Contents  on 22 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 22 January '10

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

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and two updated listings. So far The Tracking News has counted a total of eight 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 22 January '10

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.

MPEC 2010-B33 - "21:04 UT" - 2010 AB78

MPEC 2010-B32 - "17:42 UT" - 2010 BC3

MPEC 2010-B31 - "17:33 UT" - 2010 BB3

<< DOU on 22 Jan. '10 >>  MPEC 2010-B30 - "07:15 UT" - Daily Orbit Update

Observers  on 22 January '10

Eleven observing facilities appear in today's MPECs.

CodeObserver / observatory
160Castelmartini Obs. in Italy, 2 in MPEC 2010-B30 -- 3552, 433
106Crni Vrh Obs. in Slovenia, 2 in MPEC 2010-B30 -- 86067, 219527
704LINEAR in New Mexico, 6 in MPEC 2010-B30 -- 2007 UR3, 2005 BE, 2003 BH, 35396, 215188, 137925
J75La Sagra Obs. in Spain, 2 in MPECs 2010-B31 & 2010-B32 -- 2010 BC3, 2010 BB3
B33Libbiano Obs. in Italy, 1 in MPEC 2010-B32 -- 2010 BC3
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-B33 -- 2010 AB78
900Moriyama Obs. in Japan, 1 in MPEC 2010-B31 -- 2010 BB3
I20Rio Cuarto Obs. in Argentina, 4 in MPECs 2010-B30 & 2010-B32 -- 2010 BG2, 2010 BC3, 2009 TG8, 2003 CR1
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2010-B30 -- 2010 BQ, 2001 BE10, 85709, 143947
587Sormano Obs. in Italy, 2 in MPEC 2010-B30 -- 2010 BK2, 2010 AN60
C51WISE in Earth polar orbit, 1 in MPEC 2010-B33 -- 2010 AB78
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 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 BU2NEODyS15032054-208741.57e-06-5.69-5.700NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2010/01/21.149 to 2010/01/21.931."
JPL Sentry01542041-2108101.4e-06-5.73-5.740JPL: "Analysis based on 9 observations spanning .78253 days (2010-Jan-21.14812 to 2010-Jan-21.93065)." Diameter approximately 0.042 km. from mean, weighted H=24.5.

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 22 January '10

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

2118Grabbed MPEC 2010-B33 - 2010 AB78 - see above
1834Grabbed MPEC 2010-B31 - 2010 BB3 - see above
Grabbed MPEC 2010-B32 - 2010 BC3 - see above
1503Noted that NEODyS has posted 2010 BU2 as an impact risk - see above
Grabbed MPEC 2010-B30 - Daily Orbit Update - see above
0154Noted that JPL Sentry has posted 2010 BU2 as an impact risk - see above