Contents  on 25 August '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 25 August '10

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (checked at 2359 UTC). It was last noted active on August 22nd.

New MPECs  on 25 August '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 25 Aug. '10 >>  MPEC 2010-Q25 - "06:09 UT" - Daily Orbit Update

Observers  on 25 August '10

Three observing facilities appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPEC 2010-Q25 -- 2010 PS65, 2010 PR66, 2010 PO2, 2010 PL9, 2010 JE, 2000 PQ27
160Castelmartini Obs. in Italy, 11 in MPEC 2010-Q25 -- 2010 MF1, 66008, 243147, 242211, 19764, 153842, 152952, 143381, 4486, 4197, 2212
204Schiaparelli Obs. in Italy, 5 in MPEC 2010-Q25 -- 2010 PM9, 2010 PM10, 2010 OC, 2007 TY18, 2007 EJ26
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 August '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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. Both also post impact solutions beyond 100 years for a few special 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 PR66JPL Sentry14422098-210721.8e-07-4.22-4.220JPL: "Analysis based on 100 observations spanning 8.8982 days (2010-Aug-15.2648 to 2010-Aug-24.162972)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
2010 PS65JPL Sentry1442210212.2e-06-5.79-5.790JPL: "Analysis based on 35 observations spanning 10.022 days (2010-Aug-13.29423 to 2010-Aug-23.31639)." Diameter approximately 0.041 km. from mean, weighted H=24.6.

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 25 August '10

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

1442Noted that JPL Sentry has updated its 2010 PR66 risk assessment - see above
Noted that JPL Sentry has updated its 2010 PS65 risk assessment - see above
Grabbed MPEC 2010-Q25 - Daily Orbit Update - see above