Contents  on 13 March '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 13 March '08

The MPC's NEO Confirmation Page has 25 listings: 22 new, 3 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had 22 new and three updated listings. All of these were "one nighters."

New MPECs  on 13 March '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 13 Mar. '08 >>  MPEC 2008-E106 - "06:09 UT" - Daily Orbit Update

Observers  on 13 March '08

Thirteen observing facilities appear in today's MPEC.

CodeObserver / observatory
169Airali Obs. in Italy, 1 in MPEC 2008-E106 -- 1620
H55Astronomical Research Obs. (ARO) in Illinois, 14 in MPEC 2008-E106 -- 2008 EV68, 2008 EF, 2008 EE5, 2008 DY, 2008 DX22, 2008 DW, 2008 DG5, 2008 DG4, 2008 DA4, 2008 CB175, 2008 CA22, 2008 BT2, 2008 AN33, 2003 DC14
A81Balzaretto Obs. in Italy, 1 in MPEC 2008-E106 -- 2008 CL1
703Catalina Sky Survey (CSS) in Arizona, 12 in MPEC 2008-E106 -- 2008 EL, 2008 EG32, 2008 EE9, 2008 DJ, 2008 CZ118, 2008 CH, 2008 CB22, 2007 TU24, 2005 RD34, 2005 EA, 2002 TD66, 9856
H51Greiner Research Obs. in Wisconsin, 1 in MPEC 2008-E106 -- 2007 RX19
046Klet Obs. in the Czech Republic, 1 in MPEC 2008-E106 -- 2008 EL
704LINEAR in New Mexico, 11 in MPEC 2008-E106 -- 2008 DW, 2008 CR118, 2007 YK, 2007 TG8, 2004 XN44, 85839, 143678, 138205, 136618, 9162, 3552
809|program code "|" via La Silla in Chile, 3 in MPEC 2008-E106 -- 2008 ER7, 2008 EA8, 2005 GE59
560Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2008-E106 -- 2007 TG8, 2005 BE2, 2000 DP107
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-E106 -- 2007 EL
J42Puzol Obs. in Spain, 1 in MPEC 2008-E106 -- 4954
691Spacewatch 0.9m telescope in Arizona, 8 in MPEC 2008-E106 -- 2008 ET7, 2008 EO7, 2008 EB9, 2008 DH23, 2008 CE6, 2007 QE3, 2006 FV35, 2101
291Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2008-E106 -- 2008 EV5, 2008 ER7, 2008 EO7, 2008 EM7, 2008 EG32, 2008 EA8

Impact Risk Monitoring  on 13 March '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 EC69NEODyS14292009-2089752.61e-09-4.11-4.790NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/03/11.497 to 2008/03/12.507."
2008 EV68JPL Sentry14282011-21061471.3e-07-5.89-6.800JPL: "Analysis based on 14 observations spanning 1.0129 days (2008-Mar-11.28909 to 2008-Mar-12.302035)." Diameter approximately 0.068 km. from mean, weighted H=23.5.
NEODyS14282016-2090613.99e-08-6.40-7.280NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2008/03/11.290 to 2008/03/12.303."
2008 EM68NEODyS14292011-20904425.04e-06-6.00-6.470NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2008/03/08.252 to 2008/03/08.363."
2008 EL68NEODyS14292019-2084921.05e-05-6.69-7.220NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2008/03/06.408 to 2008/03/06.480."
2008 EK68NEODyS14282030-20901339.24e-06-8.08-8.980NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2008/03/05.441 to 2008/03/05.481."
2008 EA8JPL Sentry1428R E M O V E DJPL: Risk listing removed at 1050 UTC.
NEODyS1428R E M O V E D
2008 ER7NEODyS14292068-2090261.43e-05-2.34-2.750NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/12.450."
JPL Sentry14282042-21081301.9e-05-2.23-2.760JPL: "Analysis based on 39 observations spanning 6.1135 days (2008-Mar-06.33608 to 2008-Mar-12.44962)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
2008 EM7JPL Sentry14282031-205521.8e-08-5.45-5.450JPL: "Analysis based on 43 observations spanning 5.9970 days (2008-Mar-06.25767 to 2008-Mar-12.25471)." Diameter approximately 0.180 km. from mean, weighted H=21.4.
NEODyS1428R E M O V E D
2008 EV5JPL Sentry1428R E M O V E DJPL: Risk listing removed at 1206 UTC.
2008 DA4JPL Sentry1428210014.8e-07-6.11-6.110JPL: "Analysis based on 64 observations spanning 12.949 days (2008-Feb-27.28072 to 2008-Mar-11.22986)." Diameter approximately 0.054 km. from mean, weighted H=24.0.

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 13 March '08

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

1429Noted that NEODyS has updated its 2008 ER7 risk assessment - see above
1428Noted that JPL Sentry has updated its 2008 DA4 risk assessment - see above
Noted that JPL Sentry has removed 2008 EA8 as an impact risk - see above
Noted that NEODyS has removed 2008 EA8 as an impact risk - see above
Noted that NEODyS has posted 2008 EC69 as an impact risk - see above
Noted that NEODyS has posted 2008 EK68 as an impact risk - see above
Noted that NEODyS has posted 2008 EL68 as an impact risk - see above
Noted that NEODyS has posted 2008 EM68 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 EM7 risk assessment - see above
Noted that NEODyS has removed 2008 EM7 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above
Noted that JPL Sentry has removed 2008 EV5 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 EV68 risk assessment - see above
Noted that NEODyS has posted 2008 EV68 as an impact risk - see above
Grabbed MPEC 2008-E106 - Daily Orbit Update - see above