Contents  on 25 February '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 25 February '10

The MPC's NEO Confirmation Page has 4 listings: 4 updated

When last checked at 2018 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four updated listings. So far The Tracking News has counted a total of seven 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 25 February '10

Minor Planet Electronic Circulars

As of last check at 2018 UTC, there have been five MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-D82 - "17:45 UT" - 2009 XC2

MPEC 2010-D81 - "17:30 UT" - 2010 DJ56

MPEC 2010-D80 - "17:27 UT" - 2010 DH56

MPEC 2010-D79 - "17:23 UT" - 2010 DG56

<< DOU on 25 Feb. '10 >>  MPEC 2010-D78 - "07:25 UT" - Daily Orbit Update

Observers  on 25 February '10

Seventeen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 5 in MPEC 2010-D78 -- 2010 DX1, 2010 DA, 2010 CF19, 2010 CD55, 2010 CD19
B75Betelgeuse Station in Italy, 5 in MPEC 2010-D78 -- 89355, 22753, 162900, 4179, 3122
448Desert Moon Obs. in New Mexico, 8 in MPEC 2010-D78 -- 2010 DX1, 2010 DW1, 2010 CM44, 2010 CL18, 2010 CL1, 2010 BC3, 2009 XR2, 105141
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2010-D78 -- 2009 UD2, 2008 EE, 2001 PT9, 2000 CO101
704LINEAR in New Mexico, 2 in MPEC 2010-D78 -- 2003 UL12, 230111
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 1 in MPEC 2010-D78 -- 2010 DX1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-D79 -- 2010 DG56
261&Rob Matson in southern California using the Palomar Digitized Sky Survey in southern California, 1 in MPEC 2010-D82 -- 2009 XC2
A53Peschiera del Garda Obs. in Italy, 3 in MPEC 2010-D78 -- 2008 EE, 2001 PT9, 162882
H36Sandlot Obs. in Kansas, 3 in MPECs 2010-D78 & 2010-D81 -- 2010 DX1, 2010 DJ56, 2010 CG19
204Schiaparelli Obs. in Italy, 8 in MPEC 2010-D78 -- 2010 DZ1, 2010 DX1, 2010 DO, 2010 DJ1, 2010 DA, 2010 CF19, 2010 CD55, 2000 CO101
D21Shenton Park Obs. in Western Australia, 6 in MPEC 2010-D78 -- 2010 DB34, 2010 CR1, 2010 CM44, 2010 AE, 2009 CQ5, 2004 RA11
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-D78 -- 2010 CN1
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-D78 -- 2008 EB9
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2010-D78, 2010-D79, 2010-D80 & 2010-D81 -- 2010 DP, 2010 DJ56, 2010 DH56, 2010 DG56, 2010 DF1, 2010 CO44, 2010 CH55
926Tenagra II Obs. in Arizona, 5 in MPEC 2010-D78 -- 2010 DZ1, 2010 DX1, 2010 CH18, 2010 CD55, 2010 CD19
C51WISE in Earth polar orbit, 10 in MPECs 2010-D78, 2010-D79, 2010-D80 & 2010-D81 -- 2010 DJ56, 2010 DH56, 2010 DG56, 85628, 163691, 159686, 10115, 7822, 5604, 4015
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 February '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2018 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.





Notes for Today's Latest Risk Assessments
2010 CH55JPL Sentry1422R E M O V E DJPL: Risk listing removed at 1049 UTC.
2010 CL19NEODyS14222016-2083361.15e-06-2.10-2.440NEODyS: "Based on 33 optical observations (of which 1 are rejected as outliers) from 2010/02/13.096 to 2010/02/17.108."

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 25 February '10

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

1753Grabbed MPEC 2010-D79 - 2010 DG56 - see above
Grabbed MPEC 2010-D80 - 2010 DH56 - see above
Grabbed MPEC 2010-D81 - 2010 DJ56 - see above
Grabbed MPEC 2010-D82 - 2009 XC2 - see above
1422Noted that JPL Sentry has removed 2010 CH55 as an impact risk - see above
Noted that NEODyS has posted 2010 CL19 as an impact risk - see above
Grabbed MPEC 2010-D78 - Daily Orbit Update - see above