Contents  on 7 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 7 November '07

The MPC's NEO Confirmation Page has 5 listings: 5 updated

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

Minor Planet Electronic Circulars

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


MPEC 2007-V60 - "22:06 UT" - 2007 VR29


MPEC 2007-V59 - "14:52 UT" - 2007 VD12


<< DOU on 7 Nov. '07 >>  MPEC 2007-V58 - "07:12 UT" - Daily Orbit Update

Observers  on 7 November '07

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2007-V60 -- 2007 VR29
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2007-V58 -- 99907, 66251
127Bornheim Obs. in Germany, 6 in MPEC 2007-V58 -- 2007 TS19, 2007 SG11, 2007 RF5, 2007 PU11, 2002 RC118, 22771
703Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2007-V58 & 2007-V59 -- 2007 VD12, 1862
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2007-V59 -- 2007 VD12
734Farpoint Obs. in Kansas, 1 in MPEC 2007-V60 -- 2007 VR29
J95Great Shefford Obs. in England, 1 in MPEC 2007-V58 -- 2007 VJ8
B15Inastars Obs. in Germany, 4 in MPEC 2007-V58 -- 2007 VX7, 2007 UL12, 53426, 153591
704LINEAR in New Mexico, 8 in MPECs 2007-V58 & 2007-V60 -- 2007 VR29, 2007 US6, 2007 TB23, 2002 UA31, 18736, 162273, 5143, 2212
711McDonald Obs. in Texas, 1 in MPEC 2007-V59 -- 2007 VD12
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2007-V58 -- 3553
A13Naef Obs. in Switzerland, 4 in MPEC 2007-V58 -- 2007 VE8, 2007 TV68, 2005 YW55, 18736
A24New Millennium Obs. in Italy, 5 in MPEC 2007-V58 -- 2007 US6, 2007 LR32, 99907, 143678, 2212
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 11 in MPEC 2007-V58 -- 2007 UW3, 2007 UL12, 2007 TX18, 2007 SE11, 2007 RD20, 2007 PU11, 2007 GS3, 2004 TY16, 21374, 162004, 11500
D29Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2007-V58 -- 18736
D21Shenton Park Obs. in Western Australia, 4 in MPEC 2007-V58 -- 2007 VL8, 2007 VF8, 2007 VD3, 2007 UL12
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2007-V58 -- 2007 TD71, 2007 TA19
691Spacewatch 0.9m telescope in Arizona, 7 in MPEC 2007-V58 -- 2007 US51, 2007 TV68, 2005 YW55, 2002 XR14, 2002 JM97, 141079, 6489
291Spacewatch 1.8m telescope in Arizona, 9 in MPEC 2007-V58 -- 2007 VV7, 2007 VJ3, 2007 VH3, 2007 VC3, 2007 VA3, 2007 UY1, 2007 UR3, 2007 UN12, 2007 TK15
H53Thompsonville Obs., 4 in MPEC 2007-V58 -- 2007 RF5, 2007 PU11, 2007 LR32, 2002 UA31
A82Trieste Obs., 2 in MPEC 2007-V58 -- 2007 VV6, 2007 PU11
A92Urseanu Obs. in Romania, 1 in MPEC 2007-V58 -- 4954

Impact Risk Monitoring  on 7 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.
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 VD12JPL Sentry23202020-21071193.4e-07-3.92-4.660JPL: "Analysis based on 19 observations spanning 2.0326 days (2007-Nov-05.37916 to 2007-Nov-07.41176)." Diameter approximately 0.329 km. from mean, weighted H=20.1.
2007 VJ8JPL Sentry1546210317.8e-08-7.47-7.470JPL: "Analysis based on 10 observations spanning 1.1166 days (2007-Nov-05.25778 to 2007-Nov-06.3744)." Diameter approximately 0.035 km. from mean, weighted H=24.9.
2007 VE8JPL Sentry2320206213.8e-06-5.74-5.740JPL: "Analysis based on 18 observations spanning 1.5691 days (2007-Nov-05.3392 to 2007-Nov-06.90833)." Diameter approximately 0.028 km. from mean, weighted H=25.4.
NEODyS1254206213.86e-06-5.74-5.740NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2007/11/05.340 to 2007/11/06.909."
2007 VV7JPL Sentry1546R E M O V E DJPL: Risk listing removed at 1535 UTC.
NEODyS1223R E M O V E D
2007 VJ3JPL Sentry1546209911.5e-08-7.90-7.900JPL: "Analysis based on 31 observations spanning 3.9196 days (2007-Nov-02.5055 to 2007-Nov-06.42508)." Diameter approximately 0.036 km. from mean, weighted H=24.9.
2007 VH3JPL Sentry1712R E M O V E DJPL: Risk listing removed at 1654 UTC.
2007 VC3JPL Sentry1253209216.4e-10-9.35-9.350JPL: "Analysis based on 25 observations spanning 4.0341 days (2007-Nov-02.26874 to 2007-Nov-06.30286)." Diameter approximately 0.036 km. from mean, weighted H=24.9.
2007 VA3JPL Sentry1253R E M O V E DJPL: Risk listing removed at 1248 UTC.
2007 US51JPL Sentry15462082-210252.0e-06-6.85-6.960JPL: "Analysis based on 39 observations spanning 4.9110 days (2007-Oct-31.38411 to 2007-Nov-05.29514)." Diameter approximately 0.012 km. from mean, weighted H=27.2.
NEODyS15462062-208251.2e-06-7.05-7.090NEODyS: "Based on 39 optical observations (of which 1 are rejected as outliers) from 2007/10/31.385 to 2007/11/05.296."
2007 UN12NEODyS13372069-2090236.14e-05-6.44-7.160NEODyS: "Based on 107 optical observations (of which 0 are rejected as outliers) from 2007/10/21.373 to 2007/11/06.367."
JPL Sentry12232075-2107242.2e-04-5.95-6.760JPL: "Analysis based on 107 observations spanning 15.994 days (2007-Oct-21.37247 to 2007-Nov-06.36626)." Diameter approximately 0.006 km. from mean, weighted H=28.7.
2007 UY1JPL Sentry1223R E M O V E DJPL: Risk listing removed at 1126 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 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 7 November '07

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

2320Noted that JPL Sentry has posted 2007 VD12 as an impact risk - see above
Noted that JPL Sentry has updated its 2007 VE8 risk assessment - see above
Grabbed MPEC 2007-V60 - 2007 VR29 - see above
1712Noted that JPL Sentry has removed 2007 VH3 as an impact risk - see above
1546Noted that JPL Sentry has updated its 2007 US51 risk assessment - see above
Noted that NEODyS has updated its 2007 US51 risk assessment - see above
Noted that JPL Sentry has updated its 2007 VJ3 risk assessment - see above
Noted that JPL Sentry has posted 2007 VJ8 as an impact risk - see above
Noted that JPL Sentry has removed 2007 VV7 as an impact risk - see above
Grabbed MPEC 2007-V59 - 2007 VD12 - see above
1337Noted that NEODyS has updated its 2007 UN12 risk assessment - see above
1254Noted that NEODyS has updated its 2007 VE8 risk assessment - see above
1253Noted that JPL Sentry has removed 2007 VA3 as an impact risk - see above
Noted that JPL Sentry has updated its 2007 VC3 risk assessment - see above
1223Noted that JPL Sentry has updated its 2007 UN12 risk assessment - see above
Noted that JPL Sentry has removed 2007 UY1 as an impact risk - see above
Noted that NEODyS has removed 2007 VV7 as an impact risk - see above
Grabbed MPEC 2007-V58 - Daily Orbit Update - see above