Contents  on 14 November '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 14 November '09

The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and one updated listing. Of these, one was a "one nighter." So far The Tracking News has counted a total of five listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 14 November '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-V68 - "23:09 UT" - 2008 ST291

<< DOU on 14 Nov. '09 >>  MPEC 2009-V67 - "07:09 UT" - Daily Orbit Update

Observers  on 14 November '09

Eight observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 4 in MPEC 2009-V67 -- 2009 VO24, 2009 UK28, 2009 RN, 2009 QB35
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2009-V67 -- 2005 RQ6
160Castelmartini Obs. in Italy, 5 in MPEC 2009-V67 -- 2009 VW, 2009 VP, 2009 UW18, 2009 UK28, 217807
J75La Sagra Obs. in Spain, 5 in MPEC 2009-V67 -- 2009 VW, 2009 KM7, 2009 KK8, 217807, 5131
568Mauna Kea in Hawaii, 1 in MPEC 2009-V68 -- 2008 ST291
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2009-V67 -- 5626
675Mt. Palomar in southern California, 1 in MPEC 2009-V68 -- 2008 ST291
H23Pear Tree Obs. in Florida, 3 in MPEC 2009-V67 -- 2009 TK12, 2009 ST19, 3200
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 November '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 VZ39NEODyS01562030-2087111.45e-07-8.53-8.940NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2009/11/10.273 to 2009/11/10.316."
2009 VO24JPL Sentry1641R E M O V E DJPL: Risk listing removed at 0950 UTC.
NEODyS1641R E M O V E D-

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 14 November '09

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

2314Grabbed MPEC 2009-V68 - 2008 ST291 - see above
1641Noted that JPL Sentry has removed 2009 VO24 as an impact risk - see above
Noted that NEODyS has removed 2009 VO24 as an impact risk - see above
Grabbed MPEC 2009-V67 - Daily Orbit Update - see above
0156Noted that NEODyS has posted 2009 VZ39 as an impact risk - see above