Contents  on 23 August '08


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 23 August '08

The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and five 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 by Birtwhistle et al. at Suno Observatory.

New MPECs  on 23 August '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 23 Aug. '08 >>  MPEC 2008-Q22 - "06:06 UT" - Daily Orbit Update

Observers  on 23 August '08

Seventeen observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 13 in MPEC 2008-Q22 -- 2008 QB, 2008 PJ9, 2008 PG2, 2008 OX2, 2008 OV2, 2008 OP8, 2008 ON, 2008 OM8, 2008 OM, 2008 NU, 2008 NB, 2008 MR1, 2008 MH1
703Catalina Sky Survey in Arizona, 1 in MPEC 2008-Q22 -- 2008 JO20
A30Crespadoro Obs. in Italy, 2 in MPEC 2008-Q22 -- 90403, 188452
J95Great Shefford Obs. in England, 1 in MPEC 2008-Q22 -- 2008 QB
F84Hibiscus Obs. in Tahiti, 1 in MPEC 2008-Q22 -- 2008 PH3
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-Q22 -- 2008 LA
932McCarthy Obs. in Connecticut, 2 in MPEC 2008-Q22 -- 2008 ON, 188452
152Moletai Obs. in Lithuania, 1 in MPEC 2008-Q22 -- 2008 OS9
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-Q22 -- 2008 MR1
J93Mt. Tuffley Obs. in England, 2 in MPEC 2008-Q22 -- 8567, 4179
J50Nordic Near-Earth-Object Network, 1 in MPEC 2008-Q22 -- 2008 JT19
669Ojai Obs., 1 in MPEC 2008-Q22 -- 7889
A56Parma Obs. in Italy, 1 in MPEC 2008-Q22 -- 2008 QB
B49Paus Obs. in Spain, 1 in MPEC 2008-Q22 -- 189700
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-Q22 -- 2004 XN44, 65733
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2008-Q22 -- 2008 NO3
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-Q22 -- 2004 MO7
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 23 August '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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
2008 LANEODyS16132058-207059.76e-05-3.15-3.150NEODyS: "Based on 84 optical observations (of which 1 are rejected as outliers) from 2008/06/01.170 to 2008/08/13.557."
JPL Sentry15022058-206139.8e-05-3.15-3.150JPL: "Analysis based on 83 observations spanning 73.387 days (2008-Jun-01.16922 to 2008-Aug-13.555821)." Diameter approximately 0.080 km. from mean, weighted H=23.1.

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 23 August '08

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

1613Noted that NEODyS has updated its 2008 LA risk assessment - see above
1502Noted that JPL Sentry has updated its 2008 LA risk assessment - see above
Grabbed MPEC 2008-Q22 - Daily Orbit Update - see above