Contents  on 29 September '07


Notes: Due to travel, these pages will update irregularly for the rest of the month.
Until September 16th this daily news page, which had included links to news and science papers as well as some occasional original reporting, was called Major News About Minor Objects. Without the news-link and science-link sections, this page was renamed as The Tracking News to more accurately reflect its continuing purpose.

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.

NEOCP Activity  on 29 September '07

The MPC's NEO Confirmation Page has 5 listings: 1 new, 4 updated

When last checked at 1431 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and four updated listings. Of these, two were "one nighters."

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 29 September '07

Minor Planet Electronic Circulars

As of last check at 1431 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 29 Sept. '07 >>  MPEC 2007-S69 - "06:06 UT" - Daily Orbit Update

Observers  on 29 September '07

Seven observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2007-S69 -- 2007 SG11
170Begues Obs. in Spain, 5 in MPEC 2007-S69 -- 2007 LR32, 2002 SV, 16636, 163902, 162173
300Bisei Spaceguard Center in Japan, 1 in MPEC 2007-S69 -- 162173
670Camarillo Obs. in southern California, 2 in MPEC 2007-S69 -- 164216, 162173
H51Greiner Research Obs. in Wisconsin, 2 in MPEC 2007-S69 -- 2007 SG11, 162117
355Hadano Obs. in Japan, 1 in MPEC 2007-S69 -- 162173
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2007-S69 -- 2007 RT146

Impact Risk Monitoring  on 29 September '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 1431 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 SR11NEODyS14322017-207169.71e-09-6.00-6.130NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2007/09/26.343 to 2007/09/27.468."

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 29 September '07

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

1431Noted that NEODyS has posted 2007 SR11 as an impact risk - see above
Grabbed MPEC 2007-S69 - Daily Orbit Update - see above