Contents  on 15 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 15 November '09

The MPC's NEO Confirmation Page has 5 listings: 1 new, 4 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and four updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of six 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 15 November '09

Minor Planet Electronic Circulars

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

<< DOU on 15 Nov. '09 >>  MPEC 2009-V69 - "07:09 UT" - Daily Orbit Update

Observers  on 15 November '09

Eleven observing facilities appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 5 in MPEC 2009-V69 -- 2009 TL4, 2009 TF10, 2009 SV171, 2009 HD21, 2008 WB59
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2009-V69 -- 2005 RQ6
160Castelmartini Obs. in Italy, 1 in MPEC 2009-V69 -- 2009 VW
J95Great Shefford Obs. in England, 1 in MPEC 2009-V69 -- 2009 VZ
379Hamamatsu-Yuto Obs. in Japan, 8 in MPEC 2009-V69 -- 2009 VW, 2009 UV18, 2009 TK12, 2009 RN, 2006 UR, 2005 RQ6, 1998 VF32, 3552
704LINEAR in New Mexico, 3 in MPEC 2009-V69 -- 2009 QD34, 38091, 216689
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 4 in MPEC 2009-V69 -- 2009 VR25, 2009 VQ, 2009 VN1, 2009 KK
J131National Schools Obs. via the Liverpool Telescope in the Canary Islands, 1 in MPEC 2009-V69 -- 2009 SV171
130Lumezzane Obs. in Italy, 10 in MPEC 2009-V69 -- 2009 VP, 2009 UY19, 2009 UK28, 2009 TM10, 2009 TK12, 2009 TF10, 2005 RQ6, 2001 UW16, 38091, 185716
204Schiaparelli Obs. in Italy, 6 in MPEC 2009-V69 -- 2009 VQ, 2009 VP, 2009 VA1, 2009 UY87, 2009 UK14, 2009 MX6
926Tenagra II Obs. in Arizona, 2 in MPEC 2009-V69 -- 2009 VR, 2009 VA26
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 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 VA26NEODyS15382015-2087795.59e-08-4.63-5.380NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2009/11/11.381 to 2009/11/12.435."
JPL Sentry1538R E M O V E DJPL: Risk listing removed at 1027 UTC.
2009 VR25JPL Sentry1538R E M O V E DJPL: Risk listing removed at 1031 UTC.
NEODyS1538R 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 15 November '09

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

1538Noted that JPL Sentry has removed 2009 VA26 as an impact risk - see above
Noted that NEODyS has updated its 2009 VA26 risk assessment - see above
Noted that JPL Sentry has removed 2009 VR25 as an impact risk - see above
Noted that NEODyS has removed 2009 VR25 as an impact risk - see above
Grabbed MPEC 2009-V69 - Daily Orbit Update - see above