Contents  on 4 November '08

Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate 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 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 November '08

The MPC's NEO Confirmation Page has 5 listings: 4 new, 1 updated

When last checked at 2306 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and one updated listings. All of these were "one nighters." So far The Tracking News has counted a total of six 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 4 November '08

Minor Planet Electronic Circulars

As of last check at 2306 UTC, there have been four MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-V24 - "13:19 UT" - 2008 VB1


<< DOU on 4 Nov. '08 >>  MPEC 2008-V23 - "07:16 UT" - Daily Orbit Update


MPEC 2008-V22 - "04:12 UT" - 2008 VV


MPEC 2008-V21 - "04:10 UT" - 2008 UK199

Observers  on 4 November '08

Sixteen observing facilities appear in today's MPECs.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 3 in MPEC 2008-V23 -- 2008 SQ, 2006 GZ, 2001 UZ16
H55Astronomical Research Obs. (ARO) in Illinois, 7 in MPECs 2008-V21 & 2008-V23 -- 2008 VK, 2008 VH, 2008 VF, 2008 VE, 2008 UZ201, 2008 UK199, 2008 UB95
703Catalina Sky Survey in Arizona, 1 in MPEC 2008-V21 -- 2008 UK199
113Drebach Obs. in Germany, 9 in MPECs 2008-V22 & 2008-V23 -- 2008 VV, 2008 SQ1, 2008 SQ, 2008 SP7, 2008 SN1, 2008 SE, 2008 MR1, 2005 TZ51, 2001 TW1
J19El Maestrat Obs., 1 in MPEC 2008-V23 -- 1620
J77Golden Hill Obs. in England, 1 in MPEC 2008-V21 -- 2008 UK199
J95Great Shefford Obs. in England, 1 in MPEC 2008-V21 -- 2008 UK199
704LINEAR in New Mexico, 8 in MPECs 2008-V21 & 2008-V23 -- 2008 UK199, 2008 RG98, 2002 WP11, 190135, 155140, 11500, 5143, 4183
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2008-V21 & 2008-V24 -- 2008 VB1, 2008 UK199
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-V23 -- 2008 SD85
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2008-V22 & 2008-V23 -- 2008 VV, 2006 WQ29, 2004 TU11, 52689
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-V21 -- 2008 UK199
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2008-V23 -- 2008 RS26, 162117
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2008-V23 & 2008-V24 -- 2008 VB1, 2006 UP, 2001 VC76, 159923
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2008-V23 & 2008-V24 -- 2008 VN, 2008 VB1, 2008 RV
H53Thompsonville Obs. in Illinois, 5 in MPEC 2008-V23 -- 2008 US4, 2008 SQ1, 2008 SE, 2001 UY4, 8567
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 November '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2306 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
Note that the time horizon for JPL is 100 years from today and for NEODyS is 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
2008 VB1JPL Sentry18122026-2106162.4e-08-5.19-5.700JPL: "Analysis based on 13 observations spanning .95803 days (2008-Nov-03.36295 to 2008-Nov-04.32098)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
2008 VMNEODyS13052024-203132.22e-05-6.85-6.850NEODyS: "Based on 20 optical observations (of which 6 are rejected as outliers) from 2008/11/03.244 to 2008/11/03.387."
2008 VLNEODyS13062025-2090393.98e-07-7.84-8.480NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2008/11/02.311 to 2008/11/02.435."
2008 VHJPL Sentry13052055-209039.6e-10-7.13-7.440JPL: "Analysis based on 12 observations spanning 1.1171 days (2008-Nov-02.14413 to 2008-Nov-03.26123)." Diameter approximately 0.230 km. from mean, weighted H=20.8.
NEODyS13052027-208973.87e-10-7.37-7.920NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2008/11/02.145 to 2008/11/03.262."
2008 VEJPL Sentry1305210712.3e-08-6.35-6.350JPL: "Analysis based on 24 observations spanning 2.0936 days (2008-Nov-01.31627 to 2008-Nov-03.40991)." Diameter approximately 0.140 km. from mean, weighted H=21.9.
2008 UA202NEODyS18122022-20902241.25e-03-4.85-5.770NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2008/10/29.355 to 2008/10/30.321."

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 4 November '08

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

1812Noted that NEODyS has posted 2008 UA202 as an impact risk - see above
Noted that JPL Sentry has posted 2008 VB1 as an impact risk - see above
1433Grabbed MPEC 2008-V24 - 2008 VB1 - see above
1305Noted that JPL Sentry has updated its 2008 VE risk assessment - see above
Noted that JPL Sentry has posted 2008 VH as an impact risk - see above
Noted that NEODyS has posted 2008 VH as an impact risk - see above
Noted that NEODyS has posted 2008 VL as an impact risk - see above
Noted that NEODyS has posted 2008 VM as an impact risk - see above
Grabbed MPEC 2008-V23 - Daily Orbit Update - see above
0525Grabbed MPEC 2008-V21 - 2008 UK199 - see above
Grabbed MPEC 2008-V22 - 2008 VV - see above