Contents  on 26 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 26 August '08

The MPC's NEO Confirmation Page has 5 listings: 2 new, 3 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and three updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of eight 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 26 August '08

Minor Planet Electronic Circulars

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

MPEC 2008-Q43 - "17:39 UT" - 2008 QU3

MPEC 2008-Q42 - "17:24 UT" - 2007 VH305

MPEC 2008-Q41 - "17:00 UT" - 2008 QT3

<< DOU on 26 Aug. '08 >>  MPEC 2008-Q40 - "06:06 UT" - Daily Orbit Update

Observers  on 26 August '08

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 17 in MPECs 2008-Q40, 2008-Q41 & 2008-Q43 -- 2008 QZ, 2008 QU3, 2008 QT3, 2008 QD1, 2008 QC1, 2008 QA1, 2008 PF2, 2008 OX2, 2008 OS7, 2008 OO, 2008 ON8, 2008 OM8, 2008 OA6, 2008 MR1, 2008 MQ1, 2005 TZ51, 2003 FQ6
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2008-Q40 -- 164400
703Catalina Sky Survey in Arizona, 1 in MPEC 2008-Q40 -- 2008 JO20
G58Chabot Obs. in northern California, 2 in MPEC 2008-Q40 -- 2004 SB56, 90403
106Crni Vrh Obs. in Slovenia, 2 in MPECs 2008-Q41 & 2008-Q43 -- 2008 QU3, 2008 QT3
113Drebach Obs. in Germany, 1 in MPEC 2008-Q41 -- 2008 QT3
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-Q43 -- 2008 QU3
B23Fiamene Obs. in Italy, 2 in MPEC 2008-Q40 -- 2008 ON, 90403
246KLENOT in the Czech Republic, 1 in MPEC 2008-Q41 -- 2008 QT3
704LINEAR in New Mexico, 19 in MPECs 2008-Q40 & 2008-Q43 -- 2008 QZ, 2008 QU3, 2008 PL3, 2006 WZ2, 2004 XN44, 2004 SB56, 2004 NL8, 2003 RM, 90075, 66063, 65733, 163000, 12711, 105140, 7888, 5786, 4179, 3352, 887
A99Monte Baldo Obs. in Italy, 1 in MPEC 2008-Q43 -- 2008 QU3
J53Posadas Obs. in Spain, 1 in MPEC 2008-Q40 -- 188452
H59Prairie Grass Obs. in Indiana, 1 in MPEC 2008-Q43 -- 2008 QU3
473Remanzacco Obs. in Italy, 1 in MPEC 2008-Q41 -- 2008 QT3
461SZTE Asteroid Program in Hungary, 1 in MPEC 2008-Q42 -- 2007 VH305
H36Sandlot Obs. in Kansas, 1 in MPEC 2008-Q41 -- 2008 QT3
204Schiaparelli Obs. in Italy, 6 in MPECs 2008-Q40, 2008-Q41 & 2008-Q43 -- 2008 QU3, 2008 QT3, 2008 QB, 2008 ON, 1994 AW1, 189700
E12Siding Spring Survey (SSS) in New South Wales, 10 in MPEC 2008-Q40 -- 2008 QD1, 2008 QC1, 2008 QC, 2008 QB, 2008 QA1, 2008 NS1, 2008 LN16, 88254, 86829, 11398
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-Q40 -- 2008 QZ, 2008 OM
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2008-Q41 & 2008-Q43 -- 2008 QU3, 2008 QT3
B18Terskol Obs. in Russia, 2 in MPECs 2008-Q41 & 2008-Q43 -- 2008 QU3, 2008 QT3
H53Thompsonville Obs. in Illinois, 3 in MPEC 2008-Q40 -- 90403, 188452, 4179
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 26 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 QT3JPL Sentry19182016-21072091.5e-06-2.68-3.230JPL: "Analysis based on 41 observations spanning 1.4330 days (2008-Aug-24.89792 to 2008-Aug-26.3309)." Diameter approximately 0.613 km. from mean, weighted H=18.7.
2008 QC1JPL Sentry1453R E M O V E DJPL: Risk listing removed at 0850 UTC.
2008 QYNEODyS14532018-207954.45e-10-6.11-6.320NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2008/08/21.451 to 2008/08/23.473."
2008 OOJPL Sentry1453210017.3e-07-3.62-3.620JPL: "Analysis based on 100 observations spanning 30.072 days (2008-Jul-26.09211 to 2008-Aug-25.16363)." 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 26 August '08

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

1918Noted that JPL Sentry has posted 2008 QT3 as an impact risk - see above
1759Grabbed MPEC 2008-Q42 - 2007 VH305 - see above
Grabbed MPEC 2008-Q43 - 2008 QU3 - see above
1708Grabbed MPEC 2008-Q41 - 2008 QT3 - see above
1453Noted that JPL Sentry has updated its 2008 OO risk assessment - see above
Noted that JPL Sentry has removed 2008 QC1 as an impact risk - see above
Noted that NEODyS has posted 2008 QY as an impact risk - see above
Grabbed MPEC 2008-Q40 - Daily Orbit Update - see above