Contents  on 29 November '08


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 29 November '08

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 2358 UTC). It was last noted active yesterday.

New MPECs  on 29 November '08

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-W83 - "18:57 UT" - 2006 WE4

<< DOU on 29 Nov. '08 >>  MPEC 2008-W82 - "07:09 UT" - Daily Orbit Update

MPEC 2008-W81 - "05:00 UT" - 2007 FV42 = 1991 RQ32

Observers  on 29 November '08

Twelve observing facilities appear in today's MPECs.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2008-W82 -- 2008 TK157
H55Astronomical Research Obs. (ARO) in Illinois, 27 in MPECs 2008-W81 & 2008-W82 -- 2008 WZ13, 2008 WN, 2008 WM61, 2008 WM32, 2008 WL61, 2008 WL60, 2008 WL, 2008 WK61, 2008 WK, 2008 WJ60, 2008 WG14, 2008 WC14, 2008 WB59, 2008 WB14, 2008 WA14, 2008 VK14, 2008 VF, 2008 VE, 2008 UT5, 2008 UE7, 2008 TE157, 2008 SV7, 2008 RT26, 2008 QS11, 2008 NB, 2007 FV42, 2000 FL1
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-W82 -- 2005 XY
127Bornheim Obs. in Germany, 5 in MPEC 2008-W82 -- 2008 SE, 16960, 164400, 162900, 1620
106Crni Vrh Obs. in Slovenia, 2 in MPEC 2008-W82 -- 85774, 31221
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2008-W82 -- 2008 UE7, 2006 SZ217
F84Hibiscus Obs. in Tahiti, 1 in MPEC 2008-W82 -- 2001 XQ
B15Inastars Obs. in Germany, 1 in MPEC 2008-W82 -- 185851
J75La Sagra Obs. in Spain, 1 in MPEC 2008-W83 -- 2006 WE4
540Linz Obs. in Austria, 1 in MPEC 2008-W82 -- 2008 WH60
434San Benedetto Po Obs. in Italy, 3 in MPEC 2008-W82 -- 2008 SQ1, 2005 TZ51, 3200
204Schiaparelli Obs. in Italy, 6 in MPEC 2008-W82 -- 2008 WM61, 2008 WH60, 2008 WC, 2008 WB59, 2006 SZ217, 36236
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 November '08

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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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
2008 WZ13NEODyS15342023-2090311.13e-06-2.68-2.920NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2008/11/20.276 to 2008/11/28.091."
JPL Sentry15332023-2107651.3e-06-2.63-2.870JPL: "Analysis based on 37 observations spanning 7.8147 days (2008-Nov-20.27557 to 2008-Nov-28.09031)." Diameter approximately 0.587 km. from mean, weighted H=18.8.

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 29 November '08

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

1959Grabbed MPEC 2008-W83 - 2006 WE4 - see above
1534Noted that NEODyS has updated its 2008 WZ13 risk assessment - see above
Grabbed MPEC 2008-W82 - Daily Orbit Update - see above
1533Noted that JPL Sentry has updated its 2008 WZ13 risk assessment - see above
0535Grabbed MPEC 2008-W81 - 2007 FV42 = 1991 RQ32 - see above