Contents  on 9 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 9 October '20

The MPC's NEO Confirmation Page has 36 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 36 objects listed. Of these, eighteen were "one nighters." So far The Tracking News has counted a total of 56 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 9 October '20

Minor Planet Electronic Circulars

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


MPEC 2020-T59 - "23:38 UT" - 2020 TT1


MPEC 2020-T58 - "23:32 UT" - 2020 TS1


MPEC 2020-T57 - "23:29 UT" - 2020 TR1


MPEC 2020-T56 - "23:28 UT" - 2020 TQ1


MPEC 2020-T55 - "23:27 UT" - 2020 TP1


MPEC 2020-T54 - "19:58 UT" - 2020 TO1


<< DOU on 9 October '20 >>  MPEC 2020-T53 - "12:25 UT" - Daily Orbit Update


MPEC 2020-T52 - "11:13 UT" - 2020 TK1


MPEC 2020-T51 - "11:07 UT" - 2020 TJ1


MPEC 2020-T50 - "11:00 UT" - 2020 TH1


MPEC 2020-T49 - "10:57 UT" - 2020 TG1


MPEC 2020-T48 - "03:04 UT" - 2020 TF1


MPEC 2020-T47 - "00:46 UT" - 2020 TE1


MPEC 2020-T46 - "00:28 UT" - 2020 TD1

Observers  on 9 October '20

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 12 in MPECs 2020-T47, 2020-T50, 2020-T51 & 2020-T53 -- 2020 TJ1, 2020 TH1, 2020 TE1, 2020 TD1, 2020 SE3, 2020 RR7, 2020 QQ5, 2020 QP5, 2020 QB3, 2020 PC7, 2020 OV6, 2020 MO5
T05ATLAS Haleakala in Hawaii, 38 in MPECs 2020-T53 & 2020-T55 -- 2020 TP1, 2020 TP, 2020 RV5, 2020 QU6, 2020 PD1, 2020 PC5, 2020 OC8, 2020 LB3, 2016 TZ56, 2013 UX14, 2013 TV144, 2013 PY6, 2013 GY7, 2007 VX137, 96744, 88264, 69230, 68359, 66008, 65717, 474179, 443837, 285990, 256412, 23714, 23187, 19764, 163081, 159856, 15817, 145656, 136900, 5143, 4503, 3691, 3671, 3288, 1036
T08ATLAS Mauna Loa in Hawaii, 13 in MPEC 2020-T53 -- 2020 TP, 2020 RK2, 2020 PF7, 2016 ED85, 2007 TG8, 2005 JT108, 2004 RF84, 2001 SG286, 90147, 428086, 36284, 242216, 144411
Z842E. Schwab via Calar Alto Schmidt in Spain, 2 in MPECs 2020-T50 & 2020-T53 -- 2020 TH1, 2016 VG3
160Castelmartini Obs. in Italy, 8 in MPEC 2020-T53 -- 480004, 479325, 378610, 370307, 275611, 248083, 185851, 171819
703Catalina Sky Survey (CSS) in Arizona, 33 in MPECs 2020-T46 & 2020-T53 -- 2020 TD1, 2020 RV5, 2020 QU6, 2020 PM7, 2020 PD1, 2020 PC5, 2020 OC8, 2020 LB3, 2016 TZ56, 2013 PY6, 2007 VX137, 96744, 88264, 69230, 66008, 65717, 480824, 474179, 443837, 31669, 285990, 23714, 17182, 159402, 15817, 145656, 140288, 8035, 5143, 4503, 3288, 1943, 1685
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 26 in MPECs 2020-T48, 2020-T50, 2020-T51, 2020-T52 & 2020-T53 -- 2020 TK1, 2020 TJ1, 2020 TH1, 2020 TF1, 2020 SX2, 2020 SO5, 2020 SM3, 2020 SH6, 2020 SH3, 2020 SE5, 2020 SA7, 2020 RV8, 2020 RO6, 2020 RB8, 2020 QQ5, 2020 QN1, 2020 OV6, 2020 MO4, 2020 HA8, 2019 TQ4, 2017 BP31, 2016 VS5, 2014 LA27, 2014 HN123, 2013 HR11, 2011 VH5
970Chelmsford Obs. in England, 1 in MPEC 2020-T55 -- 2020 TP1
J27El Guijo Obs. in Spain, 2 in MPEC 2020-T53 -- 2001 SG286, 159402
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-T55 -- 2020 TP1
K83Forti Obs., 2 in MPEC 2020-T53 -- 2007 VX137, 2000 TU28
W46Foxfire Village Obs., 5 in MPEC 2020-T53 -- 316695, 303262, 285990, 19764, 162173
K88GINOP-KHK in Hungary, 1 in MPEC 2020-T53 -- 2020 TP
J95Great Shefford Obs. in England, 8 in MPECs 2020-T46, 2020-T47, 2020-T48, 2020-T51, 2020-T53, 2020-T55, 2020-T57 & 2020-T59 -- 2020 TT1, 2020 TR1, 2020 TP1, 2020 TJ1, 2020 TF1, 2020 TE1, 2020 TD1, 2020 SX3
N51GROWTH India Telescope, 1 in MPEC 2020-T53 -- 2020 QQ6
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-T53 -- 159402
130Lumezzane Obs. in Italy, 2 in MPEC 2020-T53 -- 303262, 159402
L52MASTER Tavrida, 1 in MPEC 2020-T53 -- 2013 PY6
474Mt. John Obs. in New Zealand, 5 in MPECs 2020-T54, 2020-T56, 2020-T57, 2020-T58 & 2020-T59 -- 2020 TT1, 2020 TS1, 2020 TR1, 2020 TQ1, 2020 TO1
G96Mt. Lemmon Survey (MLS) in Arizona, 56 in MPECs 2020-T46, 2020-T47, 2020-T48, 2020-T50, 2020-T51, 2020-T53, 2020-T54, 2020-T57, 2020-T58 & 2020-T59 -- 2020 TX, 2020 TT1, 2020 TS1, 2020 TR1, 2020 TO1, 2020 TJ1, 2020 TH1, 2020 TF1, 2020 TE1, 2020 TD1, 2020 SV3, 2020 ST6, 2020 SS6, 2020 SS2, 2020 SB2, 2020 RV5, 2020 RH7, 2020 RA8, 2020 RA3, 2020 QE4, 2020 PC5, 2020 OS3, 2020 NA, 2020 MP, 2020 LB3, 2018 TS5, 2017 ST20, 2017 SE19, 2011 CG2, 2009 FY29, 1999 SK10, 96744, 88264, 68359, 65690, 488640, 446789, 441304, 413002, 410622, 407653, 353190, 347634, 236716, 19764, 162913, 154269, 145656, 143624, 140158, 11398, 8035, 5143, 4450, 3288, 2201
J69North Obs. in England, 1 in MPEC 2020-T55 -- 2020 TP1
Z80Northolt Branch Obs. in England, 2 in MPECs 2020-T53 & 2020-T55 -- 2020 TZ, 2020 TP1
F51Pan-STARRS 1 (PS1) in Hawaii, 27 in MPECs 2020-T46, 2020-T48, 2020-T49, 2020-T50, 2020-T52, 2020-T53, 2020-T54, 2020-T56 & 2020-T58 -- 2020 TS1, 2020 TQ1, 2020 TO1, 2020 TK1, 2020 TH1, 2020 TG1, 2020 TF1, 2020 TD1, 2020 TD, 2020 SU2, 2020 ST1, 2020 RE, 2020 QY4, 2020 PC7, 2020 ML3, 2020 HP8, 2020 BU16, 2016 VG3, 2013 PY6, 2011 EZ40, 2010 CW180, 2000 PQ27, 496001, 388838, 354952, 163373, 154302
F52Pan-STARRS 2 (PS2) in Hawaii, 8 in MPEC 2020-T53 -- 2020 HP8, 2015 BF4, 2007 SR1, 2000 PQ27, 65690, 407653, 162913, 140333
W16Pleasant Groves Obs., 1 in MPEC 2020-T53 -- 2020 SG3
D29Purple Mtn. Obs. Xuyi Station in China, 9 in MPEC 2020-T53 -- 2020 ST6, 2020 SK5, 2020 QE4, 2018 TS5, 2007 VX137, 65717, 404108, 27002, 23714
H36Sandlot Obs. in Kansas, 3 in MPECs 2020-T47, 2020-T56 & 2020-T58 -- 2020 TS1, 2020 TQ1, 2020 TE1
C95SATINO-1 in France, 1 in MPEC 2020-T53 -- 2020 PX1
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2020-T55 & 2020-T56 -- 2020 TQ1, 2020 TP1
I52Steward Obs. Mt. Lemmon Station in Arizona, 45 in MPECs 2020-T46, 2020-T47, 2020-T48, 2020-T49, 2020-T50, 2020-T51, 2020-T53, 2020-T54, 2020-T56, 2020-T57, 2020-T58 & 2020-T59 -- 2020 TT1, 2020 TS1, 2020 TR1, 2020 TR, 2020 TQ1, 2020 TQ, 2020 TP, 2020 TO1, 2020 TO, 2020 TN, 2020 TL, 2020 TK, 2020 TJ1, 2020 TJ, 2020 TH1, 2020 TH, 2020 TG1, 2020 TG, 2020 TF1, 2020 TF, 2020 TE1, 2020 TE, 2020 TD1, 2020 TD, 2020 TC, 2020 TA, 2020 ST6, 2020 SS6, 2020 SS4, 2020 SO, 2020 SK5, 2020 SG1, 2020 SB, 2020 RX3, 2020 RW2, 2020 RV2, 2020 RR3, 2020 RR2, 2020 RH7, 2020 RG, 2020 RA3, 2020 QU6, 2020 QS, 2020 PP2, 2020 OK7
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-T53 -- 2015 TB179
L01Visnjan Obs. in Croatia, 11 in MPECs 2020-T46, 2020-T47, 2020-T48, 2020-T49, 2020-T50, 2020-T51, 2020-T53, 2020-T55, 2020-T56 & 2020-T57 -- 2020 TR1, 2020 TQ1, 2020 TP1, 2020 TJ1, 2020 TH1, 2020 TG1, 2020 TF1, 2020 TE1, 2020 TD1, 2013 UX14, 2007 UY1
I41Zwicky Transient Facility (ZTF) in southern California, 15 in MPECs 2020-T53 & 2020-T55 -- 2020 TP1, 2020 QU6, 2020 PD1, 2012 SH32, 404108, 343158, 23183, 219071, 209924, 162463, 15817, 137062, 12711, 3691, 3200
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 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 TB1JPL Sentry01142102-211535.5625e-09-9.32-9.640JPL: Computed at 17:10 Oct. 8th Pacific time based on 15 observations spanning .92662 days (2020-Oct-07.370107 to 2020-Oct-08.29673). Diameter approximately 0.017 km. from weighted mean H=26.53.
2020 TWNEODyS17052072-2117126.26e-07-7.69-7.910NEODyS: "Based on 37 optical observations (of which 1 are rejected as outliers) from 2020-10-07.276 to 2020-10-08.875."
2020 THNEODyS1705211412.09e-07-7.60-7.60NEODyS: "Based on 32 optical observations (of which 2 are rejected as outliers) from 2020-10-06.354 to 2020-10-08.318."
2020 TFJPL Sentry1705R E M O V E DJPL: Risk listing removed at 1608 UTC today
2020 QN1JPL Sentry17052113-211312.609e-08-7.09-7.090JPL: Computed at 08:48 today Pacific time based on 53 observations spanning 69.758 days (2020-Jul-31.38815 to 2020-Oct-09.146338). Diameter approximately 0.080 km. from weighted mean H=23.14.
2019 ULJPL Sentry01142088-2117150.00011035096-6.15-6.360JPL: Computed at 06:44 March 27th Pacific time based on 55 observations spanning 8.8978 days (2019-Oct-17.256181 to 2019-Oct-26.15395). Diameter approximately 0.006 km. from weighted mean H=28.74.
2016 TG94JPL Sentry01142096-2116166.9065594e-06-7.74-8.320JPL: Computed at 14:06 April 15th of 2017 Pacific time based on 12 observations spanning 1.0024 days (2016-Oct-09.39982 to 2016-Oct-10.40223). Diameter approximately 0.004 km. from weighted mean H=29.65.
2015 KH160JPL Sentry01142087-210733.497e-08-7.80-7.930JPL: Computed at 11:19 April 8th of 2017 Pacific time based on 18 observations spanning .95354 days (2015-May-26.23332 to 2015-May-27.18686). Diameter approximately 0.018 km. from weighted mean H=26.39.
2010 TW54JPL Sentry01142074-2115163.2011694e-05-6.06-6.100JPL: Computed at 13:30 April 14th of 2017 Pacific time based on 70 observations spanning 4.9304 days (2010-Oct-11.34885 to 2010-Oct-16.27929). Diameter approximately 0.010 km. from weighted mean H=27.55.
2001 UD5JPL Sentry01142107-210714.086e-08-6.21-6.210JPL: Computed at 01:07 April 11th of 2017 Pacific time based on 31 observations spanning 22.803 days (2001-Oct-19.4807 to 2001-Nov-11.28361). Diameter approximately 0.110 km. from weighted mean H=22.35.
2001 CA21JPL Sentry01142025-207339.3262e-09-3.59-3.610JPL: Computed at 05:44 April 9th of 2017 Pacific time based on 13 observations spanning 1.9210 days (2001-Feb-02.45718 to 2001-Feb-04.37822). Diameter approximately 0.677 km. from weighted mean H=18.49.
2000 SB45JPL Sentry01142074-21131010.000155378409-3.75-4.210JPL: Computed at 12:40 April 10th of 2017 Pacific time based on 18 observations spanning 2.5744 days (2000-Sep-27.27345 to 2000-Sep-29.84786). Diameter approximately 0.046 km. from weighted mean H=24.34.

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 9 October '20

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

2358Grabbed MPEC 2020-T55 - 2020 TP1 - see above
Grabbed MPEC 2020-T56 - 2020 TQ1 - see above
Grabbed MPEC 2020-T57 - 2020 TR1 - see above
Grabbed MPEC 2020-T58 - 2020 TS1 - see above
Grabbed MPEC 2020-T59 - 2020 TT1 - see above
2001Grabbed MPEC 2020-T54 - 2020 TO1 - see above
1705Noted that JPL Sentry has updated its 2020 QN1 risk assessment - see above
Noted that JPL Sentry has removed 2020 TF as an impact risk - see above
Noted that NEODyS has updated its 2020 TH risk assessment - see above
Noted that NEODyS has posted 2020 TW as an impact risk - see above
Grabbed MPEC 2020-T49 - 2020 TG1 - see above
Grabbed MPEC 2020-T50 - 2020 TH1 - see above
Grabbed MPEC 2020-T51 - 2020 TJ1 - see above
Grabbed MPEC 2020-T52 - 2020 TK1 - see above
Grabbed MPEC 2020-T53 - Daily Orbit Update - see above
0430Grabbed MPEC 2020-T48 - 2020 TF1 - see above
0114Noted that JPL Sentry has updated its 2000 SB45 risk assessment - see above
Noted that JPL Sentry has updated its 2001 CA21 risk assessment - see above
Noted that JPL Sentry has updated its 2001 UD5 risk assessment - see above
Noted that JPL Sentry has updated its 2010 TW54 risk assessment - see above
Noted that JPL Sentry has updated its 2015 KH160 risk assessment - see above
Noted that JPL Sentry has updated its 2016 TG94 risk assessment - see above
Noted that JPL Sentry has updated its 2019 UL risk assessment - see above
Noted that JPL Sentry has posted 2020 TB1 as an impact risk - see above
Grabbed MPEC 2020-T46 - 2020 TD1 - see above
Grabbed MPEC 2020-T47 - 2020 TE1 - see above