Contents  on 17 August '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 17 August '10

The MPC's NEO Confirmation Page has 4 listings: 3 new, 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and one updated listings. Of these, two 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 17 August '10

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-Q08 - "20:26 UT" - P/2003 S2 (NEAT) = P/2010 P5

<< DOU on 17 Aug. '10 >>  MPEC 2010-Q07 - "06:12 UT" - Daily Orbit Update

Observers  on 17 August '10

Nine observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPEC 2010-Q07 -- 2010 PS65, 2010 MR87, 2010 KY39, 2010 JE
A81Balzaretto Obs. in Italy, 1 in MPEC 2010-Q07 -- 2010 PY22
B88Bigmuskie Obs. in Italy, 1 in MPEC 2010-Q07 -- 2010 ON101
160Castelmartini Obs. in Italy, 6 in MPEC 2010-Q07 -- 2010 PY22, 2010 MF1, 2010 FO92, 2010 CB55, 2002 NE71, 143381
J75La Sagra Obs. in Spain, 1 in MPEC 2010-Q07 -- 138404
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2010-Q07 -- 2010 NG1, 2010 MR87
474Mt. John Obs. in New Zealand, 1 in MPEC 2010-Q07 -- 2000 PQ27
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-Q08 -- P/2010 P5
B38Santa Mama Obs. in Italy, 1 in MPEC 2010-Q07 -- 2009 CQ5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 August '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 PR66NEODyS14382015-208986.43e-08-4.13-4.360NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2010/08/15.266 to 2010/08/16.841."
2010 PS65JPL Sentry1438210211.5e-05-4.93-4.930JPL: "Analysis based on 23 observations spanning 2.9758 days (2010-Aug-13.29423 to 2010-Aug-16.27007)." Diameter approximately 0.042 km. from mean, weighted H=24.5.

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 August '10

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

2104Grabbed MPEC 2010-Q08 - P/2003 S2 (NEAT) = P/2010 P5 - see above
1438Noted that NEODyS has posted 2010 PR66 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 PS65 risk assessment - see above
Grabbed MPEC 2010-Q07 - Daily Orbit Update - see above