Contents  on 18 November '07

Resources:

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 18 November '07

The MPC's NEO Confirmation Page has 21 listings: 6 new, 15 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had six new and fifteen updated listings. Of these, fourteen 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 18 November '07

Minor Planet Electronic Circulars

As of last check at 2355 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 18 Nov. '07 >>  MPEC 2007-W18 - "07:15 UT" - Daily Orbit Update

Observers  on 18 November '07

Seventeen observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2007-W18 -- 2007 VG189
703Catalina Sky Survey (CSS) in Arizona, 9 in MPEC 2007-W18 -- 2007 UB6, 2007 RU12, 2002 UO3, 99907, 53426, 16636, 161998, 152787, 2340
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2007-W18 -- 2007 VD12, 2007 SE11, 2007 PU11, 162142
704LINEAR in New Mexico, 5 in MPEC 2007-W18 -- 2007 VX137, 2007 TB23, 138971, 3553, 1580
699LONEOS in Arizona, 2 in MPEC 2007-W18 -- 2007 VQ4, 2007 UB6
474Mt. John Obs. in New Zealand, 4 in MPEC 2007-W18 -- 2007 VW7, 2007 VH186, 2007 UQ13, 2007 UM12
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPEC 2007-W18 -- 2007 VW137, 2007 US65, 2007 UQ51, 2007 TX18, 18736, 136617, 3671, 2201
A13Naef Obs. in Switzerland, 1 in MPEC 2007-W18 -- 2007 VO243
H56Northbrook Meadow Obs., 1 in MPEC 2007-W18 -- 2007 LR32
H066Andrew Lowe in Alberta via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2007-W18 -- 162004
434San Benedetto Po Obs. in Italy, 1 in MPEC 2007-W18 -- 162142
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-W18 -- 1997 ET30
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2007-W18 -- 2007 VW137, 2007 UR3, 2007 TG1, 2001 JM1
147Suno Obs. in Italy, 1 in MPEC 2007-W18 -- 2007 VA85
6735Jim Young via Table Mtn. Obs. in southern California, 4 in MPEC 2007-W18 -- 2007 VL184, 2007 VJ184, 2007 VB191, 2007 VA188
H53Thompsonville Obs., 7 in MPEC 2007-W18 -- 2007 US6, 2007 TG15, 2007 TB23, 2007 SE11, 2007 RU12, 2007 PU11, 2007 LR32
689!program code {!} via U.S. Naval Obs. Flagstaff Station in Arizona, 1 in MPEC 2007-W18 -- 2007 VO243

Impact Risk Monitoring  on 18 November '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2355 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 VP243NEODyS14432026-208591.21e-08-6.00-6.440NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2007/11/15.266 to 2007/11/17.247."
JPL Sentry05342026-2102161.9e-08-5.84-6.550JPL: "Analysis based on 14 observations spanning 1.9806 days (2007-Nov-15.26549 to 2007-Nov-17.24613)." Diameter approximately 0.184 km. from mean, weighted H=21.3.
2007 VN243NEODyS14432035-2086211.54e-06-4.51-4.810NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2007/11/15.245 to 2007/11/17.329."
JPL Sentry05342030-204571.0e-07-5.46-5.770JPL: "Analysis based on 15 observations spanning 2.0849 days (2007-Nov-15.24381 to 2007-Nov-17.32867)." Diameter approximately 0.110 km. from mean, weighted H=22.4.
2007 VB191NEODyS1442R E M O V E D
2007 VG189JPL Sentry14432012-2106164.8e-09-4.49-4.640JPL: "Analysis based on 11 observations spanning 2.8701 days (2007-Nov-13.42445 to 2007-Nov-16.294557)." Diameter approximately 0.746 km. from mean, weighted H=18.3.
NEODyS14432012-2085585.43e-08-3.93-4.310NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2007/11/13.425 to 2007/11/16.295."
2007 VW137NEODyS1442R E M O V E D

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 18 November '07

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

1444Grabbed MPEC 2007-W18 - Daily Orbit Update - see above
1443Noted that JPL Sentry has posted 2007 VG189 as an impact risk - see above
Noted that NEODyS has updated its 2007 VG189 risk assessment - see above
1442Noted that NEODyS has removed 2007 VB191 as an impact risk - see above
Noted that NEODyS has posted 2007 VN243 as an impact risk - see above
Noted that NEODyS has posted 2007 VP243 as an impact risk - see above
Noted that NEODyS has removed 2007 VW137 as an impact risk - see above
0534Noted that JPL Sentry has posted 2007 VN243 as an impact risk - see above
Noted that JPL Sentry has posted 2007 VP243 as an impact risk - see above