
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-R31 -- 2011 ES4
Z43Landehen Obs., 2 in MPEC 2020-R31 -- 2020 RE, 136900
V01Mountainville Obs. in Utah, 3 in MPECs 2020-R26 & 2020-R31 -- 2020 RN, 2020 RF, 2020 RA
U83Mt. Laguna Obs., 1 in MPEC 2020-R31 -- 2020 QF6
G96Mt. Lemmon Survey (MLS) in Arizona, 18 in MPECs 2020-R25, 2020-R31 & 2020-R32 -- 2020 RM, 2020 QR6, 2020 QO4, 2020 MF2, 2020 LH1, P/2013 O2, 2004 XP14, 2004 QD17, 90147, 88188, 85804, 419022, 415029, 326332, 219021, 21088, 162186, 105140
J69North Obs. in England, 1 in MPEC 2020-R31 -- 2020 RE
G34Oberfrauendorf Obs. in Germany, 2 in MPECs 2020-R30 & 2020-R31 -- 2020 RR, 2020 RC
F51Pan-STARRS 1 (PS1) in Hawaii, 22 in MPECs 2020-R26, 2020-R27, 2020-R28, 2020-R29, 2020-R30 & 2020-R31 -- 2020 RR, 2020 RQ, 2020 RP, 2020 RO, 2020 RN, 2020 QX, 2020 QD5, 2020 QA5, 2020 PC3, 2020 OS3, 2020 OJ3, 2020 MD2, 2020 LB3, 2017 UP2, 2017 RT1, 2016 YO3, 2013 TV144, 2013 QN48, 2011 EZ40, 2010 EC135, 2009 OS5, 159929
F52Pan-STARRS 2 (PS2) in Hawaii, 13 in MPECs 2020-R27, 2020-R29, 2020-R31 & 2020-R32 -- 2020 RQ, 2020 RO, 2020 QO4, 2020 QE5, 2020 PR3, 2020 OV5, P/2013 O2, 2011 FY2, 2006 UD63, 2004 QD3, 2003 OA3, 86666, 395143
D29Purple Mtn. Obs. Xuyi Station in China, 19 in MPEC 2020-R31 -- 2020 RO, 2020 QX4, 2020 PR3, 2020 LB3, 2014 QJ33, 2006 HB, 2005 QS10, 2004 QD3, 86666, 66008, 470678, 354952, 304153, 173689, 106538, 7025, 5143, 3288, 1865
L18QOS Obs., 9 in MPECs 2020-R30 & 2020-R31 -- 2020 RR, 2020 RC, 2020 RA, 2020 QV6, 2020 QM1, 2014 QJ33, 2002 JE9, 285990, 163081
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2020-R25 & 2020-R26 -- 2020 RN, 2020 RM
233San Vito Obs. in Italy, 1 in MPEC 2020-R31 -- 136900
C95SATINO-1 in France, 1 in MPEC 2020-R31 -- 2012 DP8
Y00SONEAR in Brazil, 1 in MPEC 2020-R31 -- 85275
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2020-R30 & 2020-R31 -- 2020 RR, 2020 RN
I93St. Pardon de Conques Obs. in France, 3 in MPECs 2020-R25, 2020-R26 & 2020-R30 -- 2020 RR, 2020 RN, 2020 RM
I52Steward Obs. Mt. Lemmon Station in Arizona, 21 in MPECs 2020-R25, 2020-R26, 2020-R27, 2020-R29, 2020-R30 & 2020-R31 -- 2020 RR, 2020 RQ, 2020 RO, 2020 RN, 2020 RM, 2020 RF, 2020 RC, 2020 RB, 2020 RA, 2020 QV6, 2020 QP6, 2020 QL6, 2020 QD2, 2020 PS5, 2020 PR3, 2020 PM4, 2020 PF1, 2020 OK7, 2020 OK5, 2017 RD15, 2013 RU5
A16Tentlingen Obs. in Switzerland, 3 in MPEC 2020-R31 -- 66008, 136900, 105140
W33Transit Dreams Obs., 1 in MPEC 2020-R26 -- 2020 RN
T09UH/Tholen NEO Follow-Up Subaru Telescope in Hawaii, 1 in MPEC 2020-R31 -- 2011 ES4
L01Visnjan Obs. in Croatia, 3 in MPECs 2020-R25, 2020-R26 & 2020-R30 -- 2020 RR, 2020 RN, 2020 RM
I41Zwicky Transient Facility in southern California, 1 in MPEC 2020-R31 -- 2020 RC
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 September '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 RMJPL Sentry1740R E M O V E DJPL #2 for the day: Risk listing removed at 1654 UTC today
2020 RKJPL Sentry17402089-208911.428e-07-7.08-7.080JPL: Computed at 09:49 today Pacific time based on 73 observations spanning 1.7669 days (2020-Sep-05.24723 to 2020-Sep-07.01411). Diameter approximately 0.031 km. from weighted mean H=25.22.
NEODyS16112060-210454.52e-07-6.62-6.820NEODyS #2 for the day: "Based on 73 optical observations (of which 1 are rejected as outliers) from 2020-09-05.248 to 2020-09-07.015."
2020 QN1NEODyS05002099-211381.23e-06-5.42-5.520NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2020-07-31.389 to 2020-09-06.384."
2017 RX17JPL Sentry05002029-2116433.328024e-07-7.23-7.920JPL: Computed at 08:11 Sept. 27th of 2017 Pacific time based on 6 observations spanning .96029 days (2017-Sep-14.41066 to 2017-Sep-15.37095). Diameter approximately 0.014 km. from weighted mean H=26.95.
2016 WQ1NEODyS05002091-211823.02e-08-9.28-9.480NEODyS: "Based on 65 optical observations (of which 0 are rejected as outliers) from 2016-11-20.409 to 2016-12-24.446."
2014 QC391JPL Sentry05002078-2116445.5578435e-05-5.77-6.220JPL: Computed at 01:04 April 10th of 2017 Pacific time based on 18 observations spanning 5.7591 days (2014-Aug-29.26924 to 2014-Sep-04.028333). Diameter approximately 0.011 km. from weighted mean H=27.48.
2011 ES4NEODyS0500R E M O V E D-

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 7 September '20

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

1740Noted that JPL Sentry has updated its 2020 RK risk assessment - see above
Noted that JPL Sentry has removed 2020 RM as an impact risk - see above
Grabbed MPEC 2020-R32 - Comet P/2013 O2 = P/2020 O4 (Panstarrs) - see above
1611Noted that NEODyS has updated its 2020 RK risk assessment - see above
1610Grabbed MPEC 2020-R27 - 2020 RO - see above
Grabbed MPEC 2020-R28 - 2020 RP - see above
Grabbed MPEC 2020-R29 - 2020 RQ - see above
Grabbed MPEC 2020-R30 - 2020 RR - see above
Grabbed MPEC 2020-R31 - Daily Orbit Update - see above
0500Noted that NEODyS has removed 2011 ES4 as an impact risk - see above
Noted that JPL Sentry has updated its 2014 QC391 risk assessment - see above
Noted that NEODyS has updated its 2016 WQ1 risk assessment - see above
Noted that JPL Sentry has updated its 2017 RX17 risk assessment - see above
Noted that NEODyS has updated its 2020 QN1 risk assessment - see above
Noted that NEODyS has posted 2020 RK as an impact risk - see above
Noted that JPL Sentry has posted 2020 RM as an impact risk - see above
Grabbed MPEC 2020-R25 - 2020 RM - see above
Grabbed MPEC 2020-R26 - 2020 RN - see above