Contents  on 13 November '11


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 13 November '11

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (checked at 2307 UTC). It was last noted active yesterday.

New MPECs  on 13 November '11

Minor Planet Electronic Circulars

As of last check at 2306 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 13 Nov. '11 >>  MPEC 2011-V40 - "06:03 UT" - Daily Orbit Update

Observers  on 13 November '11

Fourteen observers appear in today's MPEC.

CodeObserver / observatory
H49Arkansas Tech Univ. Obs. in Arkansas, 1 in MPEC 2011-V40 -- 2005 YU55
I92Astreo Obs., 1 in MPEC 2011-V40 -- 2005 YU55
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPEC 2011-V40 -- 2011 UZ275, 2011 UA115, 2011 SR69, 2011 SL102, 2011 LC19, 2011 HC36, 2010 JF
300Bisei Spaceguard Center in Japan, 5 in MPEC 2011-V40 -- 2011 TN9, 2009 SK1, 297418, 219071, 163081
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 15 in MPEC 2011-V40 -- 2011 UG21, 2011 QZ13, 2011 JA8, 2011 HC36, 2011 FZ2, 2010 JF, 2009 VO24, 2007 YF1, 2007 WU4, 2007 SP6, 2007 LQ19, 2006 UQ217, 2005 XM4, 2004 FF29, 108906
C73Galati Obs. in Romania, 1 in MPEC 2011-V40 -- 2005 YU55
240Herrenberg Obs. in Germany, 1 in MPEC 2011-V40 -- 2007 MM13
6951Marc W. Buie via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2011-V40 -- 2005 GX119
844Los Molinos Obs. in Uruguay, 2 in MPEC 2011-V40 -- 2011 FZ2, 2005 YU55
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2011-V40 -- 2011 OA, 2011 HP
J69North Obs. in England, 1 in MPEC 2011-V40 -- 2005 YU55
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2011-V40 -- 2011 UL21
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 2 in MPEC 2011-V40 -- 2011 UZ275, 2005 YU55
233San Vito Obs. in Italy, 2 in MPEC 2011-V40 -- 2004 QJ7, 302831
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 November '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2307 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. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON2 risk pages.





Notes for Today's Latest Risk Assessments
2009 VZ39JPL Sentry04032012-21107947.0e-06-6.03-6.870JPL: "Analysis based on 8 observations spanning .04342 days (2009-Nov-10.27204 to 2009-Nov-10.31546)." Diameter approximately 0.009 km. from mean, weighted H=27.9.

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 13 November '11

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

1704Grabbed MPEC 2011-V40 - Daily Orbit Update - see above
0403Noted that JPL Sentry has updated its 2009 VZ39 risk assessment - see above