Contents  on 14 March '10


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 14 March '10

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:

Data update noted at 0524 UTC when the database was dated 13 March

NEOCP Activity  on 14 March '10

The MPC's NEO Confirmation Page has 16 listings: 2 new, 14 updated

When last checked today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and fourteen updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of eighteen listings on the NEOCP at some point today.

New MPECs  on 14 March '10

Minor Planet Electronic Circulars

There have been four MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-E69 - "17:08 UT" - 2008 BU2

MPEC 2010-E68 - "16:57 UT" - 2005 GB120

MPEC 2010-E67 - "16:48 UT" - 1999 HW1

<< DOU on 14 Mar. '10 >>  MPEC 2010-E66 - "07:08 UT" - Daily Orbit Update

Observers  on 14 March '10

A total of 20 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 4 in MPEC 2010-E66 -- 2010 DA, 2010 CL18, 2003 UL12, 68216
J51Atlante Obs. in the Canary Islands, 3 in MPEC 2010-E66 -- 2010 CM44, 2000 CO101, 163132
160Castelmartini Obs. in Italy, 3 in MPEC 2010-E66 -- 218863, 162998, 3691
703Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2010-E66 -- 2008 GE1, 2003 UL12, 1999 HE1, 221980, 175706, 7358, 1917
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2010-E66 -- 12923
448Desert Moon Obs. in New Mexico, 4 in MPEC 2010-E66 -- 2005 YY93, 2002 VD118, 2000 EW70, 141525
252Goldstone DSS-13 34m antenna in southern California, 1 in radar -- 2010 DJ1
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 2010 DJ1
683Goodricke-Pigott Obs. in Arizona, 2 in MPEC 2010-E66 -- 68216, 175706
704LINEAR in New Mexico, 14 in MPEC 2010-E66 -- 2006 DU62, 2004 RD84, 2002 NP1, 2002 CF26, 85990, 27346, 232382, 214088, 20790, 162998, 162882, 5626, 3671, 1627
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 1 in MPEC 2010-E66 -- 2009 FY4
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2010-E66 -- 2010 CR5, 2010 CG19
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPEC 2010-E66 -- 2010 CC180, 2004 YR32, 2003 UL12, 2001 RZ11, 20790, 4015
A13Naef Obs. in Switzerland, 1 in MPEC 2010-E66 -- 5693
434San Benedetto Po Obs. in Italy, 1 in MPEC 2010-E66 -- 2000 CO101
510Siegen Obs. in Germany, 1 in MPEC 2010-E66 -- 433
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-E66 -- 96631
291Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2010-E66 -- 2010 EH20, 2010 CH55, 2010 BL2, 2010 AK2, 2009 EF3, 2002 XA40
926Tenagra II Obs. in Arizona, 6 in MPECs 2010-E66, 2010-E67, 2010-E68 & 2010-E69 -- 2010 EG21, 2009 CB3, 2008 BU2, 2005 GB120, 1999 HW1, 136923
C00Velikie Luki Obs. in Russia, 2 in MPEC 2010-E66 -- 2004 TB18, 68359
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 March '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.





Notes for Today's Latest Risk Assessments
2010 EH20NEODyS1615R E M O V E D-
JPL Sentry1615R E M O V E DJPL: Risk listing removed at 1049 UTC.
2010 CR5JPL Sentry16152050-208777.2e-08-4.35-4.580JPL: "Analysis based on 38 observations spanning 10.998 days (2010-Feb-09.3273 to 2010-Feb-20.325661)." Diameter approximately 0.372 km. from mean, weighted H=19.8.
NEODyS16152030-208785.95e-08-4.35-4.520NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2010/02/09.328 to 2010/02/20.326."

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 14 March '10

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

1810Grabbed MPEC 2010-E67 - 1999 HW1 - see above
Grabbed MPEC 2010-E68 - 2005 GB120 - see above
Grabbed MPEC 2010-E69 - 2008 BU2 - see above
1615Noted that JPL Sentry has updated its 2010 CR5 risk assessment - see above
Noted that NEODyS has updated its 2010 CR5 risk assessment - see above
Noted that JPL Sentry has removed 2010 EH20 as an impact risk - see above
Noted that NEODyS has removed 2010 EH20 as an impact risk - see above
Grabbed MPEC 2010-E66 - Daily Orbit Update - see above
0524Noted Radar Astrometry database update - see above