Contents  on 8 March '09


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 8 March '09

The MPC's NEO Confirmation Page is currently empty

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

New MPECs  on 8 March '09

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2009-E49 - "20:52 UT" - 2009 EQ2

<< DOU on 8 Mar. '09 >>  MPEC 2009-E48 - "07:08 UT" - Daily Orbit Update

Observers  on 8 March '09

Nine observing facilities appear in today's MPECs.

CodeObserver / observatory
B88Bigmuskie Obs., 2 in MPEC 2009-E48 -- 2004 EU9, 164400
B84Cyclops Obs. in The Netherlands, 2 in MPEC 2009-E48 -- 2009 DR3, 68350
J27El Guijo Obs. in Spain, 5 in MPEC 2009-E48 -- 2007 BT2, 2002 CT11, 68350, 161989, 143651
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2009-E48 & 2009-E49 -- 2009 EQ2, 2009 DV43, 161989
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-E48 -- 3103
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2009-E48 & 2009-E49 -- 2009 EQ2, 155334
A24New Millennium Obs. in Italy, 9 in MPEC 2009-E48 -- 2008 EE, 2006 WZ2, 36284, 206359, 203217, 137925, 4179, 3554, 1863
473Remanzacco Obs. in Italy, 1 in MPEC 2009-E49 -- 2009 EQ2
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2009-E48 -- 18882, 1036
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 8 March '09

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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few objects.
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
2009 EN2NEODyS15372022-2089316.34e-09-4.07-4.530NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2009/03/03.523 to 2009/03/07.522."

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 8 March '09

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

2201Grabbed MPEC 2009-E49 - 2009 EQ2 - see above
Noted that the NEOCP has become empty
1537Noted that NEODyS has posted 2009 EN2 as an impact risk - see above
Grabbed MPEC 2009-E48 - Daily Orbit Update - see above