Contents  on 12 November '08


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 12 November '08

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There were five listings noted earlier today.

New MPECs  on 12 November '08

Minor Planet Electronic Circulars

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

<< DOU on 12 Nov. '08 >>  MPEC 2008-V58 - "07:14 UT" - Daily Orbit Update

MPEC 2008-V57 - "03:47 UT" - 2001 XQ = 2008 VV4

Observers  on 12 November '08

Seven observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 19 in MPEC 2008-V58 -- 2008 VU3, 2008 VN, 2008 VK, 2008 VF, 2008 VE, 2008 UZ91, 2008 UW99, 2008 UW91, 2008 UP100, 2008 UE7, 2008 UC95, 2008 UB95, 2008 TY9, 2008 TR2, 2008 TQ2, 2008 SV7, 2008 RT26, 2008 QD1, 2008 MZ
A81Balzaretto Obs. in Italy, 1 in MPEC 2008-V58 -- 2008 UT5
703Catalina Sky Survey in Arizona, 1 in MPEC 2008-V58 -- 2005 WJ56
448Desert Moon Obs. in New Mexico, 4 in MPEC 2008-V58 -- 2008 UL90, 2008 UE7, 2008 UD7, 2008 SH82
J95Great Shefford Obs. in England, 1 in MPEC 2008-V58 -- 2008 VL14
704LINEAR in New Mexico, 3 in MPEC 2008-V58 -- 66146, 7358, 1627
A70Lumijoki Obs. in Finland, 1 in MPEC 2008-V58 -- 2008 UE7
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 November '08

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 VL14NEODyS13582047-207676.29e-07-3.89-4.070NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2008/11/09.266 to 2008/11/12.005."
JPL Sentry13572032-2103138.9e-07-3.78-4.050JPL: "Analysis based on 24 observations spanning 2.7383 days (2008-Nov-09.2656 to 2008-Nov-12.00394)." Diameter approximately 0.219 km. from mean, weighted H=21.0.
2008 VV4NEODyS1357R E M O V E D-
2008 UW99JPL Sentry13572085-209323.2e-07-6.67-6.960JPL: "Analysis based on 31 observations spanning 9.9448 days (2008-Oct-31.45784 to 2008-Nov-10.40268)." Diameter approximately 0.038 km. from mean, weighted H=24.7.

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 12 November '08

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

1607The NEOCP has become empty
1358Noted that NEODyS has updated its 2008 VL14 risk assessment - see above
1357Noted that JPL Sentry has reposted 2008 UW99 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 VL14 risk assessment - see above
Noted that NEODyS has removed 2008 VV4 as an impact risk - see above
Grabbed MPEC 2008-V58 - Daily Orbit Update - see above
0359Grabbed MPEC 2008-V57 - 2001 XQ = 2008 VV4 - see above