Contents  on 3 September '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 3 September '09

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There was one listing noted earlier today.

New MPECs  on 3 September '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-R05 - "21:06 UT" - 2009 QV38

<< DOU on 3 Sept. '09 >>  MPEC 2009-R04 - "06:08 UT" - Daily Orbit Update

Observers  on 3 September '09

Fourteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 4 in MPECs 2009-R04 & 2009-R05 -- 2009 QV38, 2009 QJ9, 2009 QH34, 2009 QB35
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2009-R04 -- 2009 QB35
300Bisei Spaceguard Center in Japan, 1 in MPEC 2009-R05 -- 2009 QV38
160Castelmartini Obs. in Italy, 1 in MPEC 2009-R04 -- 2009 QH34
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-R05 -- 2009 QV38
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPEC 2009-R05 -- 2009 QV38
585Kiev Comet Station in the Ukraine, 3 in MPEC 2009-R04 -- 2009 QJ9, 2009 NH, 2009 MC9
704LINEAR in New Mexico, 3 in MPEC 2009-R04 -- 2005 MC, 2002 NW16, 105140
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2009-R04 -- 2009 NH, 2009 ML1, 2009 LX, 2002 NW16
H06|H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-R04 -- 2009 KC3
587Sormano Obs. in Italy, 3 in MPEC 2009-R04 -- 2009 QH34, 2009 QC35, 2009 QC23
H53Thompsonville Obs. in Illinois, 1 in MPEC 2009-R04 -- 17274
C00Velikie Luki Obs. in Russia, 1 in MPEC 2009-R04 -- 1943
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2009-R04 -- 3200
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 September '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
2009 QB35NEODyS13272067-207928.22e-11-7.65-7.730NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2009/08/28.344 to 2009/09/01.320."

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 3 September '09

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

2116Grabbed MPEC 2009-R05 - 2009 QV38 - see above
Noted that the NEOCP has become empty
1327Noted that NEODyS has updated its 2009 QB35 risk assessment - see above
Grabbed MPEC 2009-R04 - Daily Orbit Update - see above