Contents  on 17 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.

Radar Astrometry  on 17 November '08

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added the following small-body radar observing work:

Data addition noted at 1959 UTC when the database was dated 17 Nov.

NEOCP Activity  on 17 November '08

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of five objects listed on the NEOCP at some point today.

New MPECs  on 17 November '08

Minor Planet Electronic Circulars

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

<< DOU on 17 Nov. '08 >>  MPEC 2008-W05 - "07:06 UT" - Daily Orbit Update

Observers  on 17 November '08

Twelve observing facilities appear in today's MPEC.

CodeObserver / observatory
251Arecibo in Puerto Rico, 1 in radar -- 53319
B20Carmelita Obs. in Spain, 1 in MPEC 2008-W05 -- 1620
448Desert Moon Obs. in New Mexico, 3 in MPEC 2008-W05 -- 2008 VU4, 2008 UN90, 2008 SJ82
J27El Guijo Obs. in Spain, 1 in MPEC 2008-W05 -- 199801
240Herrenberg Obs. in Germany, 3 in MPEC 2008-W05 -- 90403, 65996, 3360
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-W05 -- 3360
A53Peschiera del Garda Obs. in Italy, 4 in MPEC 2008-W05 -- 2008 SQ1, 2008 SP7, 2008 SE, 2005 WS55
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2008-W05 -- 2008 UE7, 2003 WX25, 2002 VY94
587Sormano Obs. in Italy, 3 in MPEC 2008-W05 -- 2008 VZ3, 2008 VU4, 2008 UE7
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2008-W05 -- 2008 VL14, 2008 VH14, 2008 UW91, 2001 TD45
A78Stia Obs. in Italy, 4 in MPEC 2008-W05 -- 2008 VZ3, 2008 VU4, 2008 UT5, 2008 US4
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-W05 -- 2004 EN20
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 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 VL14JPL Sentry13222060-210751.5e-06-3.53-3.650JPL: "Analysis based on 27 observations spanning 7.9540 days (2008-Nov-09.2656 to 2008-Nov-17.21961)." Diameter approximately 0.223 km. from mean, weighted H=20.9.
NEODyS13222060-207631.22e-06-3.57-3.640NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2008/11/09.266 to 2008/11/17.220."
2008 VH14JPL Sentry1322R E M O V E DJPL: Risk listing removed at 0949 UTC.
NEODyS1322R E M O V E D-

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 17 November '08

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

1959Noted Radar Astrometry database addition - see above
1323Grabbed MPEC 2008-W05 - Daily Orbit Update - see above
1322Noted that JPL Sentry has removed 2008 VH14 as an impact risk - see above
Noted that NEODyS has removed 2008 VH14 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 VL14 risk assessment - see above
Noted that NEODyS has updated its 2008 VL14 risk assessment - see above