Contents  on 1 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 1 October '20

The MPC's NEO Confirmation Page has 22 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 22 objects listed. Of these, eleven were "one nighters." The Tracking News counted a total of 29 listings on the NEOCP on this day.

New MPECs  on 1 October '20

Minor Planet Electronic Circulars

There were three MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-T03 - "16:26 UT" - 2019 RO4


MPEC 2020-T02 - "16:19 UT" - 2014 UB225


<< DOU on 1 October '20 >>  MPEC 2020-T01 - "12:19 UT" - Daily Orbit Update

Observers  on 1 October '20

A total of 60 observers appeared in this day's MPECs.

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 3 in MPEC 2020-T01 -- 85275, 19764, 159402
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2020-T01 -- 194386
T05ATLAS Haleakala in Hawaii, 90 in MPEC 2020-T01 -- 96744, 90075, 88264, 87684, 87311, 85804, 69230, 68950, 66008, 65690, 54789, 53435, 511808, 503960, 500094, 498066, 497094, 489235, 480824, 470678, 452302, 443837, 428086, 420302, 382625, 376707, 357058, 354952, 333889, 316695, 30825, 303262, 302830, 285990, 271480, 27031, 256412, 242216, 23714, 23187, 20826, 20460, 19764, 190208, 17182, 16834, 163902, 163081, 163014, 162173, 159856, 159402, 15817, 154302, 145656, 144411, 141052, 140288, 137799, 136900, 11405, 106538, 105140, 8566, 8035, 8014, 7977, 7025, 6239, 6053, 5645, 5587, 5143, 4953, 4947, 4503, 4450, 4197, 4055, 3908, 3753, 3752, 3691, 3671, 3288, 3200, 2212, 1865, 1036, 887
T08ATLAS Mauna Loa in Hawaii, 124 in MPEC 2020-T01 -- 2011 GO27, 2001 SG286, 2000 TU28, 99935, 96744, 90147, 90075, 88264, 87684, 87311, 85804, 69230, 68359, 66272, 66146, 66008, 65690, 54789, 53435, 52768, 511808, 503960, 500094, 498066, 497094, 489235, 480824, 477885, 474554, 474179, 470678, 465166, 452302, 443837, 428086, 420302, 415027, 414903, 401954, 382625, 380359, 376848, 376707, 36284, 357058, 354952, 316695, 31669, 30825, 303262, 302830, 285990, 27031, 256412, 253106, 242216, 23714, 23187, 217430, 21088, 20826, 19764, 190208, 190166, 17182, 169675, 16834, 163902, 163081, 163014, 162911, 162173, 159928, 159856, 159402, 15817, 154302, 153249, 145656, 144411, 141052, 140333, 140288, 137799, 137108, 136900, 12538, 115052, 11405, 106538, 105140, 10115, 8566, 8035, 8014, 7977, 7025, 6239, 6053, 5836, 5786, 5645, 5587, 5143, 4953, 4947, 4503, 4450, 4197, 4055, 3908, 3753, 3752, 3691, 3671, 3288, 3200, 2368, 2212, 1865, 1685, 1036, 887, 433
L54Berthelot Obs., 1 in MPEC 2020-T01 -- 136900
L65Bredenkamp Obs., 3 in MPEC 2020-T01 -- 420302, 162173, 159402
U63Burnt Tree Hill Obs., 3 in MPEC 2020-T01 -- 2020 MZ, 285990, 162173
X74Campo dos Amarais Obs., 3 in MPEC 2020-T01 -- 505657, 169675, 6569
Z36Cancelada Obs., 1 in MPEC 2020-T01 -- 36284
160Castelmartini Obs. in Italy, 43 in MPEC 2020-T01 -- 2009 VY25, 96744, 90075, 87684, 85804, 69230, 66008, 65690, 52750, 470678, 470510, 468741, 468448, 467963, 420302, 385343, 382625, 378610, 347813, 303262, 285990, 257838, 248083, 24445, 171819, 16834, 163694, 163348, 163081, 162173, 162117, 154244, 145656, 136900, 105140, 7888, 5587, 4953, 3753, 2100, 1943, 1863, 433
703Catalina Sky Survey (CSS) in Arizona, 69 in MPEC 2020-T01 -- 99935, 96744, 90147, 90075, 87684, 69230, 68950, 66146, 66008, 65690, 53435, 523633, 503960, 497094, 488693, 480824, 474179, 470678, 443837, 420302, 414903, 376848, 357058, 340666, 325395, 31669, 30825, 305090, 303262, 285990, 276274, 256412, 241596, 23714, 23187, 217430, 21088, 19764, 17182, 163081, 162173, 159856, 159402, 15817, 145656, 143678, 141851, 140288, 10115, 8567, 8566, 8035, 7350, 7025, 6239, 5645, 5143, 4953, 4486, 4450, 4055, 3691, 3288, 3200, 2368, 2212, 1943, 887, 433
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2020-T01 -- 8566
W84!program code "!" (10) via DECam in Chile, 3 in MPEC 2020-T01 -- 53435, 162781, 4957
W84&program code "&" (15) via DECam in Chile, 1 in MPEC 2020-T01 -- 431760
G371program code 1 via Discovery Channel Telescope (DCT) in Arizona, 2 in MPECs 2020-T02 & 2020-T03 -- 2019 RO4, 2014 UB225
N31Eden Obs., 1 in MPEC 2020-T01 -- 136900
J043program code 3 via ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-T01 -- 17182
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2020-T01 -- 65803
K83Forti Obs., 3 in MPEC 2020-T01 -- 2020 SG1, 2001 SG286, 105140
W46Foxfire Village Obs., 5 in MPEC 2020-T01 -- 2020 QU6, 420302, 382625, 159402, 3691
E89Geyserland Obs. in New Zealand, 9 in MPEC 2020-T01 -- 87684, 20826, 169675, 145656, 137799, 106538, 6569, 5645, 4055
K88GINOP-KHK in Hungary, 16 in MPEC 2020-T01 -- 99935, 96744, 53435, 452302, 303262, 285990, 27031, 267494, 137062, 10115, 9058, 6239, 5587, 4486, 4450, 2212
U76Glendora Obs., 1 in MPEC 2020-T01 -- 159402
U55Golden Ears Obs., 3 in MPEC 2020-T01 -- 163902, 141052, 136900
A17Guidestar Obs. in Germany, 14 in MPEC 2020-T01 -- 2020 SS5, 2020 PD1, 2016 ED85, 2013 GY7, 2012 SA22, 488693, 441304, 435404, 414903, 408982, 376848, 340666, 285990, 141851
P87Hirao Obs., 1 in MPEC 2020-T01 -- 162173
L63HOB Obs., 4 in MPEC 2020-T01 -- 90075, 420302, 285990, 136900
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-T01 -- 69230
C401program code 1 via Kuban State Univ. Obs. in Russia, 4 in MPEC 2020-T01 -- 420302, 19764, 159402, 887
Z43Landehen Obs., 4 in MPEC 2020-T01 -- 420302, 382625, 285990, 136900
130Lumezzane Obs. in Italy, 15 in MPEC 2020-T01 -- 85804, 69230, 382625, 363069, 20460, 19764, 163081, 145656, 140288, 8035, 5143, 4947, 3752, 3288, 1865
K38M57 Obs. in Italy, 1 in MPEC 2020-T01 -- 2020 PD1
W92MASTER OAFA Obs., 8 in MPEC 2020-T01 -- 87684, 53435, 19764, 159402, 15817, 4953, 4055, 3691
L52MASTER Tavrida, 11 in MPEC 2020-T01 -- 69230, 65690, 217430, 19764, 159402, 145656, 144411, 5143, 4503, 3691, 433
K95MASTER-II Sutherland in South Africa, 10 in MPEC 2020-T01 -- 96744, 87684, 65690, 53435, 498066, 376707, 23714, 159402, 4055, 3691
474Mt. John Obs. in New Zealand, 1 in MPEC 2020-T01 -- 528284
G96Mt. Lemmon Survey (MLS) in Arizona, 146 in MPEC 2020-T01 -- 2020 LH1, 2016 ED85, 2014 LQ26, 2007 TG8, 2007 SV2, 2004 QD17, 99935, 96744, 96536, 87684, 87311, 85804, 85182, 69230, 68359, 68350, 68348, 67367, 66008, 65717, 65690, 53430, 503960, 497135, 488640, 488486, 482718, 482505, 481394, 480824, 478574, 476438, 474613, 474179, 470678, 467963, 465166, 452302, 443837, 441304, 420302, 419022, 415027, 414903, 41440, 413192, 413002, 410622, 408752, 407653, 407338, 404108, 401954, 392211, 388945, 382625, 380128, 376848, 374851, 363069, 357058, 354952, 353190, 347634, 343166, 315020, 30997, 304153, 303262, 285838, 276274, 27031, 27002, 267494, 25916, 256412, 244670, 23714, 236716, 230979, 220839, 219021, 217430, 19764, 194126, 189630, 18736, 173689, 172034, 17182, 16960, 163683, 163373, 163081, 162980, 162913, 162463, 162269, 162210, 162173, 159929, 15817, 154631, 154302, 154275, 154269, 153306, 145656, 144861, 144411, 143678, 143624, 143409, 141851, 141052, 140333, 140288, 140158, 137062, 136849, 136773, 115052, 106538, 10165, 10115, 9058, 8035, 8014, 6239, 5836, 5143, 4953, 4688, 4503, 4486, 4450, 4055, 3360, 3288, 2212, 2201, 1917, 1685, 1580, 887, 433
Z80Northolt Branch Obs. in England, 2 in MPEC 2020-T01 -- 382625, 285990
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-T01 -- 420302
C23Olmen Obs. in Belgium, 1 in MPEC 2020-T01 -- 159402
557Ondrejov Obs. in the Czech Republic, 2 in MPEC 2020-T01 -- 420302, 136900
J43Oukaimeden Obs. in Morocco, 6 in MPEC 2020-T01 -- 87311, 420302, 354952, 23187, 136900, 3288
C27Pallerols Obs. in Spain, 2 in MPEC 2020-T01 -- 36284, 285990
F51Pan-STARRS 1 (PS1) in Hawaii, 112 in MPEC 2020-T01 -- 98943, 97725, 96744, 90416, 86829, 69230, 68359, 66008, 65803, 65717, 65690, 54789, 523810, 504711, 503960, 497094, 482798, 482718, 480824, 477492, 477051, 474613, 474179, 455407, 443837, 436324, 429746, 423747, 420302, 417264, 417211, 41440, 408752, 407653, 407338, 399774, 392211, 388838, 381564, 374851, 374267, 361123, 357058, 354952, 354127, 353190, 337558, 315020, 30997, 304153, 303262, 302830, 301011, 284422, 27002, 256412, 252399, 250706, 244670, 23714, 236716, 230979, 219021, 217430, 215167, 19764, 197588, 190788, 18736, 173689, 17181, 170891, 163373, 163051, 162913, 162900, 162635, 162173, 159402, 154631, 154275, 154269, 153591, 153306, 152828, 145656, 143409, 140288, 139211, 137799, 137120, 137099, 136849, 136839, 136617, 106538, 100756, 8201, 8035, 7025, 5143, 4953, 4688, 4503, 4341, 4197, 3691, 3671, 3200, 2201, 1221, 887
F52Pan-STARRS 2 (PS2) in Hawaii, 105 in MPEC 2020-T01 -- 96744, 88264, 87684, 87311, 69230, 68359, 65717, 53435, 503960, 497135, 497117, 497094, 491567, 488640, 483547, 480824, 478574, 477492, 476438, 470678, 452302, 443837, 441304, 435404, 435302, 417211, 415027, 414903, 414586, 413002, 410622, 408982, 408752, 407653, 407338, 404108, 388945, 376707, 363069, 361123, 357058, 354127, 353190, 347634, 333755, 315020, 304153, 303262, 285990, 285838, 276274, 27002, 256670, 256412, 23714, 236716, 23187, 230979, 22753, 219021, 217430, 19764, 194126, 190788, 189630, 173689, 17182, 171819, 170891, 16960, 163373, 162980, 162173, 159928, 15817, 154631, 154275, 154269, 153306, 152756, 152685, 145656, 143624, 143409, 142348, 140333, 140288, 140158, 136773, 11398, 10115, 9058, 8201, 8035, 7025, 6239, 5879, 5143, 4486, 3671, 3288, 2212, 2201, 1865, 887
V93Pin Oak Obs., 7 in MPEC 2020-T01 -- 2020 PC5, 2013 PY6, 66008, 420302, 159402, 136900, 3691
122Pises Obs. in France, 5 in MPEC 2020-T01 -- 85804, 420302, 382625, 363069, 115052
D29Purple Mtn. Obs. Xuyi Station in China, 14 in MPEC 2020-T01 -- 65717, 474613, 404108, 315020, 303262, 285990, 17182, 162173, 140288, 115052, 8035, 5143, 4503, 3288
L04ROASTERR-1 in Romania, 2 in MPEC 2020-T01 -- 420302, 105140
X89Rocca Obs., 1 in MPEC 2020-T01 -- 887
C95SATINO-1 in France, 1 in MPEC 2020-T01 -- 2020 OR4
W884G. Gasparovic in Croatia via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-T01 -- 1036
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-T01 -- 517103
Y00SONEAR in Brazil, 1 in MPEC 2020-T01 -- 85275
W34Squirrel Valley Obs. in North Carolina, 3 in MPEC 2020-T01 -- 2001 SG286, 415027, 382625
I52Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2020-T01 -- 2019 SV4
W33Transit Dreams Obs., 4 in MPEC 2020-T01 -- 162173, 6239, 4503, 4450
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-T01 -- 2013 MS11
G23Vulpecula Obs., 2 in MPEC 2020-T01 -- 19764, 159402
G33Wickede Obs. in Germany, 1 in MPEC 2020-T01 -- 66008
C51WISE in Earth polar orbit, 1 in MPEC 2020-T01 -- 2020 LC1
I41Zwicky Transient Facility (ZTF) in southern California, 73 in MPEC 2020-T01 -- 2020 PX4, 2020 OG4, 2017 XL62, 99935, 88188, 85804, 85182, 67367, 66146, 66008, 497135, 488640, 474613, 435404, 415029, 415027, 414903, 413192, 413002, 404108, 380359, 380128, 354663, 343158, 322763, 315020, 304153, 283729, 27031, 27002, 267494, 25916, 256412, 24761, 23183, 220839, 21374, 209924, 19764, 19356, 190208, 173689, 17188, 16834, 16816, 163081, 162463, 162173, 15817, 154302, 154276, 153306, 145656, 141851, 137108, 12711, 12538, 10860, 10115, 5836, 5786, 5131, 4947, 4544, 4503, 3691, 3671, 2368, 1943, 1865, 1685, 887, 433
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 October '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2359 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 SN6NEODyS17002043-21172512.46e-05-6.69-7.730NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2020-09-27.306 to 2020-09-30.353."
2020 SY4JPL Sentry17002061-211343.08062e-06-6.72-6.800JPL: Computed at 07:00 Sept. 28th Pacific time based on 25 observations spanning 5.4941 days (2020-Sep-22.38159 to 2020-Sep-27.875645). Diameter approximately 0.011 km. from weighted mean H=27.38.
2020 SU4NEODyS1700211231.01e-07-6.78-6.810NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2020-09-23.507 to 2020-09-29.501."
2020 OR4JPL Sentry17002093-2117157.93505e-06-5.33-5.620JPL: Computed at 07:05 today Pacific time based on 41 observations spanning 6.5842 days (2020-Jul-20.399226 to 2020-Jul-26.983404). Diameter approximately 0.025 km. from weighted mean H=25.63.
NEODyS17002093-2117191.03e-05-5.23-5.530NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2020-07-20.400 to 2020-07-26.984."
2019 TN5JPL Sentry17002041-204111.587e-07-8.07-8.070JPL: Computed at 19:59 Oct. 9th of 2019 Pacific time based on 14 observations spanning 3.2267 days (2019-Oct-06.36132 to 2019-Oct-09.58799). Diameter approximately 0.007 km. from weighted mean H=28.41.
2016 NP56JPL Sentry17002024-2113174.5303499e-06-6.04-6.270JPL: Computed at 13:46 April 7th of 2017 Pacific time based on 15 observations spanning .22064 days (2016-Jul-09.20499 to 2016-Jul-09.42563). Diameter approximately 0.019 km. from weighted mean H=26.21.
2015 AN193NEODyS17002027-2106142.93e-09-4.37-4.550NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2015-01-14.392 to 2015-01-19.387."
2014 TLJPL Sentry17002072-211486.335215e-06-6.80-6.980JPL: Computed at 17:15 April 11th of 2017 Pacific time based on 59 observations spanning 19.143 days (2014-Oct-02.2672 to 2014-Oct-21.409814). Diameter approximately 0.009 km. from weighted mean H=27.82.
2013 TP4JPL Sentry17002026-202614.917e-05-4.23-4.230JPL: Computed at 11:57 April 11th of 2017 Pacific time based on 23 observations spanning 9.9136 days (2013-Oct-02.389801 to 2013-Oct-12.30343). Diameter approximately 0.011 km. from weighted mean H=27.52.
2009 TBJPL Sentry17002021-2112385.8853335e-06-5.96-6.300JPL: Computed at 07:54 April 7th of 2017 Pacific time based on 12 observations spanning .10702 days (2009-Oct-02.2061 to 2009-Oct-02.31312). Diameter approximately 0.005 km. from weighted mean H=29.19.

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 1 October '20

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

1700Noted that JPL Sentry has updated its 2009 TB risk assessment - see above
Noted that JPL Sentry has updated its 2013 TP4 risk assessment - see above
Noted that JPL Sentry has updated its 2014 TL risk assessment - see above
Noted that NEODyS has posted 2015 AN193 as an impact risk - see above
Noted that JPL Sentry has updated its 2016 NP56 risk assessment - see above
Noted that JPL Sentry has updated its 2019 TN5 risk assessment - see above
Noted that JPL Sentry has updated its 2020 OR4 risk assessment - see above
Noted that NEODyS has updated its 2020 OR4 risk assessment - see above
Noted that NEODyS has updated its 2020 SN6 risk assessment - see above
Noted that NEODyS has updated its 2020 SU4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 SY4 risk assessment - see above
Grabbed MPEC 2020-T01 - Daily Orbit Update - see above
Grabbed MPEC 2020-T02 - 2014 UB225 - see above
Grabbed MPEC 2020-T03 - 2019 RO4 - see above