Contents  on 9 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 9 November '08

The MPC's NEO Confirmation Page has 11 listings: 5 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had five new and six updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of fifteen 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 9 November '08

Minor Planet Electronic Circulars

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


<< DOU on 9 Nov. '08 >>  MPEC 2008-V46 - "07:17 UT" - Daily Orbit Update

Observers  on 9 November '08

Twelve observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 22 in MPEC 2008-V46 -- 2008 VQ4, 2008 UZ91, 2008 US5, 2008 UN90, 2008 UN3, 2008 UL3, 2008 UF7, 2008 UE7, 2008 UD7, 2008 UB7, 2008 TY9, 2008 TF4, 2008 SX7, 2008 SU1, 2008 SR7, 2008 SO, 2008 SE, 2008 RQ24, 2008 RE80, 2008 QZ, 2008 QD1, 2008 MH1
703Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2008-V46 -- 2008 SQ, 2007 AE12, 2003 WX25, 54071, 52768, 144901, 1620
448Desert Moon Obs. in New Mexico, 4 in MPEC 2008-V46 -- 2008 VB1, 2008 UL90, 2008 SX245, 2002 XP90
240Herrenberg Obs. in Germany, 1 in MPEC 2008-V46 -- 162679
704LINEAR in New Mexico, 5 in MPEC 2008-V46 -- 2008 VU4, 2008 US4, 2006 SZ217, 20460, 141079
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2008-V46 -- 162900
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-V46 -- 2006 SZ217, 2001 LM5
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPEC 2008-V46 -- 2008 UO90, 2008 TK157, 2008 HB38, 29075, 190166, 7358, 2368
A13Naef Obs. in Switzerland, 1 in MPEC 2008-V46 -- 2006 SZ217
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2008-V46 -- 2008 UO90, 2008 TK157, 190166, 159923, 6178
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2008-V46 -- 2008 VZ3, 2008 VH, 2008 UZ91, 2008 UW99, 2008 UW91, 2008 UE202, 2003 YX1
A98Taurus-1 Obs. in Belarus, 1 in MPEC 2008-V46 -- 162900
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 November '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 VV4NEODyS0946204013.46e-11-7.41-7.410NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/11/07.394 to 2008/11/07.977."
JPL Sentry07572021-2095171.3e-08-4.84-5.230JPL: "Analysis based on 11 observations spanning .58282 days (2008-Nov-07.39366 to 2008-Nov-07.97648)." Diameter approximately 0.444 km. from mean, weighted H=19.4.
2008 VR4NEODyS09462010-2059481.8e-09-5.71-5.980NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/11/07.068 to 2008/11/07.294."
2008 VB1JPL Sentry1609R E M O V E DJPL #2 for the day: Risk listing removed at 1052 UTC.
2008 UW99JPL Sentry1609209312.5e-07-6.72-6.720JPL: "Analysis based on 24 observations spanning 8.0045 days (2008-Oct-31.45784 to 2008-Nov-08.46233)." Diameter approximately 0.041 km. from mean, weighted H=24.6.
2008 UU95JPL Sentry07572062-207623.4e-10-8.65-8.790JPL: "Analysis based on 34 observations spanning 7.9854 days (2008-Oct-30.37925 to 2008-Nov-07.3647)." Diameter approximately 0.072 km. from mean, weighted H=23.4.
2008 UB7JPL Sentry16092044-2100324.8e-05-3.64-4.070JPL #2 for the day: "Analysis based on 66 observations spanning 4.8668 days (2008-Oct-26.25877 to 2008-Oct-31.12558)." Diameter approximately 0.057 km. from mean, weighted H=23.9.

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 9 November '08

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

1609Noted that JPL Sentry has updated its 2008 UB7 risk assessment - see above
Noted that JPL Sentry has reposted 2008 UW99 as an impact risk - see above
Noted that JPL Sentry has removed 2008 VB1 as an impact risk - see above
0946Noted that NEODyS has posted 2008 VR4 as an impact risk - see above
Noted that NEODyS has posted 2008 VV4 as an impact risk - see above
Grabbed MPEC 2008-V46 - Daily Orbit Update - see above
0757Noted that JPL Sentry has updated its 2008 UB7 risk assessment - see above
Noted that JPL Sentry has updated its 2008 UU95 risk assessment - see above
Noted that JPL Sentry has updated its 2008 VB1 risk assessment - see above
Noted that JPL Sentry has posted 2008 VV4 as an impact risk - see above