Contents  on 19 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 19 August '08

The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and one updated listing. Of these, one was a "one nighter." So far The Tracking News has counted a total of three objects listed on the NEOCP at some point today.

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 19 August '08

Minor Planet Electronic Circulars

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

MPEC 2008-Q10 - "22:38 UT" - 2008 QB

<< DOU on 19 Aug. '08 >>  MPEC 2008-Q09 - "06:08 UT" - Daily Orbit Update

Observers  on 19 August '08

Twelve observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-Q10 -- 2008 QB
H55Astronomical Research Obs. (ARO) in Illinois, 30 in MPEC 2008-Q09 -- 2008 PV16, 2008 PF1, 2008 OX2, 2008 OX1, 2008 OS7, 2008 OQ8, 2008 OO, 2008 ON, 2008 OB9, 2008 NB, 2008 MU1, 2008 MR1, 2008 KZ5, 2008 JZ7, 2008 JR26, 2007 YO56, 2003 GW, 1999 JU6, 1998 SC15, 162911, 142348, 141851, 138847, 138846, 12538, 108906, 9058, 6611, 5731, 5011
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-Q10 -- 2008 QB
F84Hibiscus Obs. in Tahiti, 2 in MPEC 2008-Q09 -- 2008 ON10, 2002 EA3
J59Linceo Obs. in Spain, 1 in MPEC 2008-Q09 -- 4179
932McCarthy Obs. in Connecticut, 1 in MPEC 2008-Q09 -- 188452
118Modra Obs. in Slovakia, 1 in MPEC 2008-Q10 -- 2008 QB
A13Naef Obs. in Switzerland, 3 in MPEC 2008-Q09 -- 2008 NU, 189058, 188452
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2008-Q09 -- 2004 SB56, 90403
E12Siding Spring Survey in New South Wales, 1 in MPEC 2008-Q10 -- 2008 QB
H53Thompsonville Obs. in Illinois, 2 in MPEC 2008-Q09 -- 188452, 4179
F85Tiki Obs. in Tahiti, 3 in MPEC 2008-Q09 -- 2008 PJ3, 2008 NO3, 2008 MB5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 August '08

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.
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 OB9JPL Sentry1456210613.2e-09-4.89-4.890JPL: "Analysis based on 34 observations spanning 19.915 days (2008-Jul-29.34054 to 2008-Aug-18.25596)." Diameter approximately 1.200 km. from mean, weighted H=17.3.
2008 OOJPL Sentry1456210011.4e-06-3.35-3.350JPL: "Analysis based on 93 observations spanning 23.132 days (2008-Jul-26.09211 to 2008-Aug-18.2239)." Diameter approximately 0.380 km. from mean, weighted H=19.7.

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 19 August '08

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

2259Grabbed MPEC 2008-Q10 - 2008 QB - see above
1456Noted that JPL Sentry has updated its 2008 OB9 risk assessment - see above
Noted that JPL Sentry has updated its 2008 OO risk assessment - see above
Grabbed MPEC 2008-Q09 - Daily Orbit Update - see above
1455The NEOCP has become active