Contents  on 12 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 12 January '10

The MPC's NEO Confirmation Page has 11 listings: 5 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and six updated listings. All of these were "one nighters." So far The Tracking News has counted a total of fourteen 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 12 January '10

Minor Planet Electronic Circulars

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

MPEC 2010-A65 - "23:00 UT" - 2010 AL30

MPEC 2010-A64 - "22:27 UT" - 2010 AL30

MPEC 2010-A63 - "17:21 UT" - 2010 AL30

MPEC 2010-A62 - "15:43 UT" - 2010 AL30

MPEC 2010-A61 - "12:51 UT" - 2010 AL30

<< DOU on 12 Jan. '10 >>  MPEC 2010-A60 - "07:11 UT" - Daily Orbit Update

Observers  on 12 January '10

A total of 21 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 2 in MPEC 2010-A60 -- 2010 AE30, 2009 AV
C12Berta Obs., 2 in MPECs 2010-A60 & 2010-A61 -- 2010 AL30, 433
113Drebach Obs. in Germany, 1 in MPEC 2010-A64 -- 2010 AL30
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPECs 2010-A62 & 2010-A63 -- 2010 AL30
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2010-A62 -- 2010 AL30
143Gnosca Obs. in Switzerland, 1 in MPECs 2010-A60 & 2010-A62 -- 2010 AL30
B86Hagen Obs. in Germany, 1 in MPEC 2010-A65 -- 2010 AL30
415Kambah Obs. in the Australian Capital Territory, 1 in MPECs 2010-A62 & 2010-A63 -- 2010 AL30
046Klet Obs. in the Czech Republic, 1 in MPECs 2010-A64 & 2010-A65 -- 2010 AL30
D95Kurihara Obs. in Japan, 1 in MPEC 2010-A60 -- 433
809La Silla in Chile, 1 in MPEC 2010-A60 -- 2006 MF10
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2010-A61 -- 2010 AL30
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-A60 -- 2005 TU45
213Montcabre Obs. in Spain, 1 in MPECs 2010-A60 & 2010-A62 -- 2010 AL30
H23Pear Tree Obs. in Florida, 1 in MPEC 2010-A60 -- 4015
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-A61 -- 2010 AL30
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2010-A60 -- 2008 AB31, 1997 YM3, 105141
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2010-A60 -- 2009 YT6, 2009 YO, 2009 XZ1, 2009 XO
926Tenagra II Obs. in Arizona, 3 in MPECs 2010-A60 & 2010-A63 -- 2010 AL30, 2010 AJ3, 2010 AE
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPECs 2010-A61 & 2010-A64 -- 2010 AL30
718Wiggins Obs. in Utah, 1 in MPEC 2010-A61 -- 2010 AL30
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 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 AE30JPL Sentry1501R E M O V E DJPL: Risk listing removed at 0951 UTC.
2009 XOJPL Sentry15012038-208332.4e-07-4.46-4.730JPL: "Analysis based on 196 observations spanning 33.391 days (2009-Dec-09.152 to 2010-Jan-11.5431)." Diameter approximately 0.260 km. from mean, weighted H=20.5.
NEODyS15012038-208321.32e-07-4.61-4.720NEODyS: "Based on 196 optical observations (of which 0 are rejected as outliers) from 2009/12/09.153 to 2010/01/11.544."

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 12 January '10

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

2307Grabbed MPEC 2010-A65 - 2010 AL30 - see above
2238Grabbed MPEC 2010-A64 - 2010 AL30 - see above
1814Grabbed MPEC 2010-A63 - 2010 AL30 - see above
1600Grabbed MPEC 2010-A62 - 2010 AL30 - see above
1501Noted that JPL Sentry has updated its 2009 XO risk assessment - see above
Noted that NEODyS has updated its 2009 XO risk assessment - see above
Noted that JPL Sentry has removed 2010 AE30 as an impact risk - see above
Grabbed MPEC 2010-A60 - Daily Orbit Update - see above
Grabbed MPEC 2010-A61 - 2010 AL30 - see above