Contents  on 30 January '08

Resources:

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.

Radar Astrometry  on 30 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 2000 UTC when the database was dated 30 Jan.

NEOCP Activity  on 30 January '08

The MPC's NEO Confirmation Page has 5 listings: 4 new, 1 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and one updated listings. All of these were "one nighters." So far The Tracking News has counted a total of ten objects listed on the NEOCP at some point today.

New MPECs  on 30 January '08

Minor Planet Electronic Circulars

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


MPEC 2008-B66 - "23:32 UT" - 2008 BH16


MPEC 2008-B65 - "16:54 UT" - 2008 BE15


MPEC 2008-B64 - "16:48 UT" - 2008 BD15


MPEC 2008-B63 - "16:45 UT" - 2008 BC15


<< DOU on 30 Jan. '08 >>  MPEC 2008-B62 - "07:09 UT" - Daily Orbit Update

Observers  on 30 January '08

Nineteen observing facilities appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 1 in radar -- 2007 TU24
H55Astronomical Research Obs. (ARO) in Illinois, 20 in MPEC 2008-B62 -- 2008 AZ30, 2008 AV28, 2008 AN33, 2008 AM33, 2008 AL33, 2007 YZ58, 2007 YO56, 2007 YM56, 2007 YF1, 2007 XK11, 2007 WY3, 2007 TC23, 2007 EH88, 2003 BT35, 2002 SZ, 2000 EJ26, 1993 UD, 99248, 162161, 3102
A81Balzaretto Obs. in Italy, 1 in MPEC 2008-B62 -- 2008 AF4
235CAST Obs. in Italy, 1 in MPEC 2008-B62 -- 2007 TU24
703Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2008-B62, 2008-B63, 2008-B64, 2008-B65 & 2008-B66 -- 2008 BH16, 2008 BE15, 2008 BD15, 2008 BC15, 21374, 154555
176Consell Obs. in Spain, 2 in MPEC 2008-B62 -- 2008 AF4, 2007 TU24
H98Dark Roseanne Obs. in Connecticut, 1 in MPEC 2008-B62 -- 153591
734Farpoint Obs. in Kansas, 4 in MPECs 2008-B63, 2008-B64, 2008-B65 & 2008-B66 -- 2008 BH16, 2008 BE15, 2008 BD15, 2008 BC15
143Gnosca Obs. in Switzerland, 1 in MPEC 2008-B62 -- 2007 YV29
256Green Bank in West Virginia, 1 in radar -- 2007 TU24
704LINEAR in New Mexico, 6 in MPEC 2008-B62 -- 34613, 33342, 18736, 136793, 101869, 4954
B28Mandi Obs. in Italy, 1 in MPEC 2008-B62 -- 2000 CH59
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-B62 -- 2007 TU24
649Powell Obs. in Kansas, 3 in MPEC 2008-B62 -- 2008 AF4, 2008 AF32, 2007 YV56
473Remanzacco Obs. in Italy, 1 in MPEC 2008-B62 -- 2007 TU24
B40Skylive Obs. in Italy, 1 in MPEC 2008-B66 -- 2008 BH16
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2008-B62 -- 2008 AZ30, 2008 AV28, 2008 AK33, 2007 YQ56
A78Stia Obs. in Italy, 1 in MPEC 2008-B62 -- 2007 TU24
A48Verona Obs. in Italy, 1 in MPEC 2008-B62 -- 2007 TU24

Impact Risk Monitoring  on 30 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.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2008 BE15JPL Sentry20002027-2098247.4e-08-6.94-7.250JPL: "Analysis based on 16 observations spanning .09912 days (2008-Jan-30.3833 to 2008-Jan-30.48242)." Diameter approximately 0.039 km. from mean, weighted H=24.7.
2008 BC15JPL Sentry20002049-2105141.1e-06-6.70-7.090JPL: "Analysis based on 20 observations spanning .17309 days (2008-Jan-30.31193 to 2008-Jan-30.48502)." Diameter approximately 0.016 km. from mean, weighted H=26.7.
2008 AF4JPL Sentry15132088-2100241.5e-05-2.55-3.230JPL: "Analysis based on 319 observations spanning 19.804 days (2008-Jan-10.39652 to 2008-Jan-30.20027)." Diameter approximately 0.380 km. from mean, weighted H=19.8.
NEODyS15132078-2090153.25e-06-3.19-3.340NEODyS: "Based on 323 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/01/30.201."
2007 YV56JPL Sentry1513210811.9e-09-6.87-6.870JPL: "Analysis based on 89 observations spanning 29.723 days (2007-Dec-31.5148 to 2008-Jan-30.2382)." Diameter approximately 0.220 km. from mean, weighted H=21.0.

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 30 January '08

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

2354Grabbed MPEC 2008-B66 - 2008 BH16 - see above
2000Noted that JPL Sentry has posted 2008 BC15 as an impact risk - see above
Noted that JPL Sentry has posted 2008 BE15 as an impact risk - see above
Noted Radar Astrometry database addition
1706Grabbed MPEC 2008-B63 - 2008 BC15 - see above
Grabbed MPEC 2008-B64 - 2008 BD15 - see above
Grabbed MPEC 2008-B65 - 2008 BE15 - see above
1513Noted that JPL Sentry has reposted 2007 YV56 as an impact risk - see above
Noted 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-B62 - Daily Orbit Update - see above
0640The NEOCP has become active