Contents  on 20 May '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 20 May '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 (last checked at 2354 UTC).

New MPECs  on 20 May '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.

<< DOU on 20 May '08 >>  MPEC 2008-K17 - "06:08 UT" - Daily Orbit Update

MPEC 2008-K16 - "04:39 UT" - 2005 CF41 = 2008 JN20

Observers  on 20 May '08

Six observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 22 in MPEC 2008-K17 -- 2008 JZ7, 2008 JV19, 2008 JS26, 2008 JS19, 2008 JR14, 2008 JQ14, 2008 JO14, 2008 JO, 2008 JN, 2008 JM20, 2008 JG, 2008 HS3, 2008 HD3, 2008 GX, 2008 GV3, 2008 GR3, 2008 GO20, 2008 GH110, 2008 GC110, 2008 GA110, 2008 CP23, 2007 VR183
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2008-K17 -- 2008 JL24
H51Greiner Research Obs. (GRO) in Wisconsin, 9 in MPEC 2008-K17 -- 2008 JU2, 2008 JP14, 2008 JJ, 2008 HS3, 2007 VR183, 2007 VQ4, 2005 NZ6, 2005 NB7, 2002 JC
932McCarthy Obs. in Connecticut, 2 in MPEC 2008-K17 -- 2008 JU2, 2008 HS3
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2008-K17 -- 2008 JU2, 2000 AD205, 35107, 154278
204Schiaparelli Obs. in Italy, 1 in MPEC 2008-K16 -- 2008 JN20
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 May '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2354 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 JL24JPL Sentry1330209113.6e-07-9.10-9.100JPL: "Analysis based on 88 observations spanning 5.3657 days (2008-May-11.25353 to 2008-May-16.61927)." Diameter approximately 0.004 km. from mean, weighted H=29.6.

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 20 May '08

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

1330Noted that JPL Sentry has updated its 2008 JL24 risk assessment - see above
Grabbed MPEC 2008-K16 - 2005 CF41 = 2008 JN20 - see above
Grabbed MPEC 2008-K17 - Daily Orbit Update - see above