Contents  on 17 November '07


Editor's note: On November 14th we launched an additional semi-automated news page, the Traffic Report for Earth's Busy Neighborhood. (It is "automated" in that, like with this page and the CRT, all the data is collected and published by program scripts without human intervention, but, to be exact, it is "semi-automated" since these activities don't yet run unattended.)

The latest news: framed access (best), RSS news feed RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site, which now has its own backup RSS news feed.

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 17 November '07

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

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had eight new and four updated listings. Of these, eleven were "one nighters." So far The Tracking News has counted a total of 23 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 17 November '07

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been seven MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-W17 - "22:12 UT" - 2007 WE

MPEC 2007-W16 - "22:09 UT" - 2007 VP243

MPEC 2007-W15 - "22:03 UT" - 2007 VO243

MPEC 2007-W14 - "21:58 UT" - 2007 VN243

MPEC 2007-W13 - "21:52 UT" - 2007 VM243

MPEC 2007-W12 - "21:49 UT" - 2007 VL243

<< DOU on 17 Nov. '07 >>  MPEC 2007-W11 - "07:12 UT" - Daily Orbit Update

Observers  on 17 November '07

Fourteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 8 in MPECs 2007-W11, 2007-W13, 2007-W14, 2007-W15, 2007-W16 & 2007-W17 -- 2007 WE, 2007 VP243, 2007 VO243, 2007 VN243, 2007 VM243, 2007 VF191, 2007 VE191, 2007 TX18
703Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2007-W11 & 2007-W15 -- 2007 VO243, 162173
176Consell Obs. in Spain, 3 in MPEC 2007-W11 -- 2007 WB, 2007 VM184, 2007 VK184
J95Great Shefford Obs. in England, 1 in MPEC 2007-W13 -- 2007 VM243
701Junk Bond Obs. in Arizona, 1 in MPEC 2007-W15 -- 2007 VO243
682Kanab Obs. in Utah, 2 in MPECs 2007-W13 & 2007-W16 -- 2007 VP243, 2007 VM243
704LINEAR in New Mexico, 1 in MPEC 2007-W11 -- 162004
474Mt. John Obs. in New Zealand, 2 in MPECs 2007-W12 & 2007-W15 -- 2007 VO243, 2007 VL243
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2007-W13, 2007-W14, 2007-W16 & 2007-W17 -- 2007 WE, 2007 VP243, 2007 VN243, 2007 VM243
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2007-W11 -- 2007 VQ4, 2007 VM184, 2007 VD12, 2007 UX1, 2007 SP6, 2007 GS3, 2005 YW55, 2004 TY16, 1993 TQ2, 11500
B04Saint-Barthelemy Obs. in Italy, 2 in MPEC 2007-W11 -- 2007 VD12, 2007 US6
434San Benedetto Po Obs. in Italy, 1 in MPEC 2007-W11 -- 143678
D21Shenton Park Obs. in Western Australia, 7 in MPEC 2007-W11 -- 2007 WA, 2007 VK184, 2007 VH184, 2007 VG184, 2007 VD138, 2007 VD12, 2007 TC66
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPECs 2007-W11 & 2007-W12 -- 2007 VV83, 2007 VL243, 2007 VK8, 2007 TA19, 2004 XY60, 54686

Impact Risk Monitoring  on 17 November '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2354 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 WCNEODyS1631203311.71e-11-10.72-10.720NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2007/11/16.345 to 2007/11/16.444."
JPL Sentry02332026-2106212.3e-08-7.92-8.520JPL: "Analysis based on 12 observations spanning .09889 days (2007-Nov-16.3441 to 2007-Nov-16.44299)." Diameter approximately 0.028 km. from mean, weighted H=25.4.
2007 WAJPL Sentry1435R E M O V E DJPL: Risk listing removed at 1156 UTC.
2007 VE191NEODyS16312015-2044135.92e-06-3.76-3.800NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2007/11/15.267 to 2007/11/16.163."
2007 VC191NEODyS19592012-2090668.02e-09-5.79-6.460NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2007/11/14.313 to 2007/11/15.352."
2007 VB191NEODyS1631208814.44e-09-8.62-8.620NEODyS: "Based on 11 optical observations (of which 1 are rejected as outliers) from 2007/11/14.266 to 2007/11/16.348."
2007 VK184NEODyS14362041-2068307.61e-05-2.53-2.820NEODyS: "Based on 49 optical observations (of which 0 are rejected as outliers) from 2007/11/12.140 to 2007/11/16.909."
JPL Sentry14352035-2062257.9e-05-2.52-2.810JPL: "Analysis based on 49 observations spanning 4.7697 days (2007-Nov-12.13904 to 2007-Nov-16.90871)." Diameter approximately 0.140 km. from mean, weighted H=22.0.

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 a variant 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" to learn more.

Chronology  on 17 November '07

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

2234Grabbed MPEC 2007-W12 - 2007 VL243 - see above
Grabbed MPEC 2007-W13 - 2007 VM243 - see above
Grabbed MPEC 2007-W14 - 2007 VN243 - see above
Grabbed MPEC 2007-W15 - 2007 VO243 - see above
Grabbed MPEC 2007-W16 - 2007 VP243 - see above
Grabbed MPEC 2007-W17 - 2007 WE - see above
1958Noted that NEODyS has posted 2007 VC191 as an impact risk - see above
1631Noted that NEODyS has posted 2007 VB191 as an impact risk - see above
Noted that NEODyS has posted 2007 VE191 as an impact risk - see above
Noted that NEODyS has posted 2007 WC as an impact risk - see above
1436Noted that NEODyS has updated its 2007 VK184 risk assessment - see above
Grabbed MPEC 2007-W11 - Daily Orbit Update - see above
1435Noted that JPL Sentry has updated its 2007 VK184 risk assessment - see above
Noted that JPL Sentry has removed 2007 WA as an impact risk - see above
0233Noted that JPL Sentry has posted 2007 WC as an impact risk - see above