Some images from the year 2010.

See 2010 in images, a simple collection from the closing year of pictorial news for small Solar-System bodies. A few examples, clockwise from upper left: A dustup on 596 Scheila, a flyby of 21 Lutetia, the passing of an original, Brian Marsden, the disruption of P/2010 A2 (LINEAR), finding bits of 2008 TC3, and bringing DSS-14 back into service. Credits and copyrights for one or more: Great Shefford, ESA, H-S CfA, NASA, SETI, and JPL (see the respective links for details).

Contents  on 31 December '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 31 December '10

The MPC's NEO Confirmation Page has 7 listings: 6 new, 1 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had six new and one updated listings. Of these, five were "one nighters."

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 31 December '10

Minor Planet Electronic Circulars

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

<< DOU on 31 Dec. '10 >>  MPEC 2010-Y39 - "07:10 UT" - Daily Orbit Update

Observers  on 31 December '10

Five observers appear in today's MPEC.

CodeObserver / observatory
204Schiaparelli Obs. in Italy, 8 in MPEC 2010-Y39 -- 2010 YO, 2010 YD, 2010 XC25, 2010 RR179, 2010 OC101, 2005 CF41, 2000 CR101, 1997 XS2
D96Tzec Maun Obs. Moorook in South Australia, 2 in MPEC 2010-Y39 -- 2006 VB14, 96744
A48Verona Obs. in Italy, 2 in MPEC 2010-Y39 -- 2010 YS, 2010 JL33
C51WISE in Earth polar orbit, 11 in MPEC 2010-Y39 -- 2010 BL2, 2009 WO106, 2008 XM, 2000 CO101, 1999 LS7, 1998 YW5, 230549, 230420, 20790, 163023, 3200
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2010-Y39 -- 2000 AC6, 198856
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 31 December '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 XC25NEODyS16462048-206362.43e-05-2.43-2.480NEODyS: "Based on 56 optical observations (of which 1 are rejected as outliers) from 2010-12-08.378 to 2010-12-29.195."

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 31 December '10

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

1646Noted that NEODyS has updated its 2010 XC25 risk assessment - see above
Grabbed MPEC 2010-Y39 - Daily Orbit Update - see above