Contents  on 16 August '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 August '08

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There was one listing noted earlier today.

New MPECs  on 16 August '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 16 Aug. '08 >>  MPEC 2008-Q01 - "06:10 UT" - Daily Orbit Update

Observers  on 16 August '08

Four observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 36 in MPEC 2008-Q01 -- 2008 PW4, 2008 PV16, 2008 PJ9, 2008 PF2, 2008 PF1, 2008 OX2, 2008 OP8, 2008 OO, 2008 MR1, 2008 KZ5, 2008 JZ30, 2007 RT12, 2006 WZ2, 2006 SZ217, 2006 AL3, 2005 WS55, 2005 TZ51, 2005 RD34, 2005 RC34, 2005 BC, 2004 XN44, 2004 NL8, 2004 LV3, 2003 OB4, 2003 CN17, 2002 WP11, 2002 RW25, 2001 TA45, 2001 RV17, 2001 QH96, 2001 LM5, 2001 LE6, 2000 RL77, 1999 YF3, 1999 SO5, 1994 AW1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-Q01 -- 2004 XN44
J41Raheny Obs. in Ireland, 3 in MPEC 2008-Q01 -- 90403, 16960, 8567
204Schiaparelli Obs. in Italy, 2 in MPEC 2008-Q01 -- 2003 OB4, 1917
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 August '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 PJ9NEODyS1514207112.23e-11-9.16-9.160NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2008/08/06.594 to 2008/08/14.267."
JPL Sentry1514R E M O V E DJPL: Risk listing removed at 0850 UTC.

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 August '08

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

1514Noted that JPL Sentry has removed 2008 PJ9 as an impact risk - see above
Noted that NEODyS has updated its 2008 PJ9 risk assessment - see above
Grabbed MPEC 2008-Q01 - Daily Orbit Update - see above
The NEOCP has become empty