Contents  on 10 February '10

Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

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. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

NEOCP Activity  on 10 February '10

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and two updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of sixteen listings on the NEOCP at some point 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 '10

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 2010-C42 - "21:17 UT" - 2010 CR1


MPEC 2010-C41 - "15:53 UT" - 2010 CO1


MPEC 2010-C40 - "15:09 UT" - 2010 CN1


MPEC 2010-C39 - "15:05 UT" - 2010 CM1


<< DOU on 10 Feb. '10 >>  MPEC 2010-C38 - "07:21 UT" - Daily Orbit Update


MPEC 2010-C37 - "00:38 UT" - 2010 CL1


MPEC 2010-C36 - "00:36 UT" - 2010 CK1


MPEC 2010-C35 - "00:32 UT" - 2010 CJ1

Observers  on 10 February '10

Sixteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 19 in MPECs 2010-C38 & 2010-C41 -- 2010 CO1, 2010 BZ4, 2010 BQ, 2010 BL2, 2010 BH2, 2010 BC3, 2010 BB3, 2010 AO60, 2010 AL, 2010 AH30, 2010 AE, 2009 XR2, 2009 XF2, 2009 WL1, 2009 UV18, 2009 QL8, 2003 AZ2, 2000 EW70, 1999 VQ11
160Castelmartini Obs. in Italy, 12 in MPEC 2010-C38 -- 2009 WO6, 2003 BT47, 86067, 54789, 230420, 214088, 20790, 162998, 162038, 105141, 5626, 433
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2010-C36, 2010-C37 & 2010-C38 -- 2010 CL1, 2010 CK1, 2002 AJ129
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-C38 -- 2010 CM, 2009 WF104, 2009 QL8
J95Great Shefford Obs. in England, 4 in MPECs 2010-C35, 2010-C36, 2010-C37 & 2010-C38 -- 2010 CL1, 2010 CK1, 2010 CJ1, 2009 UN3
J37Huelva Obs. in Spain, 1 in MPEC 2010-C38 -- 2009 UN3
704LINEAR in New Mexico, 11 in MPEC 2010-C38 -- 2008 EE, 2002 NW16, 2002 AJ129, 2001 PT9, 86067, 54789, 20790, 10165, 5693, 4015, 1862
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2010-C35, 2010-C39 & 2010-C41 -- 2010 CO1, 2010 CM1, 2010 CJ1
J93Mt. Tuffley Obs. in England, 3 in MPEC 2010-C38 -- 2009 UN3, 86067, 54789
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2010-C38 -- 2009 SV171
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2010-C38, 2010-C40 & 2010-C42 -- 2010 CT, 2010 CR1, 2010 CN1
691Spacewatch 0.9m telescope in Arizona, 7 in MPEC 2010-C38 -- 2009 UN3, 26760, 216689, 172722, 136618, 8567, 1627
291Spacewatch 1.8m telescope in Arizona, 2 in MPECs 2010-C39 & 2010-C41 -- 2010 CO1, 2010 CM1
I19Tanti Obs. in Argentina, 2 in MPECs 2010-C40 & 2010-C42 -- 2010 CR1, 2010 CN1
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-C38 -- 2009 UN3
C51WISE in Earth polar orbit, 1 in MPEC 2010-C41 -- 2010 CO1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 February '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL 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 is 100 years from today and for NEODyS is usually the year 2090. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) 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
2010 CJ1NEODyS14172020-207872.27e-09-7.93-8.350NEODyS: "Based on 7 optical observations (of which 0 are rejected as outliers) from 2010/02/09.277 to 2010/02/09.979."
JPL Sentry04262014-2110772.7e-08-7.05-8.100JPL: "Analysis based on 7 observations spanning .70258 days (2010-Feb-09.27598 to 2010-Feb-09.97856)." Diameter approximately 0.046 km. from mean, weighted H=24.3.

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

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 '10

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

2218Grabbed MPEC 2010-C42 - 2010 CR1 - see above
1605Grabbed MPEC 2010-C39 - 2010 CM1 - see above
Grabbed MPEC 2010-C40 - 2010 CN1 - see above
Grabbed MPEC 2010-C41 - 2010 CO1 - see above
1417Noted that NEODyS has posted 2010 CJ1 as an impact risk - see above
Grabbed MPEC 2010-C38 - Daily Orbit Update - see above
0426Noted that JPL Sentry has posted 2010 CJ1 as an impact risk - see above
0116Grabbed MPEC 2010-C35 - 2010 CJ1 - see above
Grabbed MPEC 2010-C36 - 2010 CK1 - see above
Grabbed MPEC 2010-C37 - 2010 CL1 - see above