Contents  on 26 January '08


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Radar Astrometry  on 26 January '08

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added the following small-body radar observing work:

Data addition noted at 1528 UTC when the database was dated 26 Jan.

NEOCP Activity  on 26 January '08

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

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter."

New MPECs  on 26 January '08

Minor Planet Electronic Circulars

There was one MPEC issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 26 Jan. '08 >>  MPEC 2008-B50 - "07:06 UT" - Daily Orbit Update

Observers  on 26 January '08

Twelve observing facilities appeared in this day's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2008-B50 -- 2007 WF55
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2008-B50 -- 2007 VQ4
A81Balzaretto Obs. in Italy, 3 in MPEC 2008-B50 -- 2005 TU45, 170891, 153591
A77Chante-Perdrix Obs. in France, 1 in MPEC 2008-B50 -- 2007 TU24
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 2007 TU24
H51Greiner Research Obs. in Wisconsin, 1 in MPEC 2008-B50 -- 2008 AF4
246KLENOT in the Czech Republic, 2 in MPEC 2008-B50 -- 2007 TU24, 2004 XP164
046Klet Obs. in the Czech Republic, 1 in MPEC 2008-B50 -- 2007 TU24
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-B50 -- 2008 AF4
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-B50 -- 2007 XJ20
204Schiaparelli Obs. in Italy, 2 in MPEC 2008-B50 -- 2007 TU24, 2005 TU45
147Suno Obs. in Italy, 1 in MPEC 2008-B50 -- 2008 AF4

Impact Risk Monitoring  on 26 January '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2354 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 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 AF4NEODyS15282078-208991.54e-06-3.51-3.640NEODyS: "Based on 280 optical observations (of which 3 are rejected as outliers) from 2008/01/10.397 to 2008/01/26.072."

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 26 January '08

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

2039The NEOCP has become active
1528Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
Grabbed MPEC 2008-B50 - Daily Orbit Update - see above
Noted Radar Astrometry database addition