Contents  on 8 August '08


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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 8 August '08

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

When last checked at 2334 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two updated listings. Both of these were "one nighters." The Tracking News counted a total of six objects listed on the NEOCP at some point on this day.

New MPECs  on 8 August '08

Minor Planet Electronic Circulars

There were six MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-P41 - "20:55 UT" - 2006 UG185 = 1996 AV10

MPEC 2008-P40 - "15:54 UT" - 2008 PK9

MPEC 2008-P39 - "11:19 UT" - 2008 PJ9

MPEC 2008-P38 - "11:16 UT" - 2008 PH9

<< DOU on 8 Aug. '08 >>  MPEC 2008-P37 - "06:09 UT" - Daily Orbit Update

MPEC 2008-P36 - "03:21 UT" - 2007 RT12

Observers  on 8 August '08

Nineteen observing facilities appeared in this day's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 2 in MPECs 2008-P38 & 2008-P39 -- 2008 PJ9, 2008 PH9
703Catalina Sky Survey in Arizona, 1 in MPEC 2008-P41 -- 2006 UG185
639Dresden Obs. in Germany, 1 in MPEC 2008-P37 -- 65690
151Eschenberg Obs. in Switzerland, 1 in MPEC 2008-P39 -- 2008 PJ9
J95Great Shefford Obs. in England, 1 in MPEC 2008-P36 -- 2007 RT12
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2008-P37 -- 2004 SB56
F84Hibiscus Obs. in Tahiti, 2 in MPEC 2008-P37 -- 2008 PL3, 189008
185Jurassien-Vicques Obs. in Switzerland, 1 in MPEC 2008-P37 -- 2008 OM
932McCarthy Obs. in Connecticut, 1 in MPEC 2008-P37 -- 8567
118Modra Obs. in Slovakia, 1 in MPEC 2008-P37 -- 2008 PG7
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-P41 -- 2006 UG185
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2008-P37 -- 2008 NU, 2004 SB56, 2003 OB4
H36Sandlot Obs. in Kansas, 2 in MPECs 2008-P38 & 2008-P39 -- 2008 PJ9, 2008 PH9
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2008-P38, 2008-P39 & 2008-P40 -- 2008 PK9, 2008 PJ9, 2008 PH9
510Siegen Obs. in Germany, 4 in MPEC 2008-P37 -- 2008 OS9, 35107, 188452, 8567
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-P41 -- 2006 UG185
H53Thompsonville Obs. in Illinois, 6 in MPEC 2008-P37 -- 2008 OS9, 188452, 164400, 11398, 8567, 4179
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-P37 -- 2008 PG2
A55Vallemare di Borbona Obs. in Italy, 1 in MPEC 2008-P38 -- 2008 PH9
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 8 August '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2334 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 PK9JPL Sentry19002035-2097942.4e-06-4.44-5.520JPL: "Analysis based on 15 observations spanning .16255 days (2008-Aug-08.46082 to 2008-Aug-08.62337)." Diameter approximately 0.076 km. from mean, weighted H=23.3.
2008 PJ9JPL Sentry14092051-207166.4e-07-4.58-4.670JPL: "Analysis based on 15 observations spanning 1.7795 days (2008-Aug-06.59348 to 2008-Aug-08.373)." Diameter approximately 0.160 km. from mean, weighted H=21.6.

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 8 August '08

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

0229 8/9Grabbed MPEC 2008-P41 - 2006 UG185 = 1996 AV10 - see above
1900Noted that JPL Sentry has posted 2008 PK9 as an impact risk - see above
1701Grabbed MPEC 2008-P40 - 2008 PK9 - see above
1409Noted that JPL Sentry has posted 2008 PJ9 as an impact risk - see above
Grabbed MPEC 2008-P37 - Daily Orbit Update - see above
Grabbed MPEC 2008-P38 - 2008 PH9 - see above
Grabbed MPEC 2008-P39 - 2008 PJ9 - see above
0356Grabbed MPEC 2008-P36 - 2007 RT12 - see above