Contents  on 22 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 22 July '10

The MPC's NEO Confirmation Page has 19 listings: 11 new, 8 updated

When last checked at 1229 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eleven new and eight updated listings. Of these, seven were "one nighters."

New MPECs  on 22 July '10

Minor Planet Electronic Circulars

There were two MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-O19 - "23:09 UT" - 2010 OA1

<< DOU on 22 July '10 >>  MPEC 2010-O18 - "06:12 UT" - Daily Orbit Update

Observers  on 22 July '10

Nine observing facilities appeared in this day's MPECs.

CodeObserver / observatory
I08Alianza S4 Obs. in Argentina, 1 in MPEC 2010-O18 -- 2010 OC
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2010-O18 -- 2002 OS4
240Herrenberg Obs. in Germany, 1 in MPEC 2010-O18 -- 4257
704LINEAR in New Mexico, 1 in MPEC 2010-O19 -- 2010 OA1
J75La Sagra Obs. in Spain, 2 in MPEC 2010-O18 -- 2007 ML13, 153842
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-O18 -- 2010 NW1
204Schiaparelli Obs. in Italy, 10 in MPEC 2010-O18 -- 2010 EH20, 2010 CJ171, 2009 KD5, 2008 OS9, 2007 ML13, 230979, 19764, 161998, 159609, 7977
D21Shenton Park Obs. in Western Australia, 4 in MPECs 2010-O18 & 2010-O19 -- 2010 OC, 2010 OA1, 2010 NR1, 2010 KZ117
C51WISE in Earth polar orbit, 6 in MPEC 2010-O18 -- 2010 EX119, 162903, 152754, 138359, 136874, 2102
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 July '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 1229 and JPL at 1230 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 OCJPL Sentry1230R E M O V E DJPL: Risk listing removed at 0948 UTC.

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 22 July '10

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

0056 7/23Grabbed MPEC 2010-O19 - 2010 OA1 - see above
1230Noted that JPL Sentry has removed 2010 OC as an impact risk - see above
1229Grabbed MPEC 2010-O18 - Daily Orbit Update - see above