Contents  on 28 June '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 28 June '10

The MPC's NEO Confirmation Page has 6 listings: 4 new, 2 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new and two updated listings. So far The Tracking News has counted a total of eight 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 28 June '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 28 June '10 >>  MPEC 2010-M66 - "06:06 UT" - Daily Orbit Update

Observers  on 28 June '10

Seven observing facilities appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 12 in MPEC 2010-M66 -- 2010 MY1, 2010 MQ, 2010 MP1, 2010 MH1, 2010 MF1, 2010 LM68, 2010 LE68, 2010 EH20, 2010 CL18, 2006 SZ217, 2006 KL21, 2004 JX20
B75Betelgeuse Station in Italy, 1 in MPEC 2010-M66 -- 2009 SM103
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-M66 -- 2010 MP1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-M66 -- 2010 FX80
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2010-M66 -- 2007 XB10, 54789
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2010-M66 -- 2010 LT108, 2010 JG87
926Tenagra II Obs. in Arizona, 2 in MPEC 2010-M66 -- 2010 MQ, 2010 LL34
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 June '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 LD64JPL Sentry23592043-209891.0e-07-7.28-7.370JPL: "Analysis based on 18 observations spanning 1.0585 days (2010-Jun-14.28757 to 2010-Jun-15.34605)." Diameter approximately 0.028 km. from mean, weighted H=25.4.
2010 JH110JPL Sentry23592071-209236.8e-05-5.11-5.260JPL: "Analysis based on 60 observations spanning 34.114 days (2010-May-15.30867 to 2010-Jun-18.42252)." Diameter approximately 0.019 km. from mean, weighted H=26.3.

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 28 June '10

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

2359Noted that JPL Sentry has updated its 2010 JH110 risk assessment - see above
Noted that JPL Sentry has updated its 2010 LD64 risk assessment - see above
1505Grabbed MPEC 2010-M66 - Daily Orbit Update - see above