Contents  on 6 October '07


Notes: 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 6 October '07

The MPC's NEO Confirmation Page has 3 listings: 2 new, 1 updated

When last checked at 2356 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and one updated listings. All of these 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 6 October '07

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 6 Oct. '07 >>  MPEC 2007-T22 - "06:08 UT" - Daily Orbit Update

Observers  on 6 October '07

Fifteen observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 4 in MPEC 2007-T22 -- 2007 TD1, 2007 TC1, 2007 RT147, 2007 PF6
J65Celbridge Obs. in Ireland, 1 in MPEC 2007-T22 -- 2007 SG11
176Consell Obs. in Spain, 1 in MPEC 2007-T22 -- 2007 SG11
734Farpoint Obs. in Kansas, 1 in MPEC 2007-T22 -- 2007 TC1
F653FTP education program via Faulkes Telescope North in Hawaii, 1 in MPEC 2007-T22 -- 2007 RU12
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2007-T22 -- 2007 PE8
F84Hibiscus Obs. in Tahiti, 1 in MPEC 2007-T22 -- 2007 TC1
701Junk Bond Obs. in Arizona, 1 in MPEC 2007-T22 -- 2007 RT147
699LONEOS in Arizona, 1 in MPEC 2007-T22 -- 2007 RQ17
J40Malaga Obs. in Spain, 2 in MPEC 2007-T22 -- 2001 RY47, 4954
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2007-T22 -- 2001 RY47
A24New Millennium Obs. in Italy, 6 in MPEC 2007-T22 -- 53426, 164216, 163760, 162173, 162117, 105140
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2007-T22 -- 2007 LA15, 2007 FV42, 66407, 16816
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2007-T22 -- 2007 RU9, 2007 RF5
291Spacewatch 1.8m telescope in Arizona, 2 in MPEC 2007-T22 -- 2007 SR11, 2001 JM1

Impact Risk Monitoring  on 6 October '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2356 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 TH1NEODyS13532013-2085617.76e-08-5.55-6.010NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2007/10/05.320 to 2007/10/05.903."
JPL04582013-2107576.9e-08-5.63-6.090JPL: "Analysis based on 12 observations spanning .58277 days (2007-Oct-05.31927 to 2007-Oct-05.90204)." Diameter approximately 0.100 km. from mean, weighted H=22.6.
2007 TG1NEODyS13532021-208321.86e-10-9.15-9.230NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2007/10/04.256 to 2007/10/05.210."
2007 SR11JPL13532022-202728.6e-09-6.00-6.080JPL: "Analysis based on 29 observations spanning 8.9139 days (2007-Sep-26.34262 to 2007-Oct-05.25654)." Diameter approximately 0.150 km. from mean, weighted H=21.8.

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 6 October '07

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

1353Noted that JPL has updated its 2007 SR11 risk assessment - see above
Noted that NEODyS has posted 2007 TG1 as an impact risk - see above
Noted that NEODyS has posted 2007 TH1 as an impact risk - see above
Grabbed MPEC 2007-T22 - Daily Orbit Update - see above
0458Noted that JPL has posted 2007 TH1 as an impact risk - see above