Contents  on 7 October '07

Resources:

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 7 October '07

The MPC's NEO Confirmation Page has 6 listings: 2 new, 4 updated

When last checked at 1608 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and four updated listings. All of these were "one nighters." So far Tracking News has counted a total of seven objects listed on the NEOCP at some point today.

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 7 October '07

Minor Planet Electronic Circulars

As of last check at 1608 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-T24 - "15:38 UT" - 2007 TH3


<< DOU on 7 Oct. '07 >>  MPEC 2007-T23 - "06:07 UT" - Daily Orbit Update

Observers  on 7 October '07

Thirteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 2 in MPEC 2007-T23 -- 2007 RR17, 2007 RG1
703Catalina Sky Survey in Arizona, 1 in MPEC 2007-T24 -- 2007 TH3
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2007-T24 -- 2007 TH3
448Desert Moon Obs. in New Mexico, 6 in MPEC 2007-T23 -- 2007 SW2, 2007 SJ, 2007 RU17, 2007 RU10, 2007 RD20, 2004 VV
651Grasslands Obs. in Arizona, 1 in MPEC 2007-T24 -- 2007 TH3
024Heidelberg-Konigstuhl Obs. in Germany, 2 in MPEC 2007-T23 -- 2007 TH1, 2007 RE1
704LINEAR in New Mexico, 7 in MPECs 2007-T23 & 2007-T24 -- 2007 TH3, 2007 QK2, 2001 RY47, 2000 TH1, 100756, 4486, 2212
A70Lumijoki Obs. in Finland, 1 in MPEC 2007-T23 -- 2007 RR12
560Madonna di Dossobuono Obs. in Italy, 1 in MPEC 2007-T23 -- 2007 HE15
J69North Obs. in England, 1 in MPEC 2007-T23 -- 4954
473Remanzacco Obs. in Italy, 1 in MPEC 2007-T24 -- 2007 TH3
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2007-T23 -- 2007 TD, 66407, 16816
291Spacewatch 1.8m telescope in Arizona, 2 in MPEC 2007-T23 -- 2007 SR11, 2007 RZ8

Impact Risk Monitoring  on 7 October '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 1608 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.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2007 TH1JPL1421R E M O V E DJPL: Risk listing removed at 1020 UTC.
NEODyS1421R E M O V E D
2007 SR11JPL1421R E M O V E DJPL: Risk listing removed at 1026 UTC.

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 7 October '07

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

1608Grabbed MPEC 2007-T24 - 2007 TH3 - see above
1422Grabbed MPEC 2007-T23 - Daily Orbit Update - see above
1421Noted that JPL has removed 2007 SR11 as an impact risk - see above
Noted that JPL has removed 2007 TH1 as an impact risk - see above
Noted that NEODyS has removed 2007 TH1 as an impact risk - see above