Contents  on 13 January '09


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 '09

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one updated listing.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 13 January '09

Minor Planet Electronic Circulars

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

MPEC 2009-A67 - "17:19 UT" - PHAs

MPEC 2009-A66 - "17:19 UT" - Unusual Minor Planets

MPEC 2009-A65 - "17:19 UT" - Amors

MPEC 2009-A64 - "17:19 UT" - Atens and Apollos

MPEC 2009-A63 - "17:07 UT" - Distant Minor Planets

MPEC 2009-A62 - "17:03 UT" - Observable Comets

<< DOU on 13 Jan. '09 >>  MPEC 2009-A61 - "07:08 UT" - Daily Orbit Update

Observers  on 13 January '09

Six observing facilities appear in today's MPEC.

CodeObserver / observatory
448Desert Moon Obs. in New Mexico, 3 in MPEC 2009-A61 -- 2008 YE29, 2008 XN, 136635
I36Los Campitos Obs. in Argentina, 1 in MPEC 2009-A61 -- 5332
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2009-A61 -- 136849
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2009-A61 -- 2008 TS10
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2009-A61 -- 35107, 194386, 8567
H06\B. Conklin via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-A61 -- 2008 QT3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 January '09

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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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
2008 TS10JPL Sentry13492068-2103174.3e-05-6.63-7.420JPL: "Analysis based on 17 observations spanning 14.137 days (2008-Oct-08.36174 to 2008-Oct-22.498735)." Diameter approximately 0.006 km. from mean, weighted H=28.8.

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 '09

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

1759Grabbed MPEC 2009-A62 - Observable Comets - see above
Grabbed MPEC 2009-A63 - Distant Minor Planets - see above
Grabbed MPEC 2009-A64 - Atens and Apollos - see above
Grabbed MPEC 2009-A65 - Amors - see above
Grabbed MPEC 2009-A66 - Unusual Minor Planets - see above
Grabbed MPEC 2009-A67 - PHAs - see above
1349Noted that JPL Sentry has updated its 2008 TS10 risk assessment - see above
Grabbed MPEC 2009-A61 - Daily Orbit Update - see above