Contents  on 28 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 28 October '20

The MPC's NEO Confirmation Page has 32 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 32 objects listed. Of these, 23 were "one nighters." So far The Tracking News has counted a total of 43 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 28 October '20

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been eight MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-U261 - "23:18 UT" - Comet C/2020 U5 (Panstarrs)


MPEC 2020-U260 - "23:00 UT" - Comet C/2020 U4 (Panstarrs)


MPEC 2020-U259 - "19:39 UT" - 2020 UQ6


MPEC 2020-U258 - "13:16 UT" - 2020 UP6


MPEC 2020-U257 - "13:13 UT" - 2020 UO6


<< DOU on 28 October '20 >>  MPEC 2020-U256 - "12:08 UT" - Daily Orbit Update


MPEC 2020-U255 - "06:57 UT" - 2020 UN6


MPEC 2020-U254 - "02:25 UT" - Comet C/2020 U3 (Rankin)

Observers  on 28 October '20

A total of 46 observers appear in today's MPECs.

CodeObserver / observatory
W94AMACS1 in Chile, 1 in MPEC 2020-U255 -- 2020 UN6
L54Berthelot Obs., 1 in MPEC 2020-U256 -- 4503
B96Brixiis Obs. in Belgium, 1 in MPEC 2020-U254 -- C/2020 U3
160Castelmartini Obs. in Italy, 1 in MPEC 2020-U256 -- 477524
703Catalina Sky Survey (CSS) in Arizona, 20 in MPEC 2020-U256 -- 2020 UX4, 2020 UN3, 2020 TY1, 2020 RV5, 2013 PY6, 2004 LU3, 68359, 65717, 53435, 480824, 414903, 194126, 162173, 152978, 9058, 5587, 4503, 4055, 3671, 2212
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 13 in MPEC 2020-U256 -- 2020 UZ5, 2020 UW2, 2020 UW1, 2020 UN3, 2020 UM3, 2020 UL3, 2020 UD, 2020 UB2, 2020 TY1, 2020 TS5, 2020 TK5, 2020 TH5, 2020 SE4
A77Chante-Perdrix Obs. in France, 1 in MPEC 2020-U261 -- C/2020 U5
970Chelmsford Obs. in England, 1 in MPEC 2020-U259 -- 2020 UQ6
Z99Clixby Obs. in England, 7 in MPECs 2020-U256, 2020-U257, 2020-U259 & 2020-U261 -- 2020 UQ6, 2020 UO6, C/2020 U5, 2005 JT108, 2004 US1, 2002 GZ8, 2000 PQ27
W84!program code "!" (10) via DECam in Chile, 2 in MPEC 2020-U256 -- 23714, 8035
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2020-U257 & 2020-U259 -- 2020 UQ6, 2020 UO6
K83Forti Obs., 2 in MPECs 2020-U256 & 2020-U259 -- 2020 UQ6, 2004 UR1
W46Foxfire Village Obs., 4 in MPEC 2020-U256 -- 90075, 376848, 30825, 154302
X31Galilei Obs., 1 in MPEC 2020-U259 -- 2020 UQ6
K88GINOP-KHK in Hungary, 2 in MPEC 2020-U256 -- 2007 TG8, 452302
J95Great Shefford Obs. in England, 4 in MPECs 2020-U255, 2020-U256, 2020-U257 & 2020-U259 -- 2020 UQ6, 2020 UO6, 2020 UN6, 2020 UJ4
N51GROWTH India Telescope, 4 in MPECs 2020-U254, 2020-U259, 2020-U260 & 2020-U261 -- 2020 UQ6, C/2020 U5, C/2020 U4, C/2020 U3
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 3 in MPECs 2020-U254, 2020-U260 & 2020-U261 -- C/2020 U5, C/2020 U4, C/2020 U3
I894M. Suzuki in Japan via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2020-U259 -- 2020 UQ6
I896program code 6 via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2020-U259 -- 2020 UQ6
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-U259 -- 2020 UQ6
585Kiev Comet Station in Ukraine, 1 in MPEC 2020-U259 -- 2020 UQ6
381Kiso Obs. in Japan, 1 in MPEC 2020-U259 -- 2020 UQ6
G96Mt. Lemmon Survey (MLS) in Arizona, 28 in MPECs 2020-U254, 2020-U256, 2020-U257, 2020-U258, 2020-U260 & 2020-U261 -- 2020 UP6, 2020 UO6, 2020 UA3, C/2020 U5, C/2020 U4, C/2020 U3, 2020 TG3, 2020 ML3, 2020 LA2, 2018 VJ1, 2017 VJ2, 2016 FY14, 2015 BF4, 2013 UX14, 2013 MX5, 2012 XE17, 2008 UU95, 2003 UG22, 1998 MR24, 53435, 474179, 380321, 351331, 241596, 21374, 154302, 140333, 1580
K74Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-U259 -- 2020 UQ6
0895N.V. Maigurova via Nikolaev Obs. in Ukraine, 3 in MPEC 2020-U256 -- 53435, 500094, 11405
Z80Northolt Branch Obs. in England, 5 in MPECs 2020-U256, 2020-U257 & 2020-U259 -- 2020 UQ6, 2020 UO6, 2020 TR5, 2020 TD8, 162173
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2020-U254, 2020-U255, 2020-U260 & 2020-U261 -- 2020 UN6, C/2020 U5, C/2020 U4, C/2020 U3
F52Pan-STARRS 2 (PS2) in Hawaii, 4 in MPECs 2020-U254, 2020-U258, 2020-U260 & 2020-U261 -- 2020 UP6, C/2020 U5, C/2020 U4, C/2020 U3
K63Pascoli Obs. in Italy, 2 in MPECs 2020-U255 & 2020-U257 -- 2020 UO6, 2020 UN6
W16Pleasant Groves Obs., 1 in MPEC 2020-U254 -- C/2020 U3
L04ROASTERR-1 in Romania, 1 in MPEC 2020-U259 -- 2020 UQ6
K61Rokycany Obs. in the Czech Republic, 1 in MPEC 2020-U254 -- C/2020 U3
L07Salvatore di Giacomo Obs., 1 in MPEC 2020-U261 -- C/2020 U5
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-U261 -- C/2020 U5
Q11Shinshiro Obs., 1 in MPEC 2020-U261 -- C/2020 U5
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-U261 -- C/2020 U5
G40[program code "[" (25) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-U256 -- 2004 US1
291Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2020-U256 -- 2017 UL7, 2017 TM6, 2017 TA6, 2017 HP3, 2016 EN1
L39Spica Obs., 2 in MPECs 2020-U256 & 2020-U259 -- 2020 UQ6, 2020 UM6
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-U256 -- 418797
I52Steward Obs. Mt. Lemmon Station in Arizona, 34 in MPECs 2020-U254, 2020-U256, 2020-U257 & 2020-U258 -- 2020 UZ, 2020 UX4, 2020 UW2, 2020 UQ2, 2020 UP6, 2020 UO6, 2020 UO4, 2020 UN5, 2020 UN1, 2020 UL3, 2020 UL1, 2020 UG4, 2020 UF6, 2020 UF, 2020 UE6, 2020 UD, 2020 UC5, 2020 UB4, 2020 UB2, 2020 UA5, C/2020 U3, 2020 TY1, 2020 TU5, 2020 TS5, 2020 TR5, 2020 TP3, 2020 TC7, 2020 SH6, 2020 SF3, 2020 SB, 2020 QU6, 2020 PP5, 2020 PK7, 2016 EL84
Z08Telescope Live, 2 in MPECs 2020-U254 & 2020-U260 -- C/2020 U4, C/2020 U3
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-U256 -- 2019 TC2
L01Visnjan Obs. in Croatia, 8 in MPECs 2020-U254, 2020-U255, 2020-U256, 2020-U257, 2020-U259, 2020-U260 & 2020-U261 -- 2020 UQ6, 2020 UO6, 2020 UN6, C/2020 U5, C/2020 U4, C/2020 U3, 2007 UY1, 2007 SR1
718Wiggins Obs. in Utah, 1 in MPEC 2020-U259 -- 2020 UQ6
N88Xingming Obs. #3, 3 in MPECs 2020-U256, 2020-U257 & 2020-U259 -- 2020 UQ6, 2020 UO6, 2020 UM6
I41Zwicky Transient Facility in southern California, 1 in MPEC 2020-U259 -- 2020 UQ6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 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 UO6NEODyS2230211133.05e-05-5.97-6.210NEODyS: "Based on 39 optical observations (of which 3 are rejected as outliers) from 2020-10-27.337 to 2020-10-28.451."
JPL Sentry17002099-211140.0081209064966-3.54-3.540JPL: Computed at 07:24 today Pacific time based on 38 observations spanning 1.1088 days (2020-Oct-27.341505 to 2020-Oct-28.450332). Diameter approximately 0.012 km. from weighted mean H=27.33.
2020 UX4NEODyS22302072-2120263.07e-05-5.12-5.46n/aNEODyS: "Based on 47 optical observations (of which 2 are rejected as outliers) from 2020-10-22.185 to 2020-10-28.189."
JPL Sentry17002074-2120161.877093e-05-5.31-5.700JPL: Computed at 07:08 today Pacific time based on 46 observations spanning 6.0037 days (2020-Oct-22.18386 to 2020-Oct-28.187598). Diameter approximately 0.025 km. from weighted mean H=25.65.
2020 UO4NEODyS22302088-2120651.7e-03-4.99-5.24n/aNEODyS: "Based on 58 optical observations (of which 1 are rejected as outliers) from 2020-10-23.355 to 2020-10-28.219."
JPL Sentry17002088-2120430.0005949858164-5.43-5.580JPL: Computed at 07:33 today Pacific time based on 58 observations spanning 4.8639 days (2020-Oct-23.354363 to 2020-Oct-28.218305). Diameter approximately 0.006 km. from weighted mean H=28.62.
2020 UL3NEODyS22302111-2118142.81e-06-5.02-5.420NEODyS: "Based on 40 optical observations (of which 1 are rejected as outliers) from 2020-10-17.537 to 2020-10-28.467."
JPL Sentry17002111-211892.176706e-06-5.12-5.480JPL: Computed at 07:29 today Pacific time based on 40 observations spanning 10.930 days (2020-Oct-17.535831 to 2020-Oct-28.465939). Diameter approximately 0.079 km. from weighted mean H=23.16.
2020 UA3NEODyS2230R E M O V E D-
2020 TD8NEODyS22302045-2096183.75e-06-6.49-6.860NEODyS: "Based on 78 optical observations (of which 0 are rejected as outliers) from 2020-10-15.323 to 2020-10-27.036."
JPL Sentry17002045-2096133.50708e-06-6.40-6.760JPL: Computed at 07:10 today Pacific time based on 78 observations spanning 11.713 days (2020-Oct-15.322434 to 2020-Oct-27.035254). Diameter approximately 0.014 km. from weighted mean H=26.92.
2020 TK5NEODyS22302052-205894.72e-06-4.48-4.550NEODyS: "Based on 87 optical observations (of which 2 are rejected as outliers) from 2020-10-14.332 to 2020-10-27.167."
JPL Sentry17002039-205663.282193e-06-4.59-4.690JPL: Computed at 07:47 today Pacific time based on 86 observations spanning 12.835 days (2020-Oct-14.331481 to 2020-Oct-27.16655). Diameter approximately 0.063 km. from weighted mean H=23.64.
2020 TY1NEODyS22302098-212062.6e-07-5.71-5.84n/aNEODyS: "Based on 93 optical observations (of which 1 are rejected as outliers) from 2020-10-08.411 to 2020-10-28.239."
JPL Sentry17002098-211332.0729e-07-5.78-5.940JPL: Computed at 07:04 today Pacific time based on 92 observations spanning 19.828 days (2020-Oct-08.410259 to 2020-Oct-28.238568). Diameter approximately 0.100 km. from weighted mean H=22.64.
2020 LVJPL Sentry23002109-211424.9723e-06-5.89-5.910JPL: Computed at 15:38 today Pacific time based on 37 observations spanning 9.1697 days (2020-Jun-14.38305 to 2020-Jun-23.552778) including radar (1 Doppler, 2 delay). Diameter approximately 0.030 km. from weighted mean H=25.27.
2019 TC2NEODyS22302097-2120591.54e-05-6.50-7.24n/aNEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2019-10-05.218 to 2019-10-24.494."
JPL Sentry17002110-2119351.8431632e-05-6.40-7.140JPL: Computed at 07:09 today Pacific time based on 22 observations spanning 19.276 days (2019-Oct-05.21758 to 2019-Oct-24.493128). Diameter approximately 0.009 km. from weighted mean H=27.84.
2018 VCJPL Sentry17002109-211555.44606e-06-6.35-6.440JPL: Computed at 08:24 March 17th of 2019 Pacific time based on 143 observations spanning 36.008 days (2018-Nov-01.24873 to 2018-Dec-07.257089). Diameter approximately 0.019 km. from weighted mean H=26.29.
2017 UL7NEODyS22302041-205424.69e-07-5.62-5.70NEODyS: "Based on 38 optical observations (of which 1 are rejected as outliers) from 2017-10-11.412 to 2017-10-30.180."
JPL Sentry17002041-205423.6213e-07-5.68-5.770JPL: Computed at 07:02 today Pacific time based on 37 observations spanning 18.757 days (2017-Oct-11.422837 to 2017-Oct-30.17957). Diameter approximately 0.045 km. from weighted mean H=24.39.
2017 UL6JPL Sentry17002058-2106234.703432e-05-7.85-8.360JPL: Computed at 21:11 Oct. 27th of 2017 Pacific time based on 15 observations spanning .77410 days (2017-Oct-27.2341 to 2017-Oct-28.008202). Diameter approximately 0.001 km. from weighted mean H=32.03.
2014 HR197JPL Sentry17002020-21121897.37621e-08-7.11-8.050JPL: Computed at 10:48 April 9th of 2017 Pacific time based on 15 observations spanning .95899 days (2014-Apr-24.15618 to 2014-Apr-25.11517). Diameter approximately 0.014 km. from weighted mean H=26.94.
2011 KF36JPL Sentry17002022-210669.922e-10-5.61-5.910JPL: Computed at 09:46 April 8th of 2017 Pacific time based on 9 observations spanning 2.0159 days (2011-May-30.340411 to 2011-Jun-01.356316). Diameter approximately 0.280 km. from weighted mean H=20.43.
2009 WQ25JPL Sentry17002094-209419.290e-08-6.54-6.540JPL: Computed at 16:40 April 9th of 2017 Pacific time based on 27 observations spanning 5.9572 days (2009-Nov-21.16281 to 2009-Nov-27.11998). Diameter approximately 0.055 km. from weighted mean H=23.94.

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 28 October '20

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

2330Grabbed MPEC 2020-U260 - Comet C/2020 U4 (Panstarrs) - see above
Grabbed MPEC 2020-U261 - Comet C/2020 U5 (Panstarrs) - see above
2300Noted that JPL Sentry has updated its 2020 LV risk assessment - see above
2230Noted that NEODyS has updated its 2017 UL7 risk assessment - see above
Noted that NEODyS has updated its 2019 TC2 risk assessment - see above
Noted that NEODyS has updated its 2020 TD8 risk assessment - see above
Noted that NEODyS has updated its 2020 TK5 risk assessment - see above
Noted that NEODyS has updated its 2020 TY1 risk assessment - see above
Noted that NEODyS has removed 2020 UA3 as an impact risk - see above
Noted that NEODyS has updated its 2020 UL3 risk assessment - see above
Noted that NEODyS has updated its 2020 UO4 risk assessment - see above
Noted that NEODyS has posted 2020 UO6 as an impact risk - see above
Noted that NEODyS has updated its 2020 UX4 risk assessment - see above
Grabbed MPEC 2020-U259 - 2020 UQ6 - see above
1700Noted that JPL Sentry has updated its 2009 WQ25 risk assessment - see above
Noted that JPL Sentry has updated its 2011 KF36 risk assessment - see above
Noted that JPL Sentry has updated its 2014 HR197 risk assessment - see above
Noted that JPL Sentry has updated its 2017 UL6 risk assessment - see above
Noted that JPL Sentry has updated its 2017 UL7 risk assessment - see above
Noted that JPL Sentry has updated its 2018 VC risk assessment - see above
Noted that JPL Sentry has updated its 2019 TC2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 TD8 risk assessment - see above
Noted that JPL Sentry has updated its 2020 TK5 risk assessment - see above
Noted that JPL Sentry has updated its 2020 TY1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 UL3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 UO4 risk assessment - see above
Noted that JPL Sentry has posted 2020 UO6 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 UX4 risk assessment - see above
Grabbed MPEC 2020-U255 - 2020 UN6 - see above
Grabbed MPEC 2020-U256 - Daily Orbit Update - see above
Grabbed MPEC 2020-U257 - 2020 UO6 - see above
Grabbed MPEC 2020-U258 - 2020 UP6 - see above
0430Grabbed MPEC 2020-U254 - Comet C/2020 U3 (Rankin) - see above