Contents  on 19 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 19 May '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 19 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.

MPEC 2008-K15 - "14:18 UT" - Comet C/2008 J4 (McNaught)

<< DOU on 19 May '08 >>  MPEC 2008-K14 - "06:07 UT" - Daily Orbit Update

Observers  on 19 May '08

Five observing facilities appear in today's MPECs.

CodeObserver / observatory
J24Altamira Obs., 1 in MPEC 2008-K15 -- C/2008 J4
H55Astronomical Research Obs. (ARO) in Illinois, 5 in MPEC 2008-K14 -- 2008 JZ7, 2008 JW19, 2008 JR26, 2008 GX, 2008 CP23
649Powell Obs. in Kansas, 4 in MPEC 2008-K14 -- 2008 JU2, 2008 JN20, 2008 JJ, 2008 HS3
204Schiaparelli Obs. in Italy, 18 in MPEC 2008-K14 -- 2008 JU2, 2008 JO14, 2008 JO, 2008 JN20, 2008 JN, 2008 JM20, 2008 JL24, 2008 HW1, 2008 HR3, 2008 HJ3, 2008 HD3, 2008 FN6, 2008 FN, 2008 EZ97, 2006 HR29, 2003 KO2, 2001 HY7, 86667
F85Tiki Obs. in Tahiti, 2 in MPEC 2008-K14 -- 2008 JY30, 2008 JW2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 May '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2355 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 Sentry1423209113.6e-07-9.09-9.090JPL: "Analysis based on 86 observations spanning 5.0008 days (2008-May-11.25353 to 2008-May-16.25433)." 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 19 May '08

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

1423Noted that JPL Sentry has updated its 2008 JL24 risk assessment - see above
Grabbed MPEC 2008-K14 - Daily Orbit Update - see above
Grabbed MPEC 2008-K15 - Comet C/2008 J4 (McNaught) - see above
The NEOCP has become empty