Contents  on 6 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 6 November '11

The MPC's NEO Confirmation Page has 3 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three objects listed. All of these were "one nighters."

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 6 November '11

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 6 Nov. '11 >>  MPEC 2011-V29 - "06:07 UT" - Daily Orbit Update

Observers  on 6 November '11

Eight observers appear in today's MPEC.

CodeObserver / observatory
C60Argelander Institute for Astronomy Obs. in Germany, 1 in MPEC 2011-V29 -- 5143
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPEC 2011-V29 -- 2011 UZ255, 2011 US63, 2011 UP63, 2011 UH21, 2011 UF256, 2011 UA193, 2011 RR12
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2011-V29 -- 96744, 27002
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 15 in MPEC 2011-V29 -- 2011 UZ275, 2011 UY255, 2011 SF3, 2011 HC36, 2009 SK1, 2009 AV, 2009 AM15, 2007 LQ19, 2006 UQ217, 2006 BQ147, 2005 XM4, 2005 XB1, 2004 XN14, 2004 FF29, 2001 QL142
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2011-V29 -- 137799
704LINEAR in New Mexico, 5 in MPEC 2011-V29 -- 2003 FH, 36236, 16816, 3691, 3200
691Spacewatch 0.9m telescope in Arizona, 23 in MPEC 2011-V29 -- 2011 UX192, 2011 UW114, 2011 UM147, 2011 UJ10, 2011 UH21, 2011 SW71, 2011 SR69, 2011 SD173, 2011 QY11, 2011 LJ19, 2011 EF17, 2008 UX, 2008 QT3, 2007 TH19, 2006 WW1, 2003 HA22, 2001 UE5, 1988 TA, 68063, 65679, 42286, 162433, 136923
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2011-V29 -- 2011 UB131
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 November '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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
2011 UZ255JPL Sentry16382072-210521.4e-05-4.07-4.070JPL: "Analysis based on 60 observations spanning 5.8286 days (2011-Oct-30.44574 to 2011-Nov-05.27429)." Diameter approximately 0.075 km. from mean, weighted H=23.3.
NEODyS16382066-208941.51e-05-4.02-4.040NEODyS: "Based on 60 optical observations (of which 0 are rejected as outliers) from 2011-10-30.447 to 2011-11-05.275."

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 6 November '11

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

1638Noted that JPL Sentry has updated its 2011 UZ255 risk assessment - see above
Noted that NEODyS has updated its 2011 UZ255 risk assessment - see above
Grabbed MPEC 2011-V29 - Daily Orbit Update - see above
0536Noted that the NEOCP has become active