Contents  on 19 March '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 March '08

The MPC's NEO Confirmation Page has 5 listings: 2 new, 3 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and three updated listings. Of these, four were "one nighters."

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 19 March '08

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-F10 - "22:45 UT" - 2006 QH181

MPEC 2008-F09 - "12:00 UT" - 2006 UM216

<< DOU on 19 Mar. '08 >>  MPEC 2008-F08 - "06:10 UT" - Daily Orbit Update

Observers  on 19 March '08

Eight observing facilities appear in today's MPECs.

CodeObserver / observatory
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-F08 -- 35107
B15Inastars Obs. in Germany, 4 in MPEC 2008-F08 -- 2008 CZ118, 2008 AE, 2005 SE71, 177651
J76La Murta Obs. in Spain, 1 in MPEC 2008-F08 -- 164222
568Mauna Kea in Hawaii, 1 in MPEC 2008-F10 -- 2006 QH181
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2008-F08 & 2008-F09 -- 2008 AZ110, 2006 UM216
691Spacewatch 0.9m telescope in Arizona, 11 in MPEC 2008-F08 -- 2008 EY68, 2008 ET7, 2008 DJ5, 2008 DH23, 2007 NS4, 2006 FV35, 2002 RU25, 141614, 136874, 10145, 3552
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-F08 -- 2008 EM85
G72University Hills Obs. in southern California, 1 in MPEC 2008-F08 -- 2008 EM85
198Wildberg Obs. in Germany, 2 in MPEC 2008-F08 -- 2008 EM85, 2008 AE

Impact Risk Monitoring  on 19 March '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
2007 FY20JPL Sentry23542085-210171.1e-06-6.18-6.490JPL #2 for the day: "Analysis based on 1 radar Doppler and 59 optical observations spanning 6.6674 days (2007-Mar-26.2031 to 2007-Apr-01.870482)." Diameter approximately 0.037 km. from mean, weighted H=24.8.
NEODyS15292085-209073.15e-06-5.67-5.870NEODyS: "Based on 59 optical observations (of which 0 are rejected as outliers) from 2007/03/26.203 to 2007/04/01.870, and also on one radar data point on 2007/03/31."

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 March '08

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

2354Noted that JPL Sentry has updated its 2007 FY20 risk assessment - see above
2301Grabbed MPEC 2008-F10 - 2006 QH181 - see above
1529Noted that NEODyS has updated its 2007 FY20 risk assessment - see above
1451Grabbed MPEC 2008-F08 - Daily Orbit Update - see above
Grabbed MPEC 2008-F09 - 2006 UM216 - see above
0425Noted that JPL Sentry has updated its 2007 FY20 risk assessment - see above