Contents  on 12 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 12 March '08

The MPC's NEO Confirmation Page has 15 listings: 12 new, 3 updated

When last checked at 2328 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had twelve new and three updated listings. All of these were "one nighters." The Tracking News counted a total of 40 objects listed on the NEOCP at some point on this day.

New MPECs  on 12 March '08

Minor Planet Electronic Circulars

There were eight MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-E105 - "19:13 UT" - 2008 ED69


MPEC 2008-E104 - "19:08 UT" - 2008 EC69


MPEC 2008-E103 - "18:54 UT" - 2008 EY68


MPEC 2008-E102 - "18:11 UT" - 2008 EV68


MPEC 2008-E101 - "18:03 UT" - 2008 EU68


MPEC 2008-E100 - "17:22 UT" - 2004 XN44


<< DOU on 12 Mar. '08 >>  MPEC 2008-E99 - "06:09 UT" - Daily Orbit Update


MPEC 2008-E98 - "03:08 UT" - 2008 CR118

Observers  on 12 March '08

A total of 21 observing facilities appeared in this day's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2008-E100 -- 2004 XN44
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2008-E99 -- 1864
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2008-E99, 2008-E104 & 2008-E105 -- 2008 ED69, 2008 EC69, 2008 EA32, 2008 CP116, 2008 CL72, 2007 TU24, 2004 CR2, 40267, 16657, 11398
0952Vasiliy Rumyantsev via Crimean Astrophysical Obs. in the Ukraine, 1 in MPEC 2008-E99 -- 2008 ED8
448Desert Moon Obs. in New Mexico, 6 in MPEC 2008-E99 -- 2008 ET7, 2008 EP7, 2008 EO6, 2008 EN7, 2008 EL6, 2008 CB22
H51Greiner Research Obs. (GRO) in Wisconsin, 10 in MPEC 2008-E99 -- 2008 EL, 2008 CL1, 2007 RV9, 2006 DU62, 2003 AK18, 4954, 3554, 3288, 1620, 1036
701Junk Bond Obs. in Arizona, 1 in MPEC 2008-E99 -- 2008 EB32
704LINEAR in New Mexico, 14 in MPECs 2008-E99, 2008-E100 & 2008-E103 -- 2008 EY68, 2008 EJ, 2008 EF9, 2008 CS116, 2008 CP116, 2008 BT18, 2008 BC22, 2005 EY169, 2004 XN44, 2004 CR2, 13553, 9162, 6037, 5646
304Las Campanas Obs. in Chile, 1 in MPEC 2008-E99 -- 1994 AW1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-E99 -- 2005 TU45
474Mt. John Obs. in New Zealand, 5 in MPECs 2008-E99, 2008-E100 & 2008-E103 -- 2008 EZ5, 2008 EY68, 2008 EG32, 2008 CC119, 2004 XN44
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2008-E99, 2008-E100, 2008-E101, 2008-E102, 2008-E104 & 2008-E105 -- 2008 EV68, 2008 EU68, 2008 ED69, 2008 EC69, 2006 EV52, 2004 XN44, 137078, 5604
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2008-E98 -- 2008 CR118
649Powell Obs. in Kansas, 2 in MPEC 2008-E99 -- 2008 EL6, 2008 ED8
E12Siding Spring Survey (SSS) in New South Wales, 8 in MPEC 2008-E99 -- 2008 EY5, 2008 EP6, 2008 EM9, 2008 EG, 2008 EE9, 2008 CC119, 39572, 3691
691Spacewatch 0.9m telescope in Arizona, 8 in MPEC 2008-E99 -- 2006 BA148, 2004 FE31, 175189, 141495, 136874, 136618, 10145, 3552
291Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2008-E99, 2008-E101 & 2008-E102 -- 2008 EX5, 2008 EV68, 2008 EU68, 2008 ER7, 2008 EO7, 2008 EM7, 2008 EB9, 2008 EA9, 2008 DW22, 2008 DW, 2008 DA4, 2008 CJ70, 2008 CB22, 2004 MP3
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-E104 -- 2008 EC69
G69Thousand Oaks Obs. in southern California, 1 in MPEC 2008-E99 -- 2002 TD66
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-E99 -- 2008 EZ5
A48Verona Obs. in Italy, 3 in MPEC 2008-E99 -- 2008 EL, 2008 CN1, 2005 BE2

Impact Risk Monitoring  on 12 March '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2328 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 EC69JPL Sentry2157202211.1e-10-5.52-5.520JPL: "Analysis based on 20 observations spanning 1.0104 days (2008-Mar-11.49608 to 2008-Mar-12.50653)." Diameter approximately 1.300 km. from mean, weighted H=17.1.
2008 EV68JPL Sentry20582012-21041971.3e-07-5.97-7.170JPL: "Analysis based on 11 observations spanning .99115 days (2008-Mar-11.28909 to 2008-Mar-12.28024)." Diameter approximately 0.071 km. from mean, weighted H=23.4.
2008 EM68JPL Sentry05222010-210711471.7e-05-5.23-5.610JPL: "Analysis based on 12 observations spanning .11019 days (2008-Mar-08.25164 to 2008-Mar-08.36183)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2008 EJ68NEODyS18592067-207523.72e-10-11.30-11.470NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2008/03/05.340 to 2008/03/05.434."
2008 EG32JPL Sentry1429R E M O V E DJPL: Risk listing removed at 1223 UTC.
2008 EA9NEODyS14302041-2087262.02e-05-6.39-6.860NEODyS: "Based on 25 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/03/11.345."
JPL Sentry14292063-210592.1e-05-6.38-6.860JPL: "Analysis based on 24 observations spanning 4.9388 days (2008-Mar-06.40551 to 2008-Mar-11.34433)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2008 ER7NEODyS17252020-2090518.82e-06-2.72-3.030NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/11.305."
JPL Sentry14292014-21072263.6e-05-2.22-2.790JPL: "Analysis based on 24 observations spanning 4.9685 days (2008-Mar-06.33608 to 2008-Mar-11.30455)." Diameter approximately 0.289 km. from mean, weighted H=20.4.
2008 EM7NEODyS14302031-2086121.46e-07-4.54-4.570NEODyS: "Based on 41 optical observations (of which 1 are rejected as outliers) from 2008/03/06.258 to 2008/03/11.201."
JPL Sentry14292031-209671.5e-07-4.57-4.610JPL: "Analysis based on 40 observations spanning 4.9426 days (2008-Mar-06.25767 to 2008-Mar-11.20027)." Diameter approximately 0.190 km. from mean, weighted H=21.3.
2008 EX5NEODyS18592044-20901242.52e-05-4.18-4.950NEODyS: "Based on 35 optical observations (of which 1 are rejected as outliers) from 2008/03/04.396 to 2008/03/11.489."
JPL Sentry14292049-2101803.4e-05-4.08-4.950JPL: "Analysis based on 34 observations spanning 7.0927 days (2008-Mar-04.39523 to 2008-Mar-11.48795)." Diameter approximately 0.061 km. from mean, weighted H=23.7.
2008 DA4JPL Sentry1429210014.9e-07-6.11-6.110JPL: "Analysis based on 61 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 12 March '08

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

2157Noted that JPL Sentry has posted 2008 EC69 as an impact risk - see above
2058Noted that JPL Sentry has posted 2008 EV68 as an impact risk - see above
2003Grabbed MPEC 2008-E103 - 2008 EY68 - see above
Grabbed MPEC 2008-E104 - 2008 EC69 - see above
Grabbed MPEC 2008-E105 - 2008 ED69 - see above
1859Noted that NEODyS has posted 2008 EJ68 as an impact risk - see above
Noted that NEODyS has updated its 2008 EX5 risk assessment - see above
1818Grabbed MPEC 2008-E101 - 2008 EU68 - see above
Grabbed MPEC 2008-E102 - 2008 EV68 - see above
1725Noted that NEODyS has updated its 2008 ER7 risk assessment - see above
Grabbed MPEC 2008-E100 - 2004 XN44 - see above
1430Noted that NEODyS has updated its 2008 EA9 risk assessment - see above
Noted that NEODyS has updated its 2008 EM7 risk assessment - see above
Grabbed MPEC 2008-E99 - Daily Orbit Update - see above
1429Noted that JPL Sentry has updated its 2008 DA4 risk assessment - see above
Noted that JPL Sentry has updated its 2008 EA9 risk assessment - see above
Noted that JPL Sentry has removed 2008 EG32 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 EM7 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above
Noted that JPL Sentry has updated its 2008 EX5 risk assessment - see above
0522Noted that JPL Sentry has posted 2008 EM68 as an impact risk - see above
0420Grabbed MPEC 2008-E98 - 2008 CR118 - see above