Contents  on 11 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 11 November '11

The MPC's NEO Confirmation Page has 5 listings

When last checked at 2345 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five objects listed. Of these, two 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 11 November '11

Minor Planet Electronic Circulars

As of last check at 2344 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2011-V37 - "16:52 UT" - 2006 WN3

<< DOU on 11 Nov. '11 >>  MPEC 2011-V36 - "06:02 UT" - Daily Orbit Update

Observers  on 11 November '11

A total of 21 observers appear in today's MPECs.

CodeObserver / observatory
C60Argelander Institute for Astronomy Obs. in Germany, 1 in MPEC 2011-V36 -- 2005 YU55
H21Astronomical Research Obs. Westfield in Illinois, 9 in MPECs 2011-V36 & 2011-V37 -- 2011 UZ275, 2011 US63, 2011 UD21, 2011 UA, 2011 OV4, 2011 OQ5, 2011 MD11, 2006 WN3, 2004 JO2
A81Balzaretto Obs. in Italy, 1 in MPEC 2011-V36 -- 2005 YU55
300Bisei Spaceguard Center in Japan, 1 in MPEC 2011-V36 -- 2011 GA55
G51Byrne Obs. in southern California, 1 in MPEC 2011-V36 -- 2005 YU55
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPEC 2011-V36 -- 2011 UZ275, 2011 SR69, 2011 QF14, 2011 QD48, 2011 OL51, 2011 MD11, 2011 GD62, 2004 QB17
448Desert Moon Obs. in New Mexico, 4 in MPEC 2011-V36 -- 2011 UT20, 2011 UA, 2005 YU55, 24475
I88Fuensanta de Martos Obs., 1 in MPEC 2011-V36 -- 2005 YU55
J95Great Shefford Obs. in England, 1 in MPEC 2011-V36 -- 2005 YU55
D95Kurihara Obs. in Japan, 1 in MPEC 2011-V36 -- 2005 YU55
B33Libbiano Obs. in Italy, 1 in MPEC 2011-V36 -- 2005 YU55
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2011-V36 -- 2011 PT
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2011-V36 -- 2005 YU55
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2011-V36 -- 54071
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2011-V36 -- 155110
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2011-V36 -- 2005 YU55
461SZTE Asteroid Program in Hungary, 2 in MPEC 2011-V36 -- 2009 DO111, 2005 YU55
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2011-V36 -- 2005 YU55
H36Sandlot Obs. in Kansas, 1 in MPEC 2011-V36 -- 2011 VV5
B56Sant Pere Obs. in Spain, 1 in MPEC 2011-V36 -- 2005 YU55
C35Terrassa Obs., 1 in MPEC 2011-V36 -- 2005 YU55
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 November '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2345 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 UD21JPL Sentry1516210513.9e-06-7.63-7.630JPL: "Analysis based on 78 observations spanning 17.714 days (2011-Oct-18.42484 to 2011-Nov-05.138484)." Diameter approximately 0.007 km. from mean, weighted H=28.5.

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 11 November '11

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

1659Grabbed MPEC 2011-V37 - 2006 WN3 - see above
1516Noted that JPL Sentry has updated its 2011 UD21 risk assessment - see above
Grabbed MPEC 2011-V36 - Daily Orbit Update - see above