Contents  on 25 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 25 October '20

The MPC's NEO Confirmation Page has 61 listings

When last checked at 2330 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 61 objects listed. Of these, 36 were "one nighters." The Tracking News counted a total of 93 listings on the NEOCP on this day.

New MPECs  on 25 October '20

Minor Planet Electronic Circulars

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


MPEC 2020-U231 - "23:31 UT" - Comet P/2013 TL117 = 2020 U1 (Lemmon)


MPEC 2020-U230 - "18:08 UT" - 2020 UV5


MPEC 2020-U229 - "16:38 UT" - 2020 UU5


MPEC 2020-U228 - "13:42 UT" - 2020 UN5


MPEC 2020-U227 - "13:41 UT" - 2020 UM5


MPEC 2020-U226 - "13:40 UT" - 2020 UL5


MPEC 2020-U225 - "13:38 UT" - 2020 UK5


MPEC 2020-U224 - "13:37 UT" - 2020 UJ5


<< DOU on 25 October '20 >>  MPEC 2020-U223 - "12:05 UT" - Daily Orbit Update


MPEC 2020-U222 - "00:52 UT" - 2020 UF5


MPEC 2020-U221 - "00:48 UT" - 2020 UD5


MPEC 2020-U220 - "00:47 UT" - 2020 UC5


MPEC 2020-U219 - "00:46 UT" - 2020 UB5


MPEC 2020-U218 - "00:45 UT" - 2020 UA5


MPEC 2020-U217 - "00:43 UT" - 2020 UZ4


MPEC 2020-U216 - "00:42 UT" - 2020 TG9

Observers  on 25 October '20

A total of 32 observers appeared in this day's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPEC 2020-U223 -- 2020 TS7, 2020 TL8, 2020 TJ
T05ATLAS Haleakala in Hawaii, 28 in MPEC 2020-U223 -- 2020 TR5, 2020 PD1, 2020 PC5, 2013 PY6, 2009 UM, 2007 VX137, 2002 TS67, 96744, 90075, 88264, 69230, 68359, 65717, 480824, 414903, 30825, 304293, 19764, 185716, 145656, 140158, 6239, 5587, 5143, 4503, 3908, 3671, 1036
T08ATLAS Mauna Loa in Hawaii, 22 in MPEC 2020-U223 -- 2020 UX4, 2020 PD1, 2014 UR116, 2005 JT108, 2004 RF84, 2002 GZ8, 2000 PQ27, 1998 WA2, 88188, 523824, 428086, 418797, 415029, 382625, 380359, 376848, 16834, 163902, 159402, 144411, 141052, 10115
C77Bernezzo Obs. in Italy, 1 in MPEC 2020-U223 -- 2004 US1
L54Berthelot Obs., 1 in MPEC 2020-U223 -- 2020 UV
Z842E. Schwab via Calar Alto Schmidt in Spain, 1 in MPEC 2020-U231 -- P/2020 U1
703Catalina Sky Survey (CSS) in Arizona, 22 in MPECs 2020-U223 & 2020-U231 -- 2020 UO4, P/2020 U1, 2020 RX3, 2020 RV5, 2009 UM, 2006 UE17, 65717, 474179, 414903, 414586, 303262, 27031, 194126, 162173, 9058, 8014, 6239, 4688, 4503, 4486, 4450, 2212
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 20 in MPECs 2020-U221, 2020-U223, 2020-U227 & 2020-U229 -- 2020 UU5, 2020 UT1, 2020 UP, 2020 UO1, 2020 UM5, 2020 UM4, 2020 UJ2, 2020 UG2, 2020 UF1, 2020 UD5, 2020 TM7, 2020 TE7, 2020 TC7, 2020 TC1, 2020 TA7, 2020 SS2, 2020 RS4, 2020 RR2, 2020 RQ11, 2020 OC7
Z99Clixby Obs. in England, 3 in MPEC 2020-U223 -- 2020 UJ4, 2020 UG4, 2020 TD8
958Dax Obs. in France, 1 in MPEC 2020-U223 -- 2020 UX4
K87Dettelbach Vineyard Obs. in Germany, 6 in MPEC 2020-U223 -- 2020 ST1, 2020 PF7, 2013 UX14, 2013 PY6, 2004 US1, 2004 RF84
J27El Guijo Obs. in Spain, 3 in MPEC 2020-U223 -- 2005 JT108, 376848, 154302
L93Garraf Obs., 1 in MPEC 2020-U223 -- 53435
203GiaGa Obs. in Italy, 1 in MPEC 2020-U223 -- 2020 SR7
J95Great Shefford Obs. in England, 5 in MPECs 2020-U217, 2020-U223, 2020-U227 & 2020-U228 -- 2020 UZ4, 2020 UN5, 2020 UM5, 2020 UJ3, 2020 UC4
130Lumezzane Obs. in Italy, 3 in MPEC 2020-U223 -- 2020 ST1, 2020 QQ6, 2004 QD17
L52MASTER Tavrida, 1 in MPEC 2020-U223 -- 144411
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2020-U223 -- 2003 UG22
G96Mt. Lemmon Survey (MLS) in Arizona, 33 in MPECs 2020-U217, 2020-U218, 2020-U219, 2020-U220, 2020-U221, 2020-U223, 2020-U224, 2020-U225, 2020-U227 & 2020-U228 -- 2020 UZ4, 2020 UZ1, 2020 UY3, 2020 UQ4, 2020 UQ2, 2020 UN5, 2020 UM5, 2020 UK5, 2020 UJ5, 2020 UD5, 2020 UC5, 2020 UC1, 2020 UB5, 2020 UB2, 2020 UA5, 2020 TO8, 2020 TH5, 2020 ST1, 2020 SR7, 2020 RV5, 2020 RA3, 2020 OA2, 2020 LB3, 2019 SV4, 2017 UH5, 2017 GO6, 2007 VX137, 2006 UE17, 1998 VD32, 163373, 162173, 5143, 4503
Z80Northolt Branch Obs. in England, 1 in MPEC 2020-U223 -- 2020 ST1
F51Pan-STARRS 1 (PS1) in Hawaii, 31 in MPECs 2020-U216, 2020-U219, 2020-U220, 2020-U222, 2020-U223, 2020-U224, 2020-U225, 2020-U226, 2020-U229, 2020-U230 & 2020-U231 -- 2020 UV5, 2020 UU5, 2020 UQ4, 2020 UQ2, 2020 UL5, 2020 UK5, 2020 UJ5, 2020 UF5, 2020 UC5, 2020 UB5, P/2020 U1, 2020 TG9, 2020 SV3, 2020 ST1, 2020 SR7, 2020 RX3, 2020 OA2, 2007 SR1, 88264, 68359, 65717, 523707, 480824, 477248, 304293, 162173, 15817, 11398, 112221, 8507, 4503
F52Pan-STARRS 2 (PS2) in Hawaii, 39 in MPECs 2020-U217, 2020-U218, 2020-U221, 2020-U222, 2020-U223, 2020-U224, 2020-U225, 2020-U227, 2020-U228 & 2020-U231 -- 2020 UZ4, 2020 UN5, 2020 UM5, 2020 UL1, 2020 UK5, 2020 UJ5, 2020 UF5, 2020 UD5, 2020 UD, 2020 UA5, P/2020 U1, 2020 TP3, 2020 TK5, 2020 TH2, 2020 SO, 2020 RV5, 2020 RA8, 2020 QM4, 2020 QE4, 2020 PD1, 2020 OA2, 2020 ML3, 2017 SE19, 2016 VG3, 2013 PY6, 2010 WF3, 2009 JK1, 2007 SR1, 96744, 523804, 414586, 351331, 236716, 154302, 143624, 140158, 8037, 8013, 3671
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-U231 -- P/2020 U1
K61Rokycany Obs. in the Czech Republic, 3 in MPEC 2020-U223 -- 2020 TR5, 2020 TD8, 2020 SR7
C95SATINO-1 in France, 1 in MPEC 2020-U223 -- 2008 CZ118
Q11Shinshiro Obs., 1 in MPEC 2020-U231 -- P/2020 U1
W88!W.F. Cashwell in Nevada via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-U223 -- 2020 PD1
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2020-U223 -- 2017 TF1, 2017 SM10, 2017 SG12
I52Steward Obs. Mt. Lemmon Station in Arizona, 11 in MPECs 2020-U217, 2020-U218, 2020-U219, 2020-U220, 2020-U221, 2020-U223, 2020-U224, 2020-U227, 2020-U228 & 2020-U231 -- 2020 UZ4, 2020 UO4, 2020 UN5, 2020 UM5, 2020 UJ5, 2020 UD5, 2020 UC5, 2020 UB5, 2020 UA5, P/2020 U1, 2020 TZ4
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 1 in MPEC 2020-U231 -- P/2020 U1
858Tebbutt Obs. in New Mexico, 2 in MPECs 2020-U217 & 2020-U220 -- 2020 UZ4, 2020 UC5
I41Zwicky Transient Facility (ZTF) in southern California, 4 in MPEC 2020-U223 -- 65717, 380359, 242216, 162173
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 October '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2330 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 UX4JPL Sentry17112074-2120171.55696462e-05-5.32-5.690JPL: Computed at 08:26 today Pacific time based on 33 observations spanning 3.2186 days (2020-Oct-22.18386 to 2020-Oct-25.402479). Diameter approximately 0.027 km. from weighted mean H=25.50.
2020 UQ4JPL Sentry1711R E M O V E DJPL: Risk listing removed at 1522 UTC today
2020 UO4JPL Sentry17112103-2119256.02854769e-05-6.45-7.060JPL: Computed at 08:33 today Pacific time based on 52 observations spanning 1.0802 days (2020-Oct-23.354363 to 2020-Oct-24.43459). Diameter approximately 0.006 km. from weighted mean H=28.62.
NEODyS17102103-2120355.63e-05-6.51-6.94n/aNEODyS: "Based on 52 optical observations (of which 1 are rejected as outliers) from 2020-10-23.355 to 2020-10-24.435."
2020 UC4JPL Sentry17112113-211424.824e-08-8.23-8.370JPL: Computed at 08:30 today Pacific time based on 20 observations spanning 2.8398 days (2020-Oct-22.341905 to 2020-Oct-25.18173). Diameter approximately 0.020 km. from weighted mean H=26.12.
NEODyS17102084-212085.76e-07-7.15-7.59n/aNEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2020-10-22.343 to 2020-10-25.183."
2020 TD8JPL Sentry17112045-2107221.7449537e-05-5.62-5.750JPL: Computed at 08:11 today Pacific time based on 49 observations spanning 9.4279 days (2020-Oct-15.322434 to 2020-Oct-24.750344). Diameter approximately 0.014 km. from weighted mean H=26.97.
NEODyS17102045-2096412.8e-05-5.44-5.580NEODyS: "Based on 49 optical observations (of which 1 are rejected as outliers) from 2020-10-15.323 to 2020-10-24.751."
2020 TK5JPL Sentry17112039-205666.60244e-06-4.11-4.230JPL: Computed at 08:22 today Pacific time based on 83 observations spanning 10.049 days (2020-Oct-14.331481 to 2020-Oct-24.38005). Diameter approximately 0.064 km. from weighted mean H=23.64.
NEODyS17102052-205892.92e-06-4.69-4.760NEODyS: "Based on 85 optical observations (of which 2 are rejected as outliers) from 2020-10-14.332 to 2020-10-24.399."
2019 VHJPL Sentry17112065-2109175.4154e-06-6.78-7.290JPL: Computed at 07:03 Nov. 5th of 2019 Pacific time based on 26 observations spanning 6.9850 days (2019-Oct-29.300479 to 2019-Nov-05.2855). Diameter approximately 0.010 km. from weighted mean H=27.67.
2019 VCJPL Sentry17112117-211716.669e-08-9.52-9.520JPL: Computed at 06:32 May 10th Pacific time based on 59 observations spanning 9.3185 days (2019-Nov-01.20208 to 2019-Nov-10.5206). Diameter approximately 0.006 km. from weighted mean H=28.82.
2019 UTJPL Sentry17112103-2117110.000112018127-5.63-5.950JPL: Computed at 06:48 Oct. 20th of 2019 Pacific time based on 19 observations spanning 1.1077 days (2019-Oct-19.23007 to 2019-Oct-20.33772). Diameter approximately 0.009 km. from weighted mean H=27.95.
2015 UR67JPL Sentry17112091-209113.222e-06-6.27-6.270JPL: Computed at 08:07 May 10th of 2018 Pacific time based on 100 observations spanning 19.922 days (2015-Oct-31.3432 to 2015-Nov-20.26488). Diameter approximately 0.019 km. from weighted mean H=26.30.
2011 UC64JPL Sentry17112093-2115281.6616526e-05-6.34-7.000JPL: Computed at 17:12 April 12th of 2017 Pacific time based on 49 observations spanning 1.7674 days (2011-Oct-22.31798 to 2011-Oct-24.085335). Diameter approximately 0.009 km. from weighted mean H=27.92.

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 25 October '20

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

0001 10/26Grabbed MPEC 2020-U231 - Comet P/2013 TL117 = 2020 U1 (Lemmon) - see above
1911Grabbed MPEC 2020-U230 - 2020 UV5 - see above
1711Noted that JPL Sentry has updated its 2011 UC64 risk assessment - see above
Noted that JPL Sentry has updated its 2015 UR67 risk assessment - see above
Noted that JPL Sentry has updated its 2019 UT risk assessment - see above
Noted that JPL Sentry has updated its 2019 VC risk assessment - see above
Noted that JPL Sentry has updated its 2019 VH 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 UC4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 UO4 risk assessment - see above
Noted that JPL Sentry has removed 2020 UQ4 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 UX4 risk assessment - see above
1710Noted 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 UC4 risk assessment - see above
Noted that NEODyS has updated its 2020 UO4 risk assessment - see above
Grabbed MPEC 2020-U223 - Daily Orbit Update - see above
Grabbed MPEC 2020-U224 - 2020 UJ5 - see above
Grabbed MPEC 2020-U225 - 2020 UK5 - see above
Grabbed MPEC 2020-U226 - 2020 UL5 - see above
Grabbed MPEC 2020-U227 - 2020 UM5 - see above
Grabbed MPEC 2020-U228 - 2020 UN5 - see above
Grabbed MPEC 2020-U229 - 2020 UU5 - see above
0430Grabbed MPEC 2020-U216 - 2020 TG9 - see above
Grabbed MPEC 2020-U217 - 2020 UZ4 - see above
Grabbed MPEC 2020-U218 - 2020 UA5 - see above
Grabbed MPEC 2020-U219 - 2020 UB5 - see above
Grabbed MPEC 2020-U220 - 2020 UC5 - see above
Grabbed MPEC 2020-U221 - 2020 UD5 - see above
Grabbed MPEC 2020-U222 - 2020 UF5 - see above