Contents  on 11 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 11 November '08

The MPC's NEO Confirmation Page has 6 listings: 1 new, 5 updated

When last checked at 2316 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and five updated listings. Of these, five were "one nighters."

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 11 November '08

Minor Planet Electronic Circulars

As of last check at 2316 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-V56 - "23:14 UT" - 2008 VA15

<< DOU on 11 Nov. '08 >>  MPEC 2008-V55 - "07:18 UT" - Daily Orbit Update

Observers  on 11 November '08

Twelve observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 4 in MPECs 2008-V55 & 2008-V56 -- 2008 VL14, 2008 VK14, 2008 VG14, 2008 VA15
B09Capannoli Obs. in Italy, 1 in MPEC 2008-V55 -- 2006 SZ217
J95Great Shefford Obs. in England, 1 in MPEC 2008-V56 -- 2008 VA15
704LINEAR in New Mexico, 1 in MPEC 2008-V56 -- 2008 VA15
B67Mirasteilas Obs. in Switzerland, 6 in MPEC 2008-V55 -- 2008 VU4, 2007 AE12, 85774, 53430, 20460, 7358
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-V56 -- 2008 VA15
A13Naef Obs. in Switzerland, 3 in MPEC 2008-V55 -- 2008 UT5, 2007 AE12, 7358
J52Pinsoro Obs. in Spain, 1 in MPEC 2008-V55 -- 1620
D29Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2008-V55 -- 2008 UE7
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-V56 -- 2008 VA15
H36Sandlot Obs. in Kansas, 1 in MPEC 2008-V56 -- 2008 VA15
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2008-V55 -- 2008 UT99, 2008 UE202, 2002 AW11
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 November '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2316 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 VL14JPL Sentry13542019-2103231.3e-07-4.48-5.140JPL: "Analysis based on 22 observations spanning 1.0596 days (2008-Nov-09.2656 to 2008-Nov-10.32519)." Diameter approximately 0.219 km. from mean, weighted H=20.9.
NEODyS13542019-2090142.36e-08-4.95-5.600NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2008/11/09.266 to 2008/11/10.326."
2008 VH14NEODyS13542052-209047.5e-09-7.20-7.230NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/11/08.223 to 2008/11/09.364."
2008 UB7NEODyS22012048-2090474.56e-05-3.66-4.070NEODyS: "Based on 66 optical observations (of which 0 are rejected as outliers) from 2008/10/26.260 to 2008/10/31.126."

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 11 November '08

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

2316Grabbed MPEC 2008-V56 - 2008 VA15 - see above
2201Noted that NEODyS has updated its 2008 UB7 risk assessment - see above
1354Noted that NEODyS has posted 2008 VH14 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 VL14 risk assessment - see above
Noted that NEODyS has posted 2008 VL14 as an impact risk - see above
Grabbed MPEC 2008-V55 - Daily Orbit Update - see above