Contents  on 8 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 8 February '08

The MPC's NEO Confirmation Page has 9 listings: 3 new, 6 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and six updated listings. All of these were "one nighters." So far The Tracking News has counted a total of 25 objects listed on the NEOCP at some point today.

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 8 February '08

Minor Planet Electronic Circulars

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


MPEC 2008-C47 - "20:50 UT" - 2008 CM20


MPEC 2008-C46 - "19:29 UT" - 2008 CL20


MPEC 2008-C45 - "17:09 UT" - 2008 CE6


MPEC 2008-C44 - "17:03 UT" - 2008 CD6


MPEC 2008-C43 - "17:00 UT" - 2008 CC6


MPEC 2008-C42 - "16:57 UT" - 2008 CB6


MPEC 2008-C41 - "16:51 UT" - 2008 CA6


<< DOU on 8 Feb. '08 >>  MPEC 2008-C40 - "07:09 UT" - Daily Orbit Update


MPEC 2008-C39 - "00:55 UT" - 2008 CE5

Observers  on 8 February '08

A total of 28 observing facilities appear in today's MPECs.

CodeObserver / observatory
A81Balzaretto Obs. in Italy, 1 in MPEC 2008-C40 -- 153591
235CAST Obs. in Italy, 1 in MPEC 2008-C40 -- 154347
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2008-C39, 2008-C40 & 2008-C46 -- 2008 CL20, 2008 CE5, 2007 YB2, 2007 PU11, 2005 XD1, 85804, 85628, 35107, 4450, 3752
B24Cesson Obs. in France, 1 in MPEC 2008-C40 -- 3288
B11Cima Rest Obs. in Italy, 1 in MPEC 2008-C40 -- 2001 VK5
448Desert Moon Obs. in New Mexico, 4 in MPEC 2008-C40 -- 2008 CR1, 2008 BE, 2008 AV28, 2007 YF1
113Drebach Obs. in Germany, 1 in MPEC 2008-C39 -- 2008 CE5
151Eschenberg Obs. in Switzerland, 2 in MPEC 2008-C40 -- 2008 BT18, 2008 BD15
143Gnosca Obs. in Switzerland, 1 in MPEC 2008-C47 -- 2008 CM20
651Grasslands Obs. in Arizona, 1 in MPEC 2008-C41 -- 2008 CA6
J95Great Shefford Obs. in England, 1 in MPEC 2008-C47 -- 2008 CM20
A17Guidestar Obs. in Germany, 1 in MPEC 2008-C47 -- 2008 CM20
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2008-C40 -- 2008 AF4, 2007 TU24, 2007 TG8, 2005 TU45
240Herrenberg Obs. in Germany, 2 in MPEC 2008-C40 -- 2000 CH59, 174806
J37Huelva Obs. in Spain, 1 in MPEC 2008-C40 -- 4450
246KLENOT in the Czech Republic, 1 in MPEC 2008-C47 -- 2008 CM20
704LINEAR in New Mexico, 16 in MPEC 2008-C40 -- 2008 CZ4, 2008 CY4, 2008 CQ, 2008 CG, 2007 YK, 2005 BE2, 2004 AR1, 86324, 85804, 68359, 53319, 39565, 35107, 174806, 170891, 144922
474Mt. John Obs. in New Zealand, 4 in MPECs 2008-C40 & 2008-C43 -- 2008 CC6, 2008 CA5, 2008 BQ16, 2007 VC138
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2008-C40, 2008-C41, 2008-C42, 2008-C43, 2008-C44, 2008-C45 & 2008-C47 -- 2008 CM20, 2008 CE6, 2008 CD6, 2008 CC6, 2008 CB6, 2008 CA6, 2008 AU26, 2007 PS9, 86067, 39557, 175189
A13Naef Obs. in Switzerland, 1 in MPEC 2008-C40 -- 2008 CM
J69North Obs. in England, 1 in MPEC 2008-C40 -- 2005 EK70
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 11 in MPEC 2008-C40 -- 2008 CP, 2008 BH16, 2008 BD15, 2008 AF4, 2007 YK, 2007 PS9, 2005 TU45, 1993 TQ2, 22099, 170891, 154347
D29Purple Mtn. Obs. XuYi Station in China, 3 in MPEC 2008-C40 -- 2005 BE2, 2002 CF26, 2000 DP107
691Spacewatch 0.9m telescope in Arizona, 11 in MPECs 2008-C40, 2008-C41 & 2008-C43 -- 2008 CC6, 2008 CA6, 2008 BS2, 2008 BO16, 2007 YF1, 2007 VY7, 2005 OE3, 2003 WC25, 1996 AJ1, 22099, 11398
291Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2008-C40, 2008-C41, 2008-C42, 2008-C43, 2008-C44 & 2008-C45 -- 2008 CS1, 2008 CH, 2008 CF, 2008 CE6, 2008 CD6, 2008 CC6, 2008 CB6, 2008 CA6, 2008 BO16, 2008 AG33, 2005 AN19, 2004 SZ19, 2002 SS41, 1997 XV11
6735Jim Young via Table Mtn. Obs. in southern California, 3 in MPECs 2008-C40 & 2008-C46 -- 2008 CS1, 2008 CL20, 2008 CH
A82Trieste Obs. in Italy, 1 in MPEC 2008-C40 -- 2005 TU45
G72University Hills Obs. in southern California, 2 in MPEC 2008-C40 -- 2007 TU24, 2007 TG8

Impact Risk Monitoring  on 8 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 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 CE6JPL Sentry2006209913.2e-08-7.06-7.060JPL: "Analysis based on 17 observations spanning 1.0145 days (2008-Feb-07.4348 to 2008-Feb-08.44929)." Diameter approximately 0.070 km. from mean, weighted H=23.4.
2008 CD6JPL Sentry21042010-21073392.9e-06-4.69-5.460JPL: "Analysis based on 15 observations spanning 1.0135 days (2008-Feb-07.31686 to 2008-Feb-08.33036)." Diameter approximately 0.062 km. from mean, weighted H=23.7.
2008 CB6JPL Sentry21042035-21071861.9e-05-5.72-5.850JPL: "Analysis based on 15 observations spanning 1.0373 days (2008-Feb-07.29202 to 2008-Feb-08.32932)." Diameter approximately 0.014 km. from mean, weighted H=26.9.
2008 CA5NEODyS15052010-2081157.15e-10-5.44-5.480NEODyS: "Based on 30 optical observations (of which 1 are rejected as outliers) from 2008/02/06.484 to 2008/02/07.671."
JPL Sentry15042010-210761.9e-09-4.92-4.950JPL: "Analysis based on 29 observations spanning 1.1870 days (2008-Feb-06.48341 to 2008-Feb-07.67037)." Diameter approximately 0.351 km. from mean, weighted H=19.9.
2008 CS1NEODyS15052032-2090291.7e-06-3.09-3.430NEODyS: "Based on 21 optical observations (of which 2 are rejected as outliers) from 2008/02/03.503 to 2008/02/07.516."
JPL Sentry15042032-2103382.1e-06-3.01-3.400JPL: "Analysis based on 20 observations spanning 4.0139 days (2008-Feb-03.50178 to 2008-Feb-07.51572)." Diameter approximately 0.310 km. from mean, weighted H=20.2.
2008 BO16NEODyS1505204512.57e-06-4.09-4.090NEODyS: "Based on 36 optical observations (of which 1 are rejected as outliers) from 2008/01/30.382 to 2008/02/07.287."
JPL Sentry15042045-204922.7e-06-4.08-4.080JPL: "Analysis based on 35 observations spanning 7.9050 days (2008-Jan-30.38083 to 2008-Feb-07.28587)." Diameter approximately 0.086 km. from mean, weighted H=23.0.
2008 AF4NEODyS15052067-2091208.67e-06-2.74-2.970NEODyS: "Based on 413 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/02/07.717."
JPL Sentry15042078-2105353.1e-05-2.21-2.920JPL: "Analysis based on 409 observations spanning 28.320 days (2008-Jan-10.39652 to 2008-Feb-07.7166)." Diameter approximately 0.390 km. from mean, weighted H=19.7.

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 8 February '08

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

2104Noted that JPL Sentry has posted 2008 CB6 as an impact risk - see above
Noted that JPL Sentry has posted 2008 CD6 as an impact risk - see above
Grabbed MPEC 2008-C47 - 2008 CM20 - see above
2006Noted that JPL Sentry has posted 2008 CE6 as an impact risk - see above
Grabbed MPEC 2008-C46 - 2008 CL20 - see above
1730Grabbed MPEC 2008-C44 - 2008 CD6 - see above
Grabbed MPEC 2008-C45 - 2008 CE6 - see above
1703Grabbed MPEC 2008-C41 - 2008 CA6 - see above
Grabbed MPEC 2008-C42 - 2008 CB6 - see above
Grabbed MPEC 2008-C43 - 2008 CC6 - see above
1505Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
Noted that NEODyS has updated its 2008 BO16 risk assessment - see above
Noted that NEODyS has updated its 2008 CS1 risk assessment - see above
Grabbed MPEC 2008-C40 - Daily Orbit Update - see above
1504Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
Noted that JPL Sentry has updated its 2008 BO16 risk assessment - see above
Noted that JPL Sentry has updated its 2008 CA5 risk assessment - see above
Noted that NEODyS has posted 2008 CA5 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 CS1 risk assessment - see above
0316Grabbed MPEC 2008-C39 - 2008 CE5 - see above