Contents  on 13 January '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 January '10

The MPC's NEO Confirmation Page has 5 listings: 3 new, 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and two updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of thirteen 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 13 January '10

Minor Planet Electronic Circulars

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

MPEC 2010-A70 - "21:43 UT" - 2008 JO24

MPEC 2010-A69 - "15:10 UT" - 2010 AG40

MPEC 2010-A68 - "15:02 UT" - 2010 AF40

MPEC 2010-A67 - "14:51 UT" - 2010 AE40

<< DOU on 13 Jan. '10 >>  MPEC 2010-A66 - "07:10 UT" - Daily Orbit Update

Observers  on 13 January '10

Fifteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 4 in MPECs 2010-A67, 2010-A68, 2010-A69 & 2010-A70 -- 2010 AG40, 2010 AF40, 2010 AE40, 2008 JO24
I77CEAMIG-REA in Brazil, 1 in MPEC 2010-A66 -- 2010 AL30
703Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2010-A66, 2010-A67 & 2010-A69 -- 2010 AG40, 2010 AE40, 2009 XB2, 2004 XD50, 2004 AR1, 219527, 138937, 10165, 5626, 4015, 3553, 2212
046Klet Obs. in the Czech Republic, 1 in MPEC 2010-A66 -- 2010 AL30
704LINEAR in New Mexico, 17 in MPEC 2010-A66 -- 2009 XO, 2009 RN, 2008 YZ32, 2005 QL, 2005 AT42, 2004 TB18, 96590, 187026, 163696, 162998, 16064, 105141, 5653, 4486, 4015, 1864, 1627
H12LightBuckets Obs. Mayhill in New Mexico, 1 in MPEC 2010-A66 -- 163692
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2010-A67, 2010-A68 & 2010-A69 -- 2010 AG40, 2010 AF40, 2010 AE40
B82Maidbronn Obs. in Germany, 1 in MPEC 2010-A66 -- 2010 AL30
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2010-A66 & 2010-A68 -- 2010 AF40, 2010 AF30, 2009 WE253, 2009 NA, 2009 MX6, 2002 YN2, 2000 WP148, 99248, 38091, 175706, 163696, 1917
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2010-A67 -- 2010 AE40
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-A67 & 2010-A68 -- 2010 AF40, 2010 AE40
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2010-A66 -- 99248, 39572, 23606, 164216
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2010-A66 & 2010-A68 -- 2010 AN2, 2010 AM2, 2010 AF40, 2009 XO
926Tenagra II Obs. in Arizona, 6 in MPECs 2010-A66, 2010-A67 & 2010-A69 -- 2010 AG40, 2010 AG30, 2010 AE40, 2010 AE30, 2010 AB3, 2009 XO
H53Thompsonville Obs. in Illinois, 5 in MPEC 2010-A66 -- 218863, 214088, 5626, 3552, 433
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 January '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 AF40JPL Sentry17212018-206331.6e-09-8.25-8.370JPL: "Analysis based on 20 observations spanning .98604 days (2010-Jan-12.35742 to 2010-Jan-13.34346)." Diameter approximately 0.034 km. from mean, weighted H=25.0.
2009 XOJPL Sentry15002038-208123.8e-07-4.08-4.130JPL: "Analysis based on 207 observations spanning 34.403 days (2009-Dec-09.152 to 2010-Jan-12.55502)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
NEODyS15002038-208123.78e-07-4.08-4.130NEODyS: "Based on 207 optical observations (of which 0 are rejected as outliers) from 2009/12/09.153 to 2010/01/12.556."

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 January '10

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

2204Grabbed MPEC 2010-A70 - 2008 JO24 - see above
1721Noted that JPL Sentry has posted 2010 AF40 as an impact risk - see above
1601Grabbed MPEC 2010-A68 - 2010 AF40 - see above
Grabbed MPEC 2010-A69 - 2010 AG40 - see above
1500Noted that JPL Sentry has updated its 2009 XO risk assessment - see above
Noted that NEODyS has updated its 2009 XO risk assessment - see above
Grabbed MPEC 2010-A66 - Daily Orbit Update - see above
Grabbed MPEC 2010-A67 - 2010 AE40 - see above