Contents  on 16 August '07


The latest news: framed access (best), RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site.

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 this year 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.

Minor-Object News  on 16 August '07

Minor-Object Science  on 16 August '07

NEOCP Activity  on 16 August '07

The MPC's NEO Confirmation Page has 1 listing: 1 new

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new listing. This was a "one nighter." So far Major News has counted a total of three objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see Suno Observatory's Practical guide on how to observe NEOCP object.

New MPECs  on 16 August '07

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 16 Aug. '07 >>  MPEC 2007-Q01 - "06:08 UT" - Daily Orbit Update

Observers  on 16 August '07

Thirteen observing facilities appear in today's MPECs.

113Drebach Obs. in Germany, 2 in MPEC 2007-Q01 -- 86324, 85275
639Dresden Obs. in Germany, 2 in MPEC 2007-Q01 -- 145656, 85275
157Frasso Sabino Obs. in Italy, 7 in MPEC 2007-Q01 -- 2007 PU11, 2007 PP9, 2007 PE8, 2007 NC5, 2007 DK8, 2006 RO36, 1999 JU3
B19Iluro Obs. in Spain, 2 in MPEC 2007-Q01 -- 2007 DT103, 16636
704LINEAR in New Mexico, 4 in MPEC 2007-Q01 -- 2007 PP9, 2007 PE8, 2000 QT7, 66063
J59Linceo Obs. in Spain, 2 in MPEC 2007-Q01 -- 2007 PE8, 2007 DT103
474Mt. John Obs. in New Zealand, 4 in MPEC 2007-Q01 -- 2007 PD8, 2007 PR10, 2007 OX, 2002 SP
A56Parma Obs. in Italy, 3 in MPEC 2007-Q01 -- 2007 PQ9, 2007 PP9, 2006 YD
473Remanzacco Obs. in Italy, 1 in MPEC 2007-Q01 -- 2007 PS25
B38Santa Mama Obs. in Italy, 4 in MPEC 2007-Q01 -- 2007 PE8, 2007 LA15, 2007 CK26, 86324
E12Siding Spring Survey in New South Wales, 4 in MPEC 2007-Q01 -- 2007 PV27, 2007 PR10, 2007 PP6, 2007 PQ
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2007-Q01 -- 2007 FA, 2001 FZ6
A48Verona Obs. in Italy, 3 in MPEC 2007-Q01 -- 2007 PE8, 2007 NQ, 2007 CK26

Impact Risk Monitoring  on 16 August '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2354 UTC)
See the CRT page for a list of all objects rated recently as risks.
Note that the time horizon for JPL is 100 years from today and for NEODyS is now 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
2007 PV27JPL14002018-2107941.6e-05-2.29-2.700JPL: "Analysis based on 26 observations spanning 1.0200 days (2007-Aug-14.56587 to 2007-Aug-15.58591)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
NEODyS14002018-2086263.05e-06-2.93-3.370NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2007/08/14.567 to 2007/08/15.587."
2007 PF28NEODyS23122011-20901075.03e-09-4.17-4.700NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2007/08/15.306 to 2007/08/15.873."
JPL14002010-21051555.9e-08-3.48-3.940JPL: "Analysis based on 13 observations spanning .56716 days (2007-Aug-15.30532 to 2007-Aug-15.87248)." Diameter approximately 0.581 km. from mean, weighted H=18.8.

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 an 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" for more about this.

Chronology  on 16 August '07

Times are UTC for when the items were noted or added by Major News.

2312Noted that NEODyS has posted 2007 PF28 as an impact risk - see above
1651Added link to news story, "NASA: Carbon Composite Materials Might Not Be So Bad for Spacecraft"
Added link to news story, "Star mapping has universal appeal"
1531Added MOS paper, "An evolved disk surrounding the massive main sequence star MWC 297?" - see above
Added MOS paper, "Evaluating the Signatures of the Mean Motion Resonances in the Solar System" - see above
Added MOS paper, "VLBA determination of the distance to nearby star-forming regions I. The distance to T Tauri with 0.4% accuracy" - see above
1400Grabbed MPEC 2007-Q01 - Daily Orbit Update - see above
1359Noted that JPL has posted 2007 PF28 as an impact risk - see above
Noted that JPL has updated its 2007 PV27 risk assessment - see above
Noted that NEODyS has posted 2007 PV27 as an impact risk - see above