Contents  on 17 February '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.

NEOCP Activity  on 17 February '08

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

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter."

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 17 February '08

Minor Planet Electronic Circulars

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


<< DOU on 17 Feb. '08 >>  MPEC 2008-D05 - "07:09 UT" - Daily Orbit Update

Observers  on 17 February '08

Fifteen observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 11 in MPEC 2008-D05 -- 2008 CY21, 2008 CO116, 2008 CK116, 2008 CE22, 2008 CD22, 2008 CC175, 2008 CB175, 2008 BU2, 2008 AJ33, 2007 WV3, 2007 WF55
A81Balzaretto Obs. in Italy, 2 in MPEC 2008-D05 -- 2008 CD22, 153591
B48Bocholt Obs. in Germany, 2 in MPEC 2008-D05 -- 68359, 40267
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-D05 -- 2008 CK119
J95Great Shefford Obs. in England, 5 in MPEC 2008-D05 -- 2008 CM20, 2008 CC175, 2008 CB175, 2008 AF4, 2003 WP25
A17Guidestar Obs. in Germany, 3 in MPEC 2008-D05 -- 2008 CZ118, 2008 CB22, 2004 SB20
B15Inastars Obs. in Germany, 1 in MPEC 2008-D05 -- 2008 CC6
246KLENOT in the Czech Republic, 7 in MPEC 2008-D05 -- 2008 CR116, 2008 CP116, 2008 CN1, 2008 CD22, 2008 CC6, 2008 AF4, 2000 DP107
046Klet Obs. in the Czech Republic, 6 in MPEC 2008-D05 -- 2008 CR116, 2008 CN1, 2008 CL1, 2008 CD22, 2008 CC6, 2008 AF4
560Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2008-D05 -- 2008 CN1, 2008 AF4, 1620
J69North Obs. in England, 3 in MPEC 2008-D05 -- 2005 EK70, 153591, 4450
A53Peschiera del Garda Obs. in Italy, 4 in MPEC 2008-D05 -- 2008 CN1, 2008 AF4, 2007 TG8, 2005 TU45
204Schiaparelli Obs. in Italy, 1 in MPEC 2008-D05 -- 2008 CM74
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2008-D05 -- 2008 CG119, 2003 GW, 173689
A97Stammersdorf Obs. in Austria, 2 in MPEC 2008-D05 -- 2008 CN1, 153591

Impact Risk Monitoring  on 17 February '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.
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 CG119NEODyS1525R E M O V E D
2008 CM74JPL Sentry15252079-210071.8e-06-7.67-7.990JPL: "Analysis based on 17 observations spanning 6.8352 days (2008-Feb-08.36778 to 2008-Feb-15.20297)." Diameter approximately 0.008 km. from mean, weighted H=28.0.
NEODyS15252069-208121.71e-08-9.55-9.670NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2008/02/08.369 to 2008/02/15.204."
2008 AF4JPL Sentry15252078-2101261.9e-05-2.41-2.680JPL: "Analysis based on 534 observations spanning 37.725 days (2008-Jan-10.39652 to 2008-Feb-17.12131)." Diameter approximately 0.390 km. from mean, weighted H=19.7.
NEODyS15252078-2090101.2e-05-2.59-2.680NEODyS: "Based on 538 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/02/17.122."

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 17 February '08

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

1525Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
Noted that NEODyS has removed 2008 CG119 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 CM74 risk assessment - see above
Noted that NEODyS has updated its 2008 CM74 risk assessment - see above
Grabbed MPEC 2008-D05 - Daily Orbit Update - see above