Contents  on 21 November '10


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 21 November '10

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There were two listings noted earlier today.

New MPECs  on 21 November '10

Minor Planet Electronic Circulars

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

MPEC 2010-W17 - "23:00 UT" - 2010 WL

<< DOU on 21 Nov. '10 >>  MPEC 2010-W16 - "07:12 UT" - Daily Orbit Update

Observers  on 21 November '10

Eleven observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 27 in MPEC 2010-W16 -- 2010 WC, 2010 VZ11, 2010 VX139, 2010 VW98, 2010 VW139, 2010 VV21, 2010 VQ98, 2010 VN98, 2010 VB140, 2010 VA12, 2010 UX6, 2010 UQ7, 2010 UH7, 2010 UE51, 2010 UD8, 2010 TV149, 2010 TJ7, 2010 RP80, 2010 RN80, 2010 RC130, 2010 RC12, 2010 OC, 2010 LR68, 2007 EM88, 2003 WB25, 2002 VE68, 2002 UR3
B75Betelgeuse Station in Italy, 1 in MPEC 2010-W16 -- 8567
703Catalina Sky Survey in Arizona, 1 in MPEC 2010-W16 -- 88959
448Desert Moon Obs. in New Mexico, 5 in MPEC 2010-W16 -- 2010 VB72, 2010 UH7, 2010 UE7, 2010 TH19, 2005 WE
379Hamamatsu-Yuto Obs. in Japan, 5 in MPEC 2010-W16 -- 2007 VC138, 2002 VE68, 96590, 100926, 5869
704LINEAR in New Mexico, 1 in MPEC 2010-W17 -- 2010 WL
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-W16 -- 2010 WB
204Schiaparelli Obs. in Italy, 13 in MPEC 2010-W16 -- 2010 VY71, 2010 VT11, 2010 VQ21, 2010 VN65, 2010 VM65, 2010 VJ1, 2010 UO7, 2009 FD, 2007 VC138, 2006 KV89, 2005 UH6, 2003 HQ32, 1997 US2
B18Terskol Obs. in Russia, 1 in MPEC 2010-W17 -- 2010 WL
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-W16 -- 2010 RF181
I15Wishing Star Obs. in Rhode Island, 4 in MPEC 2010-W16 -- 2010 SD13, 2010 LY63, 2010 LF86, 2002 UR3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 November '10

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 CLOMON (backup) risk pages.





Notes for Today's Latest Risk Assessments
2010 VQ98JPL Sentry16552100-210838.4e-06-7.14-7.320JPL: "Analysis based on 41 observations spanning 8.9501 days (2010-Nov-10.43786 to 2010-Nov-19.38793)." Diameter approximately 0.008 km. from mean, weighted H=28.2.
2010 UE51JPL Sentry16552074-207841.8e-04-5.73-6.140JPL: "Analysis based on 160 observations spanning 21.098 days (2010-Oct-29.25716 to 2010-Nov-19.355245)." Diameter approximately 0.007 km. from mean, weighted H=28.3.
NEODyS16552074-207872.32e-04-5.61-6.160NEODyS: "Based on 164 optical observations (of which 4 are rejected as outliers) from 2010-10-29.258 to 2010-11-19.356."

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 21 November '10

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

2359Grabbed MPEC 2010-W17 - 2010 WL - see above
Noted that the NEOCP has become empty
1655Noted that JPL Sentry has updated its 2010 UE51 risk assessment - see above
Noted that NEODyS has updated its 2010 UE51 risk assessment - see above
Noted that JPL Sentry has updated its 2010 VQ98 risk assessment - see above
Grabbed MPEC 2010-W16 - Daily Orbit Update - see above