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Contents  on 27 February '10

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.

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NEOCP Activity  on 27 February '10

The MPC's NEO Confirmation Page has 5 listings: 1 new, 4 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and four updated listings.

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

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New MPECs  on 27 February '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-D91 - "15:52 UT" - Observations of Comets


MPEC 2010-D90 - "15:34 UT" - Comet C/2010 B1 (Cardinal)


MPEC 2010-D89 - "15:28 UT" - Comet P/2010 A5 (LINEAR)


MPEC 2010-D88 - "15:18 UT" - Comet P/2010 A2 (LINEAR)


<< DOU on 27 Feb. '10 >>  MPEC 2010-D87 - "07:12 UT" - Daily Orbit Update


MPEC 2010-D86 - "05:51 UT" - 2005 VC2

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Observers  on 27 February '10

A total of 35 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 1 in MPEC 2010-D91 -- C/2007 D1
I32Beta Orionis Obs. in Argentina, 2 in MPEC 2010-D91 -- 169P, 29P
B96Brixiis Obs. in Belgium, 1 in MPEC 2010-D91 -- 30P
J02Busot Obs. in Spain, 2 in MPEC 2010-D91 -- C/2008 N1, C/2005 L3
B09Capannoli Obs. in Italy, 3 in MPEC 2010-D87 -- 2000 CO101, 85839, 11066
A77Chante-Perdrix Obs. in France, 3 in MPEC 2010-D91 -- C/2009 O2, C/2009 K5, C/2007 Q3
850Cordell-Lorenz Obs. in Tennessee, 5 in MPECs 2010-D88 & 2010-D91 -- P/2010 A2, P/2009 Q4, C/2007 Q3, 118P, 81P
F65Faulkes Telescope North in Hawaii, 1 in MPEC 2010-D91 -- 17P
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2010-D91 -- 17P
J95Great Shefford Obs. in England, 2 in MPEC 2010-D87 -- 2010 DA, 2003 HB
E16Grove Creek Obs. in New South Wales, 2 in MPECs 2010-D87 & 2010-D91 -- C/2009 F4, 2001 PT9
442Gualba Obs. in Spain, 3 in MPEC 2010-D91 -- 157P, 94P, 29P
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2010-D91 -- 29P
857Iowa Robotic Obs. in Arizona, 2 in MPEC 2010-D91 -- 94P, 30P
704LINEAR in New Mexico, 2 in MPECs 2010-D89 & 2010-D91 -- P/2010 A5, 118P
950La Palma in the Canary Islands, 1 in MPEC 2010-D91 -- 17P
809La Silla in Chile, 1 in MPEC 2010-D88 -- P/2010 A2
J59Linceo Obs. in Spain, 3 in MPEC 2010-D91 -- 169P, 118P, 29P
C10Maisoncelles Obs. in France, 3 in MPEC 2010-D91 -- C/2009 O2, C/2007 Q3, 81P
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-D86 -- 2005 VC2
213Montcabre Obs. in Spain, 10 in MPECs 2010-D87, 2010-D90 & 2010-D91 -- C/2010 B1, P/2010 A3, 2009 UD2, C/2007 Q3, 2001 PT9, 169P, 157P, 81P, 30P, 29P
900Moriyama Obs. in Japan, 6 in MPECs 2010-D90 & 2010-D91 -- C/2010 B1, C/2008 Q3, C/2007 D1, C/2005 L3, 94P, 74P
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2010-D91 -- 17P
D81Nagano Obs. in Japan, 2 in MPEC 2010-D91 -- C/2009 O2, 81P
J47Nazaret Obs. in Spain, 5 in MPEC 2010-D91 -- P/2010 A3, P/2009 Q4, 157P, 118P, 29P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2010-D91 -- C/2008 Q3, C/2008 N1, C/2007 Q3, C/2005 L3, 81P, 30P
473Remanzacco Obs. in Italy, 1 in MPEC 2010-D91 -- 118P
233San Vito Obs. in Italy, 1 in MPEC 2010-D90 -- C/2010 B1
204Schiaparelli Obs. in Italy, 5 in MPECs 2010-D89 & 2010-D91 -- P/2010 A5, C/2008 N1, 169P, 81P, 74P
C14Sky Vistas Obs. in Austria, 4 in MPEC 2010-D91 -- C/2007 Q3, 118P, 94P, 29P
I19Tanti Obs. in Argentina, 2 in MPEC 2010-D87 -- 2010 CL18, 2007 EP88
H10Tzec Maun Obs. Mayhill in New Mexico, 3 in MPEC 2010-D91 -- C/2007 Q3, 169P, 29P
D96Tzec Maun Obs. Moorook in South Australia, 5 in MPECs 2010-D89 & 2010-D91 -- P/2010 A5, C/2009 K5, C/2009 F4, 81P, 29P
H47Vicksburg Obs. in Mississippi, 7 in MPEC 2010-D91 -- C/2007 Q3, C/2005 L3, 169P, 118P, 81P, 30P, 29P
C51WISE in Earth polar orbit, 5 in MPEC 2010-D87 -- 2010 AB78, 2008 EV5, 1996 GQ, 218017, 162998
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

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Impact Risk Monitoring  on 27 February '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. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few 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.
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
2010 DM56NEODyS16342047-2089238.45e-07-3.61-4.350NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2010/02/19.271 to 2010/02/26.864."
JPL Sentry00022047-2109309.7e-07-3.56-4.320JPL: "Analysis based on 36 observations spanning 7.5932 days (2010-Feb-19.26983 to 2010-Feb-26.86307)." Diameter approximately 0.340 km. from mean, weighted H=20.0.

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.

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Chronology  on 27 February '10

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

1634Noted that NEODyS has posted 2010 DM56 as an impact risk - see above
Grabbed MPEC 2010-D87 - Daily Orbit Update - see above
Grabbed MPEC 2010-D88 - Comet P/2010 A2 (LINEAR) - see above
Grabbed MPEC 2010-D89 - Comet P/2010 A5 (LINEAR) - see above
Grabbed MPEC 2010-D90 - Comet C/2010 B1 (Cardinal) - see above
Grabbed MPEC 2010-D91 - Observations of Comets - see above
0700Grabbed MPEC 2010-D86 - 2005 VC2 - see above
0002Noted that JPL Sentry has posted 2010 DM56 as an impact risk - see above