Contents  on 9 August '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 9 August '09

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 2358 UTC). It was last noted active on August 5th.

New MPECs  on 9 August '09

Minor Planet Electronic Circulars

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

MPEC 2009-P33 - "21:01 UT" - 2009 MZ6

<< DOU on 9 Aug. '09 >>  MPEC 2009-P32 - "06:05 UT" - Daily Orbit Update

Observers  on 9 August '09

Eight observing facilities appear in today's MPECs.

CodeObserver / observatory
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2009-P32 -- 9162
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2009-P32 -- 9162
J95Great Shefford Obs. in England, 2 in MPEC 2009-P32 -- 2009 NL, 217013
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2009-P32 -- 2002 LV
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2009-P33 -- 2009 MZ6
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2009-P32 -- 2009 NE, 2002 LV
204Schiaparelli Obs. in Italy, 3 in MPEC 2009-P32 -- 68350, 136849, 4179
H53Thompsonville Obs. in Illinois, 2 in MPEC 2009-P32 -- 17274, 5626
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 August '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.
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
1991 VGJPL Sentry2206210114.4e-07-8.51-8.510JPL: "Analysis based on 63 observations spanning 173.12 days (1991-Nov-06.32553 to 1992-Apr-27.44847)." Diameter approximately 0.007 km. from mean, weighted H=28.4.

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 9 August '09

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

2206Noted that JPL Sentry has posted 1991 VG as an impact risk - see above
2120Grabbed MPEC 2009-P33 - 2009 MZ6 - see above
1709Grabbed MPEC 2009-P32 - Daily Orbit Update - see above