Contents  on 4 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 4 October '07

The MPC's NEO Confirmation Page has 12 listings: 4 new, 8 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and eight updated listings. Of these, seven 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 4 October '07

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-T15 - "13:34 UT" - Comet P/2007 R3 (Gibbs)

<< DOU on 4 Oct. '07 >>  MPEC 2007-T14 - "06:06 UT" - Daily Orbit Update

MPEC 2007-T13 - "03:47 UT" - 6344 P-L = 2007 RR9

Observers  on 4 October '07

Fourteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 7 in MPEC 2007-T14 -- 2007 SV2, 2007 SS1, 2007 RV9, 2007 PD8, 2007 MM13, 2007 LQ19, 1999 VP11
J51Atlante Obs. in the Canary Islands, 4 in MPEC 2007-T14 -- 2007 RF5, 2007 PU11, 2002 RC118, 1865
A94Cormons Obs. in Italy, 2 in MPEC 2007-T14 -- 2002 SV, 16636
106Crni Vrh Obs. in Slovenia, 2 in MPEC 2007-T14 -- 162567, 11500
448Desert Moon Obs. in New Mexico, 6 in MPECs 2007-T13 & 2007-T14 -- 2007 SV11, 2007 RU17, 2007 RU12, 2007 RT19, 2007 RR9, 2007 RP133
J95Great Shefford Obs. in England, 3 in MPEC 2007-T14 -- 2007 TD, 2007 SV11, 2007 RZ8
355Hadano Obs. in Japan, 1 in MPEC 2007-T15 -- P/2007 R3
118Modra Obs. in Slovakia, 2 in MPEC 2007-T14 -- 2007 SG11, 2007 LR32
A24New Millennium Obs. in Italy, 3 in MPEC 2007-T14 -- 40267, 154453, 145656
D21Shenton Park Obs. in Western Australia, 5 in MPECs 2007-T13 & 2007-T14 -- 2007 SG11, 2007 RR9, 2007 RA20, 2007 DL8, 2000 TH1
E12Siding Spring Survey in New South Wales, 5 in MPEC 2007-T14 -- 2007 RW17, 2007 RV19, 2007 RU9, 2007 DL8, 54686
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2007-T14 -- 2007 SR11, 2007 SR1, 2007 JE40, 2004 QD20
673Table Mtn. Obs. in southern California, 1 in MPEC 2007-T15 -- P/2007 R3
F85Tiki Obs. in Tahiti, 1 in MPEC 2007-T14 -- 2007 PD8

Impact Risk Monitoring  on 4 October '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2357 and JPL at 2358 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
6344 P-LJPL2200R E M O V E DJPL: Risk listing removed at 2123 UTC.
2007 SR11JPL13552022-202722.6e-09-6.54-6.690JPL: "Analysis based on 24 observations spanning 7.1378 days (2007-Sep-26.34262 to 2007-Oct-03.48045)." 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 4 October '07

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

2200Noted that JPL has removed 6344 P-L as an impact risk - see above
1505Noted that NEODyS has removed 6344 P-L as an impact risk - see above
1356Grabbed MPEC 2007-T14 - Daily Orbit Update - see above
1355Noted that JPL has updated its 2007 SR11 risk assessment - see above
Noted that NEODyS has removed 2007 SR11 as an impact risk - see above
Grabbed MPEC 2007-T15 - Comet P/2007 R3 (Gibbs) - see above
0356Grabbed MPEC 2007-T13 - 6344 P-L = 2007 RR9 - see above