Contents  on 13 February '10


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 13 February '10

The MPC's NEO Confirmation Page has 7 listings: 1 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and six updated listings. Of these, two were "one nighters."

New MPECs  on 13 February '10

Minor Planet Electronic Circulars

There was one MPEC posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 13 Feb. '10 >>  MPEC 2010-C48 - "07:22 UT" - Daily Orbit Update

Observers  on 13 February '10

Eleven observing facilities appeared in this day's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 28 in MPEC 2010-C48 -- 2010 CN, 2010 CM1, 2010 CL1, 2010 CK1, 2010 CJ1, 2010 CA, 2010 BT3, 2010 BK2, 2010 BH2, 2010 BC3, 2010 BB3, 2010 BB, 2010 AO60, 2010 AL60, 2010 AF30, 2009 XO2, 2009 XB2, 2009 UW2, 2007 GD49, 2007 DT103, 2005 WR2, 2005 WD1, 2005 TP45, 2005 RQ6, 2004 RY109, 2001 XP88, 2000 JN10, 161995
B88Bigmuskie Obs. in Italy, 5 in MPEC 2010-C48 -- 2010 BB3, 2005 TY51, 2002 AJ129, 2001 PT9, 230549
B09Capannoli Obs. in Italy, 2 in MPEC 2010-C48 -- 86067, 1627
448Desert Moon Obs. in New Mexico, 6 in MPEC 2010-C48 -- 2010 CL1, 2010 BT3, 2010 BL2, 2010 BC3, 2009 XC2, 2001 FO32
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 4 in MPEC 2010-C48 -- 2010 CK1, 2010 BB3, 2009 UN3, 2004 XD50
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-C48 -- 2001 HA4
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2010-C48 -- 2002 CY58
I20Rio Cuarto Obs. in Argentina, 2 in MPEC 2010-C48 -- 2010 CL1, 2002 XY38
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2010-C48 -- 2010 BB
I19Tanti Obs. in Argentina, 1 in MPEC 2010-C48 -- 2010 CN1
C51WISE in Earth polar orbit, 1 in MPEC 2010-C48 -- 2009 XC2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 February '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL 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 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.





Notes for Today's Latest Risk Assessments
2010 CM1NEODyS2007R E M O V E D-
2010 CANEODyS2007202222.4e-05-3.72-3.720NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2010/02/05.197 to 2010/02/12.133."
2001 WN5NEODyS18182106-213341.21e-04-1.12-1.120NEODyS: "Based on 123 optical observations (of which 7 are rejected as outliers) from 1996/02/10.397 to 2010/02/11.484."
JPL Sentry1522213311.0e-04-1.18-1.18-"Analysis based on 119 observations spanning 5115.1 days (1996-Feb-10.39593 to 2010-Feb-11.48277)." Diameter approximately 0.780 km. from mean, weighted H=18.2.

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 13 February '10

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

0510 2/16Grabbed MPEC 2010-C48 - Daily Orbit Update - see above
2007Noted that NEODyS has updated its 2010 CA risk assessment - see above
Noted that NEODyS has removed 2010 CM1 as an impact risk - see above
1818Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
0207Noted that JPL Sentry has updated its 153814 2001 WN5 risk assessment - see above