Contents  on 10 February '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 10 February '20

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, eight were "one nighters." So far The Tracking News has counted a total of 25 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 10 February '20

Minor Planet Electronic Circulars

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


<< DOU on 10 February '20 >>  MPEC 2020-C128 - "12:05 UT" - Daily Orbit Update


MPEC 2020-C127 - "08:20 UT" - 2020 CD2


MPEC 2020-C126 - "08:15 UT" - 2020 CC2


MPEC 2020-C125 - "02:43 UT" - 2020 BW14

Observers  on 10 February '20

A total of 28 observers appear in today's MPECs.

CodeObserver / observatory
T08ATLAS Mauna Loa in Hawaii, 12 in MPEC 2020-C128 -- 85628, 66008, 54686, 492143, 30825, 152931, 138127, 137170, 11405, 106589, 106538, 7088
V00Bok Telescope in Arizona, 1 in MPEC 2020-C128 -- 386847
160Castelmartini Obs. in Italy, 19 in MPEC 2020-C128 -- 2020 BZ11, 2020 BE2, 2019 WB6, 2019 SH6, 86450, 85628, 512245, 511684, 500094, 36284, 35107, 30825, 243025, 162038, 152931, 137925, 136582, 11405, 11066
703Catalina Sky Survey in Arizona, 1 in MPEC 2020-C128 -- 2019 OA3
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2020-C127 -- 2020 CD2
Z40El Manzanillo Obs., 1 in MPEC 2020-C128 -- 163373
240Herrenberg Obs. in Germany, 2 in MPEC 2020-C128 -- 243025, 2059
C401program code 1 via Kuban State Univ. Obs. in Russia, 2 in MPEC 2020-C128 -- 52768, 163373
W86LCO Cerro Tololo B in Chile, 1 in MPEC 2020-C127 -- 2020 CD2
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2020-C127 -- 2020 CD2
V39LCO McDonald Obs. B in Texas, 1 in MPEC 2020-C128 -- 2020 CX1
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2020-C126 & 2020-C128 -- 2020 CC2, 2019 OZ1, 2019 OA5, 2019 OA3
0895N.V. Maigurova via Nikolaev Obs. in Ukraine, 8 in MPEC 2020-C128 -- 481394, 354030, 237805, 18172, 162082, 159686, 153842, 152754
F51Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2020-C125, 2020-C127 & 2020-C128 -- 2020 CD2, 2020 BW14, 2019 OJ, 2019 OA3, 2015 RC36
F52Pan-STARRS 2 in Hawaii, 1 in MPEC 2020-C128 -- 2019 OA5
K63Pascoli Obs. in Italy, 2 in MPEC 2020-C128 -- 512245, 214088
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 2 in MPECs 2020-C126 & 2020-C128 -- 2020 CC2, 137199
C95SATINO-1 in France, 1 in MPEC 2020-C128 -- 2016 XO23
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-C126 -- 2020 CC2
0948program code 8 via Simeis Obs. in Ukraine, 1 in MPEC 2020-C128 -- 2020 CY1
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2020-C128 -- 310442
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2020-C128 -- 162080
I52Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2020-C126 -- 2020 CC2
A16Tentlingen Obs. in Switzerland, 2 in MPEC 2020-C128 -- 153267, 9400
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-C128 -- 2020 AP3, 2019 YM4
L01Visnjan Obs. in Croatia, 1 in MPEC 2020-C126 -- 2020 CC2
Z57Zuben Obs., 1 in MPEC 2020-C128 -- 163373
I41Zwicky Transient Facility in southern California, 1 in MPEC 2020-C128 -- 52768
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 February '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 CX1NEODyS1620R E M O V E D-
JPL Sentry16202097-210421.2801e-08-7.81-7.870JPL: Computed at 05:40 today Pacific time based on 26 observations spanning 3.7946 days (2020-Feb-05.41525 to 2020-Feb-09.209812). Diameter approximately 0.050 km. from weighted mean H=24.15.
2020 BW14NEODyS1620R E M O V E D-
JPL Sentry0500R E M O V E DJPL: Risk listing removed at 0400 UTC today

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 10 February '20

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

1620Noted that NEODyS has removed 2020 BW14 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 CX1 risk assessment - see above
Noted that NEODyS has removed 2020 CX1 as an impact risk - see above
Grabbed MPEC 2020-C126 - 2020 CC2 - see above
Grabbed MPEC 2020-C127 - 2020 CD2 - see above
Grabbed MPEC 2020-C128 - Daily Orbit Update - see above
0500Noted that JPL Sentry has removed 2020 BW14 as an impact risk - see above
Grabbed MPEC 2020-C125 - 2020 BW14 - see above