Contents  on 13 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.

NEOCP Activity  on 13 March '10

The MPC's NEO Confirmation Page has 13 listings: 2 new, 11 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and eleven updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of seventeen listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 13 March '10

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been five MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-E65 - "21:00 UT" - 2009 HH36

MPEC 2010-E64 - "17:40 UT" - Comet P/2010 E2 (Jarnac)

MPEC 2010-E63 - "17:34 UT" - Comet C/2010 D4 (WISE)

<< DOU on 13 Mar. '10 >>  MPEC 2010-E62 - "07:08 UT" - Daily Orbit Update

MPEC 2010-E61 - "03:52 UT" - 2010 EH20

Observers  on 13 March '10

A total of 26 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 13 in MPECs 2010-E62 & 2010-E63 -- 2010 EX11, 2010 ES12, 2010 DM56, 2010 DB34, 2010 DA, C/2010 D4, 2010 CM44, 2010 CD19, 2010 AK, 2009 SX1, 2009 FY4, 2008 EE, 2001 PT9
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2010-E62 -- 2010 CM44
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2010-E62 -- 2004 RV10
235CAST Obs. in Italy, 2 in MPEC 2010-E62 -- 2010 CM44, 2009 UD2
703Catalina Sky Survey (CSS) in Arizona, 13 in MPEC 2010-E62 -- 2010 CM44, 2010 CC180, 2009 UD2, 2002 NP1, 1999 RC32, 40263, 39796, 214088, 20790, 16064, 136618, 8567, 7358
448Desert Moon Obs. in New Mexico, 4 in MPEC 2010-E62 -- 2010 DP, 2010 CR1, 2010 CM44, 162882
J27El Guijo Obs. in Spain, 2 in MPEC 2010-E62 -- 2009 UD2, 2000 CO101
J19El Maestrat Obs. in Spain, 2 in MPEC 2010-E62 -- 68216, 24761
651Grasslands Obs. in Arizona, 1 in MPEC 2010-E64 -- P/2010 E2
J95Great Shefford Obs. in England, 1 in MPEC 2010-E63 -- C/2010 D4
G92Jarnac Obs. in Arizona, 1 in MPEC 2010-E64 -- P/2010 E2
D95Kurihara Obs. in Japan, 1 in MPEC 2010-E62 -- 433
B33Libbiano Obs. in Italy, 2 in MPECs 2010-E63 & 2010-E64 -- P/2010 E2, C/2010 D4
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2010-E63 & 2010-E64 -- P/2010 E2, C/2010 D4
568Mauna Kea in Hawaii, 1 in MPEC 2010-E63 -- C/2010 D4
474Mt. John Obs. in New Zealand, 2 in MPEC 2010-E62 -- 2010 EK12, 2010 DB34
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-E62, 2010-E64 & 2010-E65 -- P/2010 E2, 2009 XJ8, 2009 HH36, 2006 AO4, 2004 RK, 2000 SV20
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-E64 -- P/2010 E2
204Schiaparelli Obs. in Italy, 5 in MPEC 2010-E62 -- 2010 CD19, 2010 CC180, 2004 TR13, 2004 RA11, 2000 RE52
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-E62 -- 2010 CC180
691Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2010-E62 -- 2010 CD19, 2009 WF, 2009 BA11, 2006 QW89, 41429, 186822
291Spacewatch 1.8m telescope in Arizona, 9 in MPEC 2010-E62 -- 2010 DN, 2010 DM21, 2010 DA, 2010 CM, 2010 CH55, 2010 AK2, 2009 EF3, 2006 QR89, 2005 YU55
673Table Mtn. Obs. in southern California, 1 in MPEC 2010-E63 -- C/2010 D4
926Tenagra II Obs. in Arizona, 5 in MPECs 2010-E62, 2010-E63, 2010-E64 & 2010-E65 -- 2010 ES12, P/2010 E2, 2010 DB34, C/2010 D4, 2009 HH36
H10Tzec Maun Obs. Mayhill in New Mexico, 2 in MPECs 2010-E62 & 2010-E64 -- 2010 EX11, P/2010 E2
C51WISE in Earth polar orbit, 5 in MPECs 2010-E61, 2010-E62 & 2010-E63 -- 2010 EH20, C/2010 D4, 2008 EV5, 2008 CN1, 194268
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 March '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 EH20JPL Sentry16422021-210741.4e-09-5.02-5.450JPL: "Analysis based on 20 observations spanning 4.9621 days (2010-Mar-06.90577 to 2010-Mar-11.86787)." Diameter approximately 1.000 km. from mean, weighted H=17.6.
NEODyS16422023-206831.42e-10-5.70-5.800NEODyS: "Based on 23 optical observations (of which 3 are rejected as outliers) from 2010/03/06.510 to 2010/03/11.869."
2010 DM56JPL Sentry16422071-2086124.0e-06-2.93-3.430JPL: "Analysis based on 40 observations spanning 17.795 days (2010-Feb-19.26983 to 2010-Mar-09.0644)." Diameter approximately 0.370 km. from mean, weighted H=19.8.
NEODyS16422068-2086134.07e-06-2.92-3.420NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2010/02/19.271 to 2010/03/09.065."

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 '10

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

2208Grabbed MPEC 2010-E65 - 2009 HH36 - see above
1908Grabbed MPEC 2010-E64 - Comet P/2010 E2 (Jarnac) - see above
1739Grabbed MPEC 2010-E63 - Comet C/2010 D4 (WISE) - see above
1642Noted that JPL Sentry has updated its 2010 DM56 risk assessment - see above
Noted that NEODyS has updated its 2010 DM56 risk assessment - see above
Noted that JPL Sentry has posted 2010 EH20 as an impact risk - see above
Noted that NEODyS has posted 2010 EH20 as an impact risk - see above
Grabbed MPEC 2010-E62 - Daily Orbit Update - see above
0539Grabbed MPEC 2010-E61 - 2010 EH20 - see above