Contents  on 22 January '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 22 January '08

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two updated listings. Both of these 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 22 January '08

Minor Planet Electronic Circulars

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

MPEC 2008-B34 - "13:06 UT" - 2008 BX2

MPEC 2008-B33 - "13:01 UT" - 2008 BW2

MPEC 2008-B32 - "12:57 UT" - 2008 BV2

MPEC 2008-B31 - "12:53 UT" - 2008 BU2

MPEC 2008-B30 - "12:49 UT" - 2008 BT2

MPEC 2008-B29 - "12:36 UT" - 2008 BS2

<< DOU on 22 Jan. '08 >>  MPEC 2008-B28 - "07:09 UT" - Daily Orbit Update

Observers  on 22 January '08

Eight observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 4 in MPECs 2008-B29, 2008-B30, 2008-B31 & 2008-B32 -- 2008 BV2, 2008 BU2, 2008 BT2, 2008 BS2
448Desert Moon Obs. in New Mexico, 1 in MPEC 2008-B31 -- 2008 BU2
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2008-B31 -- 2008 BU2
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2008-B28, 2008-B29, 2008-B30, 2008-B31, 2008-B32, 2008-B33 & 2008-B34 -- 2008 BX2, 2008 BW2, 2008 BV2, 2008 BU2, 2008 BT2, 2008 BS2, 2008 AG4, 162741
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 9 in MPEC 2008-B28 -- 2008 AF4, 2007 YB2, 2005 XD1, 2003 BT35, 2000 CH59, 153591, 136793, 3691, 1620
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-B29 -- 2008 BS2
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2008-B29, 2008-B30, 2008-B31, 2008-B32 & 2008-B34 -- 2008 BX2, 2008 BV2, 2008 BU2, 2008 BT2, 2008 BS2
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-B31 -- 2008 BU2

Impact Risk Monitoring  on 22 January '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 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 AF4JPL Sentry16372089-2099241.8e-05-2.46-2.810JPL: "Analysis based on 205 observations spanning 10.938 days (2008-Jan-10.39652 to 2008-Jan-21.33477)." Diameter approximately 0.380 km. from mean, weighted H=19.7.
NEODyS16372078-2090128.82e-06-2.74-2.800NEODyS: "Based on 208 optical observations (of which 3 are rejected as outliers) from 2008/01/10.397 to 2008/01/21.336."

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 22 January '08

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

1637Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
Grabbed MPEC 2008-B28 - Daily Orbit Update - see above
Grabbed MPEC 2008-B29 - 2008 BS2 - see above
Grabbed MPEC 2008-B30 - 2008 BT2 - see above
Grabbed MPEC 2008-B31 - 2008 BU2 - see above
Grabbed MPEC 2008-B32 - 2008 BV2 - see above
Grabbed MPEC 2008-B33 - 2008 BW2 - see above
Grabbed MPEC 2008-B34 - 2008 BX2 - see above