Contents  on 10 February '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 10 February '09

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one updated listing.

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 10 February '09

Minor Planet Electronic Circulars

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

MPEC 2009-C75 - "18:09 UT" - 2008 KV42

MPEC 2009-C74 - "17:15 UT" - PHAs

MPEC 2009-C73 - "17:15 UT" - Unusual Minor Planets

MPEC 2009-C72 - "17:15 UT" - Amors

MPEC 2009-C71 - "17:15 UT" - Atens and Apollos

MPEC 2009-C70 - "17:03 UT" - Distant Minor Planets

MPEC 2009-C69 - "16:59 UT" - Observable Comets

<< DOU on 10 Feb. '09 >>  MPEC 2009-C68 - "07:06 UT" - Daily Orbit Update

Observers  on 10 February '09

Seven observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 15 in MPEC 2009-C68 -- 2009 CZ, 2009 CV, 2009 CA3, 2009 BE81, 2009 BE77, 2009 BD81, 2009 BB, 2008 YE29, 2008 XE2, 2008 RM98, 2008 QT3, 2008 EE5, 2001 OE84, 1999 CW8, 1998 QE2
160Castelmartini Obs. in Italy, 1 in MPEC 2009-C68 -- 2008 EE5
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-C68 -- 2009 BD81
560Madonna di Dossobuono Obs. in Italy, 4 in MPEC 2009-C68 -- 2008 YE29, 2008 TE157, 2008 RM98, 2008 EE5
568Mauna Kea in Hawaii, 1 in MPEC 2009-C75 -- 2008 KV42
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2009-C68 -- 4179
587Sormano Obs. in Italy, 1 in MPEC 2009-C68 -- 2008 EE5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 February '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 BD81JPL Sentry1605R E M O V E DJPL: Risk listing removed at 1549 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 10 February '09

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

1858Grabbed MPEC 2009-C75 - 2008 KV42 - see above
1735Grabbed MPEC 2009-C69 - Observable Comets - see above
Grabbed MPEC 2009-C70 - Distant Minor Planets - see above
Grabbed MPEC 2009-C71 - Atens and Apollos - see above
Grabbed MPEC 2009-C72 - Amors - see above
Grabbed MPEC 2009-C73 - Unusual Minor Planets - see above
Grabbed MPEC 2009-C74 - PHAs - see above
1605Noted that JPL Sentry has removed 2009 BD81 as an impact risk - see above
1454Grabbed MPEC 2009-C68 - Daily Orbit Update - see above