Contents  on 3 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 3 August '08

The MPC's NEO Confirmation Page has 9 listings: 2 new, 7 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and seven updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of ten 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 3 August '08

Minor Planet Electronic Circulars

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

MPEC 2008-P09 - "22:39 UT" - 2007 RT15

MPEC 2008-P08 - "17:09 UT" - Comet C/2008 L3 (Hill)

<< DOU on 3 Aug. '08 >>  MPEC 2008-P07 - "06:09 UT" - Daily Orbit Update

Observers  on 3 August '08

Nineteen observing facilities appear in today's MPECs.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 8 in MPEC 2008-P07 -- 2003 OB4, 2001 XW266, 65690, 35107, 154278, 11398, 8567, 4257
H55Astronomical Research Obs. (ARO) in Illinois, 12 in MPECs 2008-P07 & 2008-P08 -- 2008 OX2, 2008 OX1, 2008 OV2, 2008 OS7, 2008 OO8, 2008 OO1, 2008 OO, 2008 OM8, 2008 MU1, 2008 LQ16, C/2008 L3, 2008 EB32
069Baldone Obs. in Latvia, 1 in MPEC 2008-P07 -- 2008 OS9
A77Chante-Perdrix Obs. in France, 1 in MPEC 2008-P08 -- C/2008 L3
448Desert Moon Obs. in New Mexico, 4 in MPEC 2008-P07 -- 2008 OO, 2008 MQ1, 2008 JT35, 2001 WA25
J27El Guijo Obs. in Spain, 4 in MPEC 2008-P07 -- 164400, 8567, 1917, 1620
J95Great Shefford Obs. in England, 2 in MPEC 2008-P07 -- 2008 ON10, 2008 OC9
F84Hibiscus Obs. in Tahiti, 3 in MPEC 2008-P07 -- 2008 OS7, 2008 OO, 2001 LC
704LINEAR in New Mexico, 2 in MPEC 2008-P07 -- 2008 LW8, 11398
J59Linceo Obs. in Spain, 2 in MPEC 2008-P07 -- 188452, 11398
213Montcabre Obs. in Spain, 1 in MPEC 2008-P07 -- 2008 OC9
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-P08 -- C/2008 L3
675Mt. Palomar in southern California, 1 in MPEC 2008-P09 -- 2007 RT15
A53Peschiera del Garda Obs. in Italy, 3 in MPEC 2008-P07 -- 2008 OS9, 2008 MU1, 2005 TU45
204Schiaparelli Obs. in Italy, 1 in MPEC 2008-P08 -- C/2008 L3
E12Siding Spring Survey (SSS) in New South Wales, 7 in MPEC 2008-P07 -- 2008 OX8, 2008 OT7, 2008 OC9, 2008 NQ3, 2008 LN16, 85839, 142563
A78Stia Obs. in Italy, 1 in MPEC 2008-P07 -- 2008 OS7
H53Thompsonville Obs. in Illinois, 7 in MPEC 2008-P07 -- 2008 OX1, 2008 OS9, 2008 OS7, 188452, 11398, 8567, 4179
B42Vitebsk Obs. in Belarus, 2 in MPEC 2008-P07 -- 35107, 8567
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 August '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2357 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 OS7JPL Sentry1419R E M O V E DJPL: Risk listing removed at 0852 UTC.
2008 OO1JPL Sentry1419210713.0e-07-6.61-6.610JPL: "Analysis based on 32 observations spanning 6.7255 days (2008-Jul-26.55201 to 2008-Aug-02.27749)." Diameter approximately 0.040 km. from mean, weighted H=24.6.
2008 OOJPL Sentry14192075-210044.7e-07-3.83-4.020JPL: "Analysis based on 74 observations spanning 7.2557 days (2008-Jul-26.09211 to 2008-Aug-02.34784)." Diameter approximately 0.373 km. from mean, weighted H=19.8.
NEODyS1419207512.89e-09-5.94-5.940NEODyS: "Based on 74 optical observations (of which 0 are rejected as outliers) from 2008/07/26.093 to 2008/08/02.349."

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 3 August '08

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

2259Grabbed MPEC 2008-P09 - 2007 RT15 - see above
1737Grabbed MPEC 2008-P08 - Comet C/2008 L3 (Hill) - see above
1419Noted that JPL Sentry has updated its 2008 OO risk assessment - see above
Noted that NEODyS has updated its 2008 OO risk assessment - see above
Noted that JPL Sentry has updated its 2008 OO1 risk assessment - see above
Noted that JPL Sentry has removed 2008 OS7 as an impact risk - see above
Grabbed MPEC 2008-P07 - Daily Orbit Update - see above