Contents  on 16 July '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 16 July '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 2357 UTC). It was last noted active yesterday.

New MPECs  on 16 July '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-O02 - "17:32 UT" - 2008 KV42

<< DOU on 16 July '08 >>  MPEC 2008-O01 - "06:07 UT" - Daily Orbit Update

Observers  on 16 July '08

Six observing facilities appear in today's MPECs.

CodeObserver / observatory
807Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2008-O02 -- 2008 KV42
J59Linceo Obs. in Spain, 1 in MPEC 2008-O01 -- 7889
568Mauna Kea in Hawaii, 1 in MPEC 2008-O02 -- 2008 KV42
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2008-O01 -- 2005 TU45, 2003 OB4, 2001 TA45, 173689, 11398, 8567
204Schiaparelli Obs. in Italy, 2 in MPEC 2008-O01 -- 2008 NX, 2000 UT16
696Whipple Obs. in Arizona, 1 in MPEC 2008-O02 -- 2008 KV42
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 July '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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 NQ3JPL Sentry0129208512.6e-10-7.24-7.240JPL: "Analysis based on 19 observations spanning 1.1081 days (2008-Jul-14.71715 to 2008-Jul-15.82529)." Diameter approximately 0.310 km. from mean, weighted H=20.2.
2008 NO3NEODyS14542027-208256.44e-10-5.63-5.890NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2008/07/14.365 to 2008/07/15.391."
JPL Sentry01292010-2105141.1e-08-4.51-4.600JPL: "Analysis based on 9 observations spanning 1.0263 days (2008-Jul-14.36382 to 2008-Jul-15.39011)." Diameter approximately 0.467 km. from mean, weighted H=19.3.

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 16 July '08

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

1859Grabbed MPEC 2008-O02 - 2008 KV42 - see above
1454Noted that NEODyS has posted 2008 NO3 as an impact risk - see above
Grabbed MPEC 2008-O01 - Daily Orbit Update - see above
0128Noted that JPL Sentry has posted 2008 NO3 as an impact risk - see above
Noted that JPL Sentry has posted 2008 NQ3 as an impact risk - see above