Contents  on 7 October '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 October '20

The MPC's NEO Confirmation Page has 46 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 46 objects listed. Of these, 24 were "one nighters." So far The Tracking News has counted a total of 59 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 October '20

Minor Planet Electronic Circulars

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


MPEC 2020-T25 - "22:40 UT" - 2020 TK


MPEC 2020-T24 - "16:44 UT" - 2016 PS


<< DOU on 7 October '20 >>  MPEC 2020-T23 - "12:23 UT" - Daily Orbit Update


MPEC 2020-T22 - "08:56 UT" - 2020 SJ7


MPEC 2020-T21 - "05:11 UT" - 2020 TJ


MPEC 2020-T20 - "04:46 UT" - 2020 TH


MPEC 2020-T19 - "04:44 UT" - 2020 TG


MPEC 2020-T18 - "04:41 UT" - 2020 TF


MPEC 2020-T17 - "04:37 UT" - 2020 TE


MPEC 2020-T16 - "00:31 UT" - 2020 TD


MPEC 2020-T15 - "00:27 UT" - 2018 WC6

Observers  on 7 October '20

A total of 25 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2020-T17, 2020-T18, 2020-T19, 2020-T21 & 2020-T23 -- 2020 TJ, 2020 TH, 2020 TG, 2020 TF, 2020 TE
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2020-T23 -- 144411
T08ATLAS Mauna Loa in Hawaii, 19 in MPEC 2020-T23 -- 2020 QU6, 2020 PD1, 2020 PC5, 2020 OC8, 2013 PY6, 2007 VX137, 96744, 69230, 68359, 66008, 474179, 443837, 285990, 15817, 145656, 8035, 4503, 3288, 1036
160Castelmartini Obs. in Italy, 2 in MPEC 2020-T23 -- 470510, 162117
703Catalina Sky Survey (CSS) in Arizona, 27 in MPECs 2020-T21 & 2020-T23 -- 2020 TJ, 2020 SK5, 2020 QU6, 2020 PM7, 2020 PC5, 2016 NV38, 2013 PY6, 87684, 69230, 65690, 443837, 316695, 285990, 256412, 23187, 17182, 159402, 15817, 145656, 8567, 8035, 5645, 5143, 4953, 4197, 3691, 887
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 18 in MPECs 2020-T19, 2020-T22 & 2020-T23 -- 2020 TG, 2020 SY1, 2020 SW2, 2020 SP6, 2020 SP1, 2020 SL3, 2020 SJ7, 2020 SG4, 2020 SE3, 2020 RS6, 2020 RR8, 2020 RO6, 2020 RJ9, 2020 RE3, 2020 OQ7, 2019 OR1, 2017 BK92, 2014 YY8
U55Golden Ears Obs., 2 in MPEC 2020-T23 -- 2020 TH, 2020 TF
J95Great Shefford Obs. in England, 6 in MPECs 2020-T16, 2020-T17, 2020-T18, 2020-T20, 2020-T21 & 2020-T23 -- 2020 TJ, 2020 TH, 2020 TF, 2020 TE, 2020 TD, 2020 SX3
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-T23 -- 159402
G96Mt. Lemmon Survey (MLS) in Arizona, 37 in MPECs 2020-T15, 2020-T16, 2020-T18, 2020-T19, 2020-T20, 2020-T21, 2020-T22, 2020-T23 & 2020-T25 -- 2020 TK, 2020 TJ, 2020 TH, 2020 TG, 2020 TF, 2020 TD, 2020 ST1, 2020 SO, 2020 SM5, 2020 SJ7, 2020 SB, 2020 RQ1, 2020 RO1, 2020 RE1, 2020 RB, 2020 PX4, 2020 PC7, 2020 OA4, 2020 OA2, 2020 ML3, 2020 HP8, 2018 WC6, 2012 US9, 2009 ST19, 2006 WJ3, 85804, 415027, 276274, 253106, 219021, 190208, 162186, 162173, 154275, 153306, 8037, 3200
Z80Northolt Branch Obs. in England, 3 in MPEC 2020-T23 -- 2020 SX3, 2020 PD1, 2016 ED85
F51Pan-STARRS 1 (PS1) in Hawaii, 22 in MPECs 2020-T15, 2020-T16, 2020-T17, 2020-T23 & 2020-T24 -- 2020 TE, 2020 TD, 2020 TC, 2020 TA, 2020 RS3, 2020 QP3, 2020 PX3, 2020 PM7, 2020 OR, 2020 HP8, 2018 WC6, 2016 PS, 2013 CL89, 2011 SO32, 2011 FY2, 2011 BF59, 2006 SS19, 2001 QE34, 408752, 303262, 285838, 189630
F52Pan-STARRS 2 (PS2) in Hawaii, 20 in MPECs 2020-T16, 2020-T17, 2020-T23, 2020-T24 & 2020-T25 -- 2020 TK, 2020 TE, 2020 TD, 2020 ST6, 2020 SS2, 2020 SB2, 2020 QE4, 2020 MP, 2018 TS5, 2016 PS, 1999 EO3, 65803, 483547, 441304, 410627, 357058, 349925, 23714, 4197, 4055
B49Paus Obs. in Spain, 1 in MPEC 2020-T18 -- 2020 TF
V93Pin Oak Obs., 7 in MPEC 2020-T23 -- 2020 PC5, 2013 PY6, 2007 VX137, 420302, 19764, 159402, 3691
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2020-T25 -- 2020 TK
H36Sandlot Obs. in Kansas, 4 in MPECs 2020-T17, 2020-T18, 2020-T21 & 2020-T23 -- 2020 TJ, 2020 TF, 2020 TE, 2020 NA
C95SATINO-1 in France, 1 in MPEC 2020-T23 -- 2020 PW
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2020-T23 & 2020-T24 -- 2020 BN, 2019 YP5, 2016 PS
W34Squirrel Valley Obs. in North Carolina, 3 in MPECs 2020-T17, 2020-T20 & 2020-T23 -- 2020 TH, 2020 TE, 2020 TA
I52Steward Obs. Mt. Lemmon Station in Arizona, 36 in MPECs 2020-T16, 2020-T17, 2020-T18, 2020-T20, 2020-T21, 2020-T22, 2020-T23 & 2020-T25 -- 2020 TK, 2020 TJ, 2020 TH, 2020 TF, 2020 TE, 2020 TD, 2020 TC, 2020 TA, 2020 SX5, 2020 SX3, 2020 SU2, 2020 ST6, 2020 ST1, 2020 SS6, 2020 SS5, 2020 SO, 2020 SM6, 2020 SM5, 2020 SL, 2020 SK5, 2020 SJ7, 2020 SJ4, 2020 SF3, 2020 RY4, 2020 RW4, 2020 RU, 2020 RQ1, 2020 RA8, 2020 RA3, 2020 QZ4, 2020 QM4, 2020 PK2, 2020 OK7, 2020 NA, 2020 LE2, 2020 KZ5
W33Transit Dreams Obs., 6 in MPECs 2020-T20 & 2020-T23 -- 2020 TH, 2020 ST6, 2020 PF7, 2020 OC8, 2013 TV144, 2013 PY6
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-T23 -- 325102
L01Visnjan Obs. in Croatia, 3 in MPECs 2020-T18, 2020-T22 & 2020-T25 -- 2020 TK, 2020 TF, 2020 SJ7
I41Zwicky Transient Facility (ZTF) in southern California, 10 in MPEC 2020-T23 -- 2020 RV5, 2020 QU6, 2019 GQ3, 69230, 23714, 21088, 145656, 5836, 3288, 1865
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 October '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 THNEODyS17002114-211822.23e-07-7.65-7.670NEODyS: "Based on 28 optical observations (of which 1 are rejected as outliers) from 2020-10-06.354 to 2020-10-07.204."
2020 TFJPL Sentry17002087-210831.30412e-08-6.36-6.420JPL: Computed at 07:45 today Pacific time based on 33 observations spanning 1.9065 days (2020-Oct-05.231037 to 2020-Oct-07.137527). Diameter approximately 0.171 km. from weighted mean H=21.53.
2020 SP6JPL Sentry1700R E M O V E DJPL: Risk listing removed at 1432 UTC today
NEODyS1700R E M O V E D-
2020 GXJPL Sentry17002061-207941.1651e-09-8.09-8.430JPL: Computed at 08:02 April 4th Pacific time based on 17 observations spanning 1.9208 days (2020-Apr-02.29064 to 2020-Apr-04.21142). Diameter approximately 0.055 km. from weighted mean H=23.95.
2017 USNEODyS1700R E M O V E D-
2010 TW149JPL Sentry17002058-2113548.5520337e-06-5.50-6.040JPL: Computed at 22:19 April 8th of 2017 Pacific time based on 20 observations spanning 1.0413 days (2010-Oct-14.26727 to 2010-Oct-15.30859). Diameter approximately 0.023 km. from weighted mean H=25.89.
2006 HE2JPL Sentry17002081-210331.0517e-06-7.04-7.290JPL: Computed at 14:16 April 12th of 2017 Pacific time based on 36 observations spanning 3.1249 days (2006-Apr-19.40392 to 2006-Apr-22.52878). Diameter approximately 0.017 km. from weighted mean H=26.51.
2001 GP2JPL Sentry17002043-2107230.00021112056-4.77-4.960JPL: Computed at 23:39 April 6th of 2017 Pacific time based on 25 observations spanning 27.002 days (2001-Apr-13.3245 to 2001-May-10.32697). Diameter approximately 0.014 km. from weighted mean H=26.89.

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 October '20

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

2304Grabbed MPEC 2020-T25 - 2020 TK - see above
1700Noted that JPL Sentry has updated its 2001 GP2 risk assessment - see above
Noted that JPL Sentry has updated its 2006 HE2 risk assessment - see above
Noted that JPL Sentry has updated its 2010 TW149 risk assessment - see above
Noted that NEODyS has removed 2017 US as an impact risk - see above
Noted that JPL Sentry has updated its 2020 GX risk assessment - see above
Noted that JPL Sentry has removed 2020 SP6 as an impact risk - see above
Noted that NEODyS has removed 2020 SP6 as an impact risk - see above
Noted that JPL Sentry has posted 2020 TF as an impact risk - see above
Noted that NEODyS has posted 2020 TH as an impact risk - see above
Grabbed MPEC 2020-T21 - 2020 TJ - see above
Grabbed MPEC 2020-T22 - 2020 SJ7 - see above
Grabbed MPEC 2020-T23 - Daily Orbit Update - see above
Grabbed MPEC 2020-T24 - 2016 PS - see above
0510Grabbed MPEC 2020-T17 - 2020 TE - see above
Grabbed MPEC 2020-T18 - 2020 TF - see above
Grabbed MPEC 2020-T19 - 2020 TG - see above
Grabbed MPEC 2020-T20 - 2020 TH - see above
0330Grabbed MPEC 2020-T15 - 2018 WC6 - see above
Grabbed MPEC 2020-T16 - 2020 TD - see above