Contents  on 26 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 26 September '07

The MPC's NEO Confirmation Page has 4 listings: 3 new, 1 updated

When last checked at 1531 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and one 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 26 September '07

Minor Planet Electronic Circulars

As of last check at 1531 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 26 Sept. '07 >>  MPEC 2007-S58 - "06:08 UT" - Daily Orbit Update

Observers  on 26 September '07

Twelve observing facilities appear in today's MPEC.

CodeObserver / observatory
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2007-S58 -- 2007 QA2
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2007-S58 -- 2007 RP133
300Bisei Spaceguard Center in Japan, 4 in MPEC 2007-S58 -- 2007 PU11, 2007 PF28, 2007 PE8, 20826
448Desert Moon Obs. in New Mexico, 4 in MPEC 2007-S58 -- 2007 RV19, 2007 RR12, 2007 RQ9, 2007 RP133
639Dresden Obs. in Germany, 1 in MPEC 2007-S58 -- 1998 SD15
355Hadano Obs. in Japan, 2 in MPEC 2007-S58 -- 2007 PU11, 2007 LR32
A35Hormersdorf Obs. in Germany, 1 in MPEC 2007-S58 -- 2007 LR32
G96Mt. Lemmon Survey in Arizona, 8 in MPEC 2007-S58 -- 2007 RZ19, 2007 RX8, 2005 XW77, 2002 CE26, 1994 AW1, 159929, 115052, 3988
B38Santa Mama Obs. in Italy, 3 in MPEC 2007-S58 -- 2004 OT11, 2002 SV, 1998 SD15
E12Siding Spring Survey in New South Wales, 12 in MPEC 2007-S58 -- 2007 SS1, 2007 SP6, 2007 SO6, 2007 SE11, 2007 RV19, 2007 RA20, 2007 ML6, 2006 AD, 2005 SA71, 2004 XP164, 2001 RY47, 66959
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2007-S58 -- 2007 RS12, 2003 BT47, 6178
A78Stia Obs. in Italy, 3 in MPEC 2007-S58 -- 2002 UA31, 2000 RW37, 1999 JU3

Impact Risk Monitoring  on 26 September '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 1532 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 RY19NEODyS03442024-2090343.18e-05-3.52-3.810NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2007/09/14.354 to 2007/09/25.166."

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 26 September '07

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

1532Grabbed MPEC 2007-S58 - Daily Orbit Update - see above
0344Noted that NEODyS has updated its 2007 RY19 risk assessment - see above