Contents  on 17 July '10

Note: A/CC news pages will update infrequently for much of the remainder of July.


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 17 July '10

The MPC's NEO Confirmation Page has 13 listings: 8 new, 5 updated

When last checked at 1455 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eight new and five updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of fourteen 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 17 July '10

Minor Planet Electronic Circulars

As of last check at 1455 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 17 July '10 >>  MPEC 2010-O05 - "06:11 UT" - Daily Orbit Update

Observers  on 17 July '10

Twelve observing facilities appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPEC 2010-O05 -- 2010 NH, 2010 LU108
160Castelmartini Obs. in Italy, 5 in MPEC 2010-O05 -- 2006 KL21, 242211, 19764, 153842, 143381
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2010-O05 -- 7336
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-O05 -- 2009 KD5
157Frasso Sabino Obs. in Italy, 2 in MPEC 2010-O05 -- 2008 OS9, 2007 ML13
196Homburg-Erbach Obs. in Germany, 2 in MPEC 2010-O05 -- 2010 CJ171, 85989
J75La Sagra Obs. in Spain, 1 in MPEC 2010-O05 -- 9202
204Schiaparelli Obs. in Italy, 1 in MPEC 2010-O05 -- 2010 LE15
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-O05 -- 2010 LY63
587Sormano Obs. in Italy, 5 in MPEC 2010-O05 -- 2010 NK1, 2010 MF1, 2010 EC135, 2010 CJ171, 2010 AE
C51WISE in Earth polar orbit, 2 in MPEC 2010-O05 -- 2002 CE26, 29075
198Wildberg Obs. in Germany, 2 in MPEC 2010-O05 -- 2010 LE15, 2010 AE
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 July '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 1455 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 NHJPL Sentry12162089-210731.5e-06-6.39-6.460JPL: "Analysis based on 58 observations spanning 11.908 days (2010-Jul-04.42235 to 2010-Jul-16.330273)." Diameter approximately 0.025 km. from mean, weighted H=25.7.
NEODyS1216R E M O V E D-

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 17 July '10

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

1216Noted that JPL Sentry has updated its 2010 NH risk assessment - see above
Noted that NEODyS has removed 2010 NH as an impact risk - see above
Grabbed MPEC 2010-O05 - Daily Orbit Update - see above