Contents  on 24 November '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 24 November '20

The MPC's NEO Confirmation Page has 39 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 39 objects listed. Of these, fifteen were "one nighters." So far The Tracking News has counted a total of 55 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 24 November '20

Minor Planet Electronic Circulars

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


MPEC 2020-W147 - "23:46 UT" - 2020 WE4


MPEC 2020-W146 - "20:47 UT" - 2020 WC4


MPEC 2020-W145 - "20:44 UT" - 2020 WB4


MPEC 2020-W144 - "18:47 UT" - 2020 WA4


MPEC 2020-W143 - "18:46 UT" - 2020 WZ3


MPEC 2020-W142 - "18:45 UT" - 2020 WY3


MPEC 2020-W141 - "18:43 UT" - 2020 WX3


MPEC 2020-W140 - "17:28 UT" - 2020 WW3


MPEC 2020-W139 - "17:18 UT" - 2020 WV3


MPEC 2020-W138 - "16:31 UT" - 2002 CN15


MPEC 2020-W137 - "12:59 UT" - 2020 WU3


MPEC 2020-W136 - "12:58 UT" - 2020 WT3


<< DOU on 24 November '20 >>  MPEC 2020-W135 - "12:07 UT" - Daily Orbit Update

Observers  on 24 November '20

A total of 40 observers appear in today's MPECs.

CodeObserver / observatory
U71AHS Obs., 1 in MPEC 2020-W135 -- 2020 ST1
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2020-W135, 2020-W137 & 2020-W138 -- 2020 WU3, 2020 VV2, 2020 VR3, 2020 HE2, 2002 CN15
T05ATLAS Haleakala in Hawaii, 6 in MPEC 2020-W135 -- 2017 WJ16, 2002 GZ8, 88188, 53435, 482505, 163902
Q68Blue Mountains Obs. in New South Wales, 1 in MPEC 2020-W135 -- 887
160Castelmartini Obs. in Italy, 11 in MPEC 2020-W135 -- 2020 TG4, 2020 TG3, 2020 ST1, 2019 XS, 2013 UX14, 2002 TS67, 1998 WA2, 89355, 66272, 482505, 241596
703Catalina Sky Survey (CSS) in Arizona, 18 in MPECs 2020-W135 & 2020-W140 -- 2020 WW3, 2020 WP, 2020 TG3, 2020 ST1, 2004 LU3, 88264, 68359, 65717, 506459, 450263, 23183, 185716, 138852, 7753, 5587, 4055, 1943, 1685
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 6 in MPECs 2020-W135, 2020-W136, 2020-W138 & 2020-W142 -- 2020 WY3, 2020 WT3, 2020 VR3, 2020 VD4, 2020 PB1, 2002 CN15
470Ceccano Obs. in Italy, 1 in MPEC 2020-W135 -- 2020 SO
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 35 in MPEC 2020-W135 -- 2020 WZ, 2020 WY, 2020 WX, 2020 WU1, 2020 WP, 2020 WM, 2020 WG, 2020 WF2, 2020 WE2, 2020 WE1, 2020 VY2, 2020 VX5, 2020 VX1, 2020 VV, 2020 VT5, 2020 VT, 2020 VQ6, 2020 VQ5, 2020 VK5, 2020 VK4, 2020 VK1, 2020 VH4, 2020 VG3, 2020 VF2, 2020 VE1, 2020 VD6, 2020 VB, 2020 UV3, 2020 UV1, 2020 UH4, 2020 UF6, 2020 UE4, 2020 TS7, 2020 TP3, 2020 QF6
734Farpoint Obs. in Kansas, 1 in MPEC 2020-W137 -- 2020 WU3
203GiaGa Obs. in Italy, 1 in MPEC 2020-W147 -- 2020 WE4
K88GINOP-KHK in Hungary, 5 in MPEC 2020-W135 -- 2020 WB2, 2018 XZ1, 507716, 489885, 417217
L63HOB Obs., 3 in MPEC 2020-W135 -- 2020 WK2, 2017 VT12, 345705
2461program code 1 via KLENOT in the Czech Republic, 1 in MPEC 2020-W146 -- 2020 WC4
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-W135 -- 159402
V39LCO McDonald Obs. B in Texas, 1 in MPEC 2020-W135 -- 2020 SO
W92MASTER OAFA Obs., 1 in MPEC 2020-W135 -- 185716
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2020-W135 -- 2020 WB2, 2017 GO6, 2002 TS67
V01Mountainville Obs. in Utah, 5 in MPEC 2020-W135 -- 2020 WZ2, 2020 WP, 2020 WJ3, 2020 WA3, 2020 VF6
G96Mt. Lemmon Survey (MLS) in Arizona, 64 in MPECs 2020-W135, 2020-W136, 2020-W137, 2020-W138, 2020-W139, 2020-W140, 2020-W141, 2020-W142, 2020-W143, 2020-W144, 2020-W145, 2020-W146 & 2020-W147 -- 2020 WZ3, 2020 WY3, 2020 WX3, 2020 WW3, 2020 WV3, 2020 WV, 2020 WU3, 2020 WT3, 2020 WK, 2020 WE4, 2020 WC4, 2020 WB4, 2020 WA4, 2020 VU4, 2020 VQ3, 2020 VF6, 2020 VA4, 2020 UN2, 2020 UG7, 2020 UD, 2020 TN7, 2020 TL10, 2020 TJ8, 2020 SF3, 2020 SE4, 2020 RX3, 2016 LY47, 2016 ED85, 2015 WN1, 2015 EO61, 2015 BF4, 2014 XG8, 2014 WG365, 2014 UR116, 2014 HM187, 2012 LD1, 2009 WD11, 2006 UL185, 2005 TF49, 2004 UB, 2003 XM, 2002 CN15, 1998 MR24, 96315, 66272, 509520, 465749, 452307, 438902, 380929, 380321, 352143, 302523, 213053, 194126, 163364, 162210, 154007, 152978, 143404, 10860, 8014, 5836, 2212
K74Muensterschwarzach Obs. in Germany, 4 in MPEC 2020-W135 -- 2020 SO, 2017 VT12, 2015 BF4, 2013 PY6
Z80Northolt Branch Obs. in England, 2 in MPEC 2020-W135 -- 2017 WJ16, 2002 GZ8
J43Oukaimeden Obs. in Morocco, 3 in MPEC 2020-W135 -- 2017 GO6, 194126, 6239
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2020-W135 -- 2020 WO3
F52Pan-STARRS 2 in Hawaii, 1 in MPEC 2020-W135 -- 2020 WO3
W16Pleasant Groves Obs., 3 in MPEC 2020-W135 -- 2020 OW3, 482505, 428086
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 2 in MPEC 2020-W135 -- 2020 UF7, 2020 SO
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-W135 -- 99942
C95SATINO-1 in France, 1 in MPEC 2020-W135 -- 3908
204Schiaparelli Obs. in Italy, 16 in MPECs 2020-W135, 2020-W139, 2020-W141 & 2020-W147 -- 2020 WX3, 2020 WV3, 2020 WK2, 2020 WH3, 2020 WG2, 2020 WE4, 2020 WE2, 2020 VX4, 2020 VS4, 2020 VR2, 2020 VQ2, 2020 VP4, 2020 VG4, 2020 VC3, 2020 UZ5, 2020 UP
Q21Southern Utsunomiya in Japan, 1 in MPEC 2020-W135 -- 162173
691Spacewatch 0.9m telescope in Arizona, 6 in MPECs 2020-W135 & 2020-W145 -- 2020 WQ1, 2020 WE1, 2020 WB4, 2020 US2, 2020 UF7, 2010 BH2
291Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2020-W135 -- 2020 WB3, 2020 VZ5, 2017 XA1, 525484, 422638
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2020-W135 & 2020-W137 -- 2020 WU3, 2008 CZ118
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-W137 -- 2020 WU3
I52Steward Obs. Mt. Lemmon Station in Arizona, 27 in MPECs 2020-W135, 2020-W137, 2020-W139, 2020-W140, 2020-W141, 2020-W142, 2020-W143, 2020-W144, 2020-W145, 2020-W146 & 2020-W147 -- 2020 WZ3, 2020 WY3, 2020 WY2, 2020 WX3, 2020 WW3, 2020 WV3, 2020 WU3, 2020 WO, 2020 WM, 2020 WK2, 2020 WH1, 2020 WG, 2020 WF1, 2020 WE4, 2020 WE2, 2020 WE1, 2020 WC4, 2020 WC2, 2020 WB4, 2020 WA4, 2020 VZ5, 2020 VX5, 2020 VQ5, 2020 VK1, 2020 VF6, 2020 VF2, 2020 UZ5
W33Transit Dreams Obs., 5 in MPEC 2020-W135 -- 2017 WJ16, 482505, 474179, 415029, 36284
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-W135 -- 2018 RF5
L01Visnjan Obs. in Croatia, 8 in MPECs 2020-W137, 2020-W138, 2020-W140, 2020-W141, 2020-W142, 2020-W145, 2020-W146 & 2020-W147 -- 2020 WY3, 2020 WX3, 2020 WW3, 2020 WU3, 2020 WE4, 2020 WC4, 2020 WB4, 2002 CN15
I41Zwicky Transient Facility in southern California, 1 in MPEC 2020-W135 -- 2017 WJ16
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 November '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 WZ3JPL Sentry21012033-21202388.8672557e-06-5.86-6.600JPL: Computed at 12:25 today Pacific time based on 18 observations spanning .96584 days (2020-Nov-23.352624 to 2020-Nov-24.31846). Diameter approximately 0.020 km. from weighted mean H=26.10.
2020 WB3JPL Sentry18002024-2117218.2353491e-06-1.68-1.680JPL: Computed at 06:19 today Pacific time based on 44 observations spanning 3.0276 days (2020-Nov-21.060876 to 2020-Nov-24.08852). Diameter approximately 0.280 km. from weighted mean H=20.38.
NEODyS18002024-2116207.59e-06-1.70-1.70NEODyS: "Based on 44 optical observations (of which 2 are rejected as outliers) from 2020-11-21.062 to 2020-11-24.089."
2020 WE1JPL Sentry18002075-208022.5359e-09-6.96-7.000JPL: Computed at 06:20 today Pacific time based on 79 observations spanning 7.8827 days (2020-Nov-16.390213 to 2020-Nov-24.272863). Diameter approximately 0.120 km. from weighted mean H=22.28.
NEODyS1800207511.26e-10-8.25-8.250NEODyS: "Based on 81 optical observations (of which 2 are rejected as outliers) from 2020-11-16.391 to 2020-11-24.274."
2020 VA4JPL Sentry18002096-211441.379495e-06-7.48-7.740JPL: Computed at 06:08 today Pacific time based on 56 observations spanning 10.936 days (2020-Nov-12.282205 to 2020-Nov-23.218131). Diameter approximately 0.011 km. from weighted mean H=27.41.
NEODyS18002096-211574.22e-06-6.97-7.180NEODyS: "Based on 59 optical observations (of which 3 are rejected as outliers) from 2020-11-12.283 to 2020-11-23.219."
2020 VVJPL Sentry18002033-21092270.0100364244611-2.80-2.840JPL: Computed at 06:14 today Pacific time based on 62 observations spanning 17.984 days (2020-Nov-05.148108 to 2020-Nov-23.13216). Diameter approximately 0.012 km. from weighted mean H=27.28.
NEODyS18002033-212010461.43e-02-2.65-2.69n/aNEODyS: "Based on 63 optical observations (of which 1 are rejected as outliers) from 2020-11-05.149 to 2020-11-23.133."
2018 RF5JPL Sentry18002103-211522.344065e-06-7.10-7.100JPL: Computed at 05:59 today Pacific time based on 57 observations spanning 26.438 days (2018-Sep-10.09301 to 2018-Oct-06.531173). Diameter approximately 0.011 km. from weighted mean H=27.38.
NEODyS1800210313.21e-06-6.99-6.990NEODyS: "Based on 57 optical observations (of which 0 are rejected as outliers) from 2018-09-10.094 to 2018-10-06.532."
2017 WT28JPL Sentry18002083-2119720.01128081228-3.86-3.880JPL: Computed at 07:44 Aug. 20th Pacific time based on 28 observations spanning 19.004 days (2017-Nov-27.26174 to 2017-Dec-16.265521). Diameter approximately 0.008 km. from weighted mean H=28.08.
2017 WE28JPL Sentry18002039-2078112.033416e-06-6.44-6.670JPL: Computed at 10:17 April 18th of 2019 Pacific time based on 33 observations spanning 13.937 days (2017-Nov-27.12601 to 2017-Dec-11.062792). Diameter approximately 0.015 km. from weighted mean H=26.72.
2007 YMJPL Sentry18002020-21152474.3315282e-06-5.71-6.560JPL: Computed at 20:16 April 8th of 2017 Pacific time based on 12 observations spanning .12805 days (2007-Dec-17.39661 to 2007-Dec-17.52466). Diameter approximately 0.018 km. from weighted mean H=26.34.
2007 KO4JPL Sentry18002022-21163154.2967249e-06-4.32-5.130JPL: Computed at 18:43 April 11th of 2017 Pacific time based on 14 observations spanning 3.0066 days (2007-May-22.26517 to 2007-May-25.27172). Diameter approximately 0.075 km. from weighted mean H=23.27.

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 24 November '20

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

2358Grabbed MPEC 2020-W147 - 2020 WE4 - see above
2101Noted that JPL Sentry has posted 2020 WZ3 as an impact risk - see above
Grabbed MPEC 2020-W145 - 2020 WB4 - see above
Grabbed MPEC 2020-W146 - 2020 WC4 - see above
1900Grabbed MPEC 2020-W141 - 2020 WX3 - see above
Grabbed MPEC 2020-W142 - 2020 WY3 - see above
Grabbed MPEC 2020-W143 - 2020 WZ3 - see above
Grabbed MPEC 2020-W144 - 2020 WA4 - see above
1800Noted that JPL Sentry has updated its 2007 KO4 risk assessment - see above
Noted that JPL Sentry has updated its 2007 YM risk assessment - see above
Noted that JPL Sentry has updated its 2017 WE28 risk assessment - see above
Noted that JPL Sentry has updated its 2017 WT28 risk assessment - see above
Noted that JPL Sentry has updated its 2018 RF5 risk assessment - see above
Noted that NEODyS has updated its 2018 RF5 risk assessment - see above
Noted that JPL Sentry has updated its 2020 VA4 risk assessment - see above
Noted that NEODyS has updated its 2020 VA4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 VV risk assessment - see above
Noted that NEODyS has updated its 2020 VV risk assessment - see above
Noted that JPL Sentry has updated its 2020 WB3 risk assessment - see above
Noted that NEODyS has updated its 2020 WB3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 WE1 risk assessment - see above
Noted that NEODyS has updated its 2020 WE1 risk assessment - see above
Grabbed MPEC 2020-W135 - Daily Orbit Update - see above
Grabbed MPEC 2020-W136 - 2020 WT3 - see above
Grabbed MPEC 2020-W137 - 2020 WU3 - see above
Grabbed MPEC 2020-W138 - 2002 CN15 - see above
Grabbed MPEC 2020-W139 - 2020 WV3 - see above
Grabbed MPEC 2020-W140 - 2020 WW3 - see above