Contents  on 13 October '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 13 October '08

The MPC's NEO Confirmation Page has 7 listings: 7 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seven updated listings. Of these, one was a "one nighter."

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 13 October '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 13 Oct. '08 >>  MPEC 2008-T125 - "06:10 UT" - Daily Orbit Update

Observers  on 13 October '08

Eight observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 8 in MPEC 2008-T125 -- 2008 TX3, 2008 TT26, 2008 TK9, 2008 TC2, 2008 TA4, 2008 ST7, 2008 SH82, 2003 GY
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2008-T125 -- 53319, 2201
J95Great Shefford Obs. in England, 3 in MPEC 2008-T125 -- 2008 TT26, 2008 TC4, 2008 TA4
B15Inastars Obs. in Germany, 2 in MPEC 2008-T125 -- 2005 WS55, 141079
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-T125 -- 2004 XA45
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2008-T125 -- 31221
204Schiaparelli Obs. in Italy, 5 in MPEC 2008-T125 -- 2008 TV25, 2008 RT, 2001 TW1, 2000 FL1, 1627
611Starkenburg Obs. in Germany, 1 in MPEC 2008-T125 -- 2008 TC3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 October '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 SH82JPL Sentry1542208113.8e-08-5.76-5.760JPL: "Analysis based on 48 observations spanning 15.824 days (2008-Sep-26.21299 to 2008-Oct-12.03706)." Diameter approximately 0.210 km. from mean, weighted H=21.0.
NEODyS1542208113.66e-08-5.81-5.810NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/10/12.038."
2008 ST7JPL Sentry15422073-2108335.1e-05-4.20-4.500JPL: "Analysis based on 99 observations spanning 17.915 days (2008-Sep-24.29993 to 2008-Oct-12.21517)." Diameter approximately 0.051 km. from mean, weighted H=24.1.
NEODyS15422062-2089136.56e-07-5.93-6.140NEODyS: "Based on 105 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/10/12.216."

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 13 October '08

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

1542Noted that JPL Sentry has updated its 2008 SH82 risk assessment - see above
Noted that NEODyS has updated its 2008 SH82 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ST7 risk assessment - see above
Noted that NEODyS has updated its 2008 ST7 risk assessment - see above
Grabbed MPEC 2008-T125 - Daily Orbit Update - see above