Contents  on 10 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 10 September '20

The MPC's NEO Confirmation Page has 87 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 87 objects listed. Of these, 73 were "one nighters." So far The Tracking News has counted a total of 102 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 10 September '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-R72 - "23:50 UT" - 2020 RX1


MPEC 2020-R71 - "23:43 UT" - 2020 ML3


MPEC 2020-R70 - "21:23 UT" - 2010 SF15


MPEC 2020-R69 - "19:50 UT" - 2020 QE7


MPEC 2020-R68 - "19:11 UT" - 2020 RT1


MPEC 2020-R67 - "18:47 UT" - 2006 EW52


MPEC 2020-R66 - "18:39 UT" - 2005 JT108


MPEC 2020-R65 - "17:47 UT" - 2016 TH56


MPEC 2020-R64 - "15:00 UT" - 2020 RS1


<< DOU on 10 September '20 >>  MPEC 2020-R63 - "12:02 UT" - Daily Orbit Update


MPEC 2020-R62 - "05:42 UT" - 2020 RR1


MPEC 2020-R61 - "04:30 UT" - 2020 RQ1

Observers  on 10 September '20

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPECs 2020-R61, 2020-R62, 2020-R64 & 2020-R69 -- 2020 RS1, 2020 RR1, 2020 RQ1, 2020 QE7
T05ATLAS Haleakala in Hawaii, 22 in MPEC 2020-R63 -- 2020 RR, 2020 QM1, 2020 QD, 2020 OX6, 2020 HS8, 2014 QJ33, 2013 UX14, 2013 TV144, 2010 JV153, 2006 UD63, 2005 QS10, 90075, 354952, 35107, 30825, 159402, 106538, 7025, 4953, 3691, 3288, 887
T08ATLAS Mauna Loa in Hawaii, 19 in MPECs 2020-R61, 2020-R63 & 2020-R70 -- 2020 RQ1, 2020 RF, 2020 RB, 2020 QH4, 2020 PC5, 2020 OA2, 2020 ML3, 2020 MC4, 2016 NV38, 2016 ED85, 2013 PY6, 2011 GO27, 2010 SF15, 2004 RF84, 2000 PQ27, 90147, 85804, 144411, 105140
160Castelmartini Obs. in Italy, 5 in MPEC 2020-R63 -- 2020 RW, 2020 RF, 2020 RC, 2020 RA1, 2004 QD3
703Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2020-R63 & 2020-R72 -- 2020 RX1, 66008, 436324, 115052, 5143, 3288
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 2 in MPEC 2020-R63 -- 2020 RX, 2020 QU4
W84!program code "!" (10) via DECam in Chile, 1 in MPEC 2020-R63 -- 141670
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2020-R63 -- 2020 PM4
N31Eden Obs., 2 in MPEC 2020-R63 -- 2016 NV38, 2012 DP8
K88GINOP-KHK in Hungary, 2 in MPECs 2020-R63 & 2020-R72 -- 2020 RX1, 2012 DP8
U55Golden Ears Obs., 1 in MPEC 2020-R63 -- 2020 RQ1
J95Great Shefford Obs. in England, 6 in MPECs 2020-R61, 2020-R63, 2020-R64 & 2020-R68 -- 2020 RT1, 2020 RS1, 2020 RQ1, 2020 RM, 2020 RJ, 2020 RC
A17Guidestar Obs. in Germany, 2 in MPECs 2020-R63 & 2020-R68 -- 2020 RT1, 2020 PD1
2461program code 1 via KLENOT in the Czech Republic, 2 in MPECs 2020-R64 & 2020-R68 -- 2020 RT1, 2020 RS1
Z43Landehen Obs., 1 in MPEC 2020-R63 -- 2020 RJ
K38M57 Obs. in Italy, 2 in MPECs 2020-R61 & 2020-R63 -- 2020 RQ1, 2020 RF
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2020-R63 & 2020-R69 -- 2020 QE7, 2011 ES4, 85184, 429746, 420302, 382625
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2020-R71 -- 2020 ML3
J69North Obs. in England, 2 in MPECs 2020-R61 & 2020-R68 -- 2020 RT1, 2020 RQ1
Z80Northolt Branch Obs. in England, 4 in MPECs 2020-R61 & 2020-R63 -- 2020 RQ1, 2020 RJ, 2020 RC, 2020 RA1
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-R63 -- 2020 RJ
J43Oukaimeden Obs. in Morocco, 2 in MPEC 2020-R63 -- 2020 PR3, 2006 SS19
F51Pan-STARRS 1 (PS1) in Hawaii, 33 in MPECs 2020-R62, 2020-R63, 2020-R64, 2020-R65, 2020-R66, 2020-R67, 2020-R68, 2020-R70 & 2020-R71 -- 2020 RY, 2020 RT1, 2020 RS1, 2020 RR1, 2020 RF, 2020 RE1, 2020 RC1, 2020 QQ5, 2020 PY3, 2020 OR, 2020 ML3, 2018 RW7, 2018 PP10, 2017 RD15, 2016 TH56, 2014 LW21, 2012 HD20, 2010 SF15, 2009 QN5, 2007 VX137, 2006 EW52, 2005 JT108, 90147, 465749, 435302, 302830, 301011, 248590, 23187, 16960, 154302, 5879, 1221
F52Pan-STARRS 2 (PS2) in Hawaii, 14 in MPECs 2020-R61, 2020-R62, 2020-R63, 2020-R66, 2020-R68 & 2020-R70 -- 2020 RT1, 2020 RR1, 2020 RQ1, 2020 QD, 2020 MP, 2020 ML3, 2014 QL390, 2011 ES4, 2010 SF15, 2005 JT108, 90147, 231792, 6569, 3288
L18QOS Obs., 8 in MPECs 2020-R63 & 2020-R72 -- 2020 RX1, 2020 RR, 2020 RJ, 2020 RF, 2020 RE, 2020 RC, 2020 RA1, 2014 QJ33
L04ROASTERR-1 in Romania, 3 in MPECs 2020-R61, 2020-R63 & 2020-R68 -- 2020 RT1, 2020 RQ1, 2020 RC
C95SATINO-1 in France, 1 in MPEC 2020-R63 -- 2014 QJ33
204Schiaparelli Obs. in Italy, 3 in MPECs 2020-R61, 2020-R64 & 2020-R68 -- 2020 RT1, 2020 RS1, 2020 RQ1
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-R72 -- 2020 RX1
I52Steward Obs. Mt. Lemmon Station in Arizona, 24 in MPECs 2020-R63, 2020-R64, 2020-R65, 2020-R68, 2020-R69 & 2020-R72 -- 2020 RZ, 2020 RY, 2020 RX1, 2020 RW, 2020 RT1, 2020 RS1, 2020 RR, 2020 RN, 2020 RK, 2020 RH1, 2020 RF1, 2020 RB, 2020 RA1, 2020 RA, 2020 QL2, 2020 QH2, 2020 QE7, 2020 PY3, 2020 PV1, 2020 PP2, 2020 PH5, 2020 PC7, 2020 LD3, 2016 TH56
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-R63 -- 2016 VY5
L01Visnjan Obs. in Croatia, 5 in MPECs 2020-R61, 2020-R62, 2020-R64, 2020-R68 & 2020-R72 -- 2020 RX1, 2020 RT1, 2020 RS1, 2020 RR1, 2020 RQ1
C51WISE in Earth polar orbit, 2 in MPEC 2020-R63 -- 2015 FP332, 1566
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 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 RH1NEODyS1700R E M O V E D-
JPL Sentry17002041-2092226.0492e-09-5.52-6.570JPL: Computed at 07:19 today Pacific time based on 23 observations spanning 2.7064 days (2020-Sep-06.15449 to 2020-Sep-08.86085). Diameter approximately 0.305 km. from weighted mean H=20.23.
2020 RKJPL Sentry17002089-208911.086e-07-7.20-7.200JPL: Computed at 07:01 today Pacific time based on 91 observations spanning 4.9467 days (2020-Sep-05.24723 to 2020-Sep-10.19397). Diameter approximately 0.031 km. from weighted mean H=25.23.
NEODyS17002089-210433.01e-07-6.80-6.990NEODyS: "Based on 91 optical observations (of which 1 are rejected as outliers) from 2020-09-05.248 to 2020-09-10.195."
2017 RV2JPL Sentry17002071-2119430.000125587741-4.88-5.390JPL: Computed at 07:07 Aug. 22nd Pacific time based on 141 observations spanning 38.048 days (2017-Sep-14.43497 to 2017-Oct-22.483124). Diameter approximately 0.019 km. from weighted mean H=26.23.
2008 ST7JPL Sentry17002074-2112212.699654e-05-4.39-4.810JPL: Computed at 13:25 April 12th of 2017 Pacific time based on 114 observations spanning 37.845 days (2008-Sep-24.29993 to 2008-Nov-01.14445). Diameter approximately 0.052 km. from weighted mean H=24.08.
2008 EM68JPL Sentry17002020-211610871.05836191e-05-5.31-5.650JPL: Computed at 00:27 April 7th of 2017 Pacific time based on 12 observations spanning .11019 days (2008-Mar-08.25164 to 2008-Mar-08.36183). Diameter approximately 0.010 km. from weighted mean H=27.72.

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 10 September '20

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

2358Grabbed MPEC 2020-R71 - 2020 ML3 - see above
Grabbed MPEC 2020-R72 - 2020 RX1 - see above
2230Grabbed MPEC 2020-R70 - 2010 SF15 - see above
2110Grabbed MPEC 2020-R66 - 2005 JT108 - see above
Grabbed MPEC 2020-R67 - 2006 EW52 - see above
Grabbed MPEC 2020-R68 - 2020 RT1 - see above
Grabbed MPEC 2020-R69 - 2020 QE7 - see above
1800Grabbed MPEC 2020-R65 - 2016 TH56 - see above
1700Noted that JPL Sentry has updated its 2008 EM68 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ST7 risk assessment - see above
Noted that JPL Sentry has updated its 2017 RV2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 RH1 risk assessment - see above
Noted that NEODyS has removed 2020 RH1 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 RK risk assessment - see above
Noted that NEODyS has updated its 2020 RK risk assessment - see above
Grabbed MPEC 2020-R62 - 2020 RR1 - see above
Grabbed MPEC 2020-R63 - Daily Orbit Update - see above
Grabbed MPEC 2020-R64 - 2020 RS1 - see above
0540Grabbed MPEC 2020-R61 - 2020 RQ1 - see above