Contents  on 10 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 10 November '07

The MPC's NEO Confirmation Page has 11 listings: 1 new, 10 updated

When last checked at 2340 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and ten updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of fourteen 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 10 November '07

Minor Planet Electronic Circulars

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


MPEC 2007-V75 - "15:30 UT" - Comet P/2007 V2 (Hill)


<< DOU on 10 Nov. '07 >>  MPEC 2007-V74 - "07:11 UT" - Daily Orbit Update

Observers  on 10 November '07

A total of 23 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 20 in MPEC 2007-V74 -- 2007 VX6, 2007 VW7, 2007 VV6, 2007 VU6, 2007 VT6, 2007 VQ4, 2007 VL8, 2007 VL3, 2007 VK8, 2007 VK3, 2007 VJ3, 2007 VH8, 2007 VH3, 2007 VE8, 2007 VD3, 2007 VA3, 2007 UT65, 2007 US51, 2007 UQ13, 2007 TZ18
235CAST Obs. in Italy, 1 in MPEC 2007-V75 -- P/2007 V2
703Catalina Sky Survey (CSS) in Arizona, 11 in MPEC 2007-V74 -- 2007 VN3, 2007 VF8, 2004 TY16, 2001 RY47, 1994 AW1, 66251, 53426, 16636, 162173, 152787, 3553
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2007-V74 -- 143678
704LINEAR in New Mexico, 13 in MPEC 2007-V74 -- 2007 VQ4, 2007 VF8, 2007 TX18, 2001 FZ6, 65706, 36236, 31346, 17182, 162173, 138971, 3553, 1865, 1620
130Lumezzane Obs. in Italy, 3 in MPEC 2007-V74 -- 2007 UP6, 2001 UY16, 1999 AQ10
J40Malaga Obs. in Spain, 1 in MPEC 2007-V74 -- 99907
711McDonald Obs. in Texas, 5 in MPECs 2007-V74 & 2007-V75 -- 2007 VW83, 2007 VD12, P/2007 V2, 2007 UR3, 2000 SB8
474Mt. John Obs. in New Zealand, 4 in MPECs 2007-V74 & 2007-V75 -- 2007 VV83, 2007 VR29, 2007 VL8, P/2007 V2
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2007-V74 & 2007-V75 -- 2007 VV83, 2007 VU6, 2007 VL3, P/2007 V2, 2002 UA31, 4486
J93Mt. Tuffley Obs. in England, 1 in MPEC 2007-V74 -- 4954
608NEAT's USAF Haleakala telescope in Hawaii, 2 in MPEC 2007-V74 -- 2007 GG, 2006 SS19
A24New Millennium Obs. in Italy, 3 in MPEC 2007-V74 -- 2007 LR32, 86324, 137084
D29Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2007-V74 -- 2000 SY162
473Remanzacco Obs. in Italy, 1 in MPEC 2007-V75 -- P/2007 V2
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2007-V74 -- 2007 US6
D21Shenton Park Obs. in Western Australia, 2 in MPEC 2007-V74 -- 2007 VL8, 2007 VD12
E12Siding Spring Survey (SSS) in New South Wales, 9 in MPEC 2007-V74 -- 2007 UQ51, 2007 UH, 2007 UG6, 2007 TJ19, 2007 TD71, 2007 TC66, 2007 TA19, 2007 DL8, 39796
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-V75 -- P/2007 V2
291Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2007-V74 -- 2007 VO84, 2007 VN3, 2007 VJ3, 2007 VD12, 2007 UN12
147Suno Obs. in Italy, 1 in MPEC 2007-V75 -- P/2007 V2
673Table Mtn. Obs. in southern California, 1 in MPEC 2007-V75 -- P/2007 V2
H53Thompsonville Obs., 5 in MPEC 2007-V74 -- 2007 UK40, 2007 TG15, 2007 LR32, 145656, 138883

Impact Risk Monitoring  on 10 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 VA85NEODyS12042048-2089103.34e-09-2.84-3.430NEODyS: "Based on 55 optical observations (of which 1 are rejected as outliers) from 2007/11/04.090 to 2007/11/09.059."
2007 VO84JPL Sentry1550R E M O V E DJPL: Risk listing removed at 1425 UTC.
NEODyS1203R E M O V E D
2007 VE8JPL Sentry1335206212.2e-05-4.99-4.990JPL: "Analysis based on 24 observations spanning 3.1025 days (2007-Nov-05.3392 to 2007-Nov-08.44173)." Diameter approximately 0.028 km. from mean, weighted H=25.4.
NEODyS1204206212.08e-05-5.02-5.020NEODyS: "Based on 25 optical observations (of which 1 are rejected as outliers) from 2007/11/05.340 to 2007/11/08.442."
2007 VJ3JPL Sentry1550209916.9e-09-8.24-8.240JPL: "Analysis based on 40 observations spanning 6.8645 days (2007-Nov-02.5055 to 2007-Nov-09.36998)." Diameter approximately 0.036 km. from mean, weighted H=24.9.
2007 US51NEODyS12042079-208261.48e-06-6.96-7.000NEODyS: "Based on 42 optical observations (of which 1 are rejected as outliers) from 2007/10/31.385 to 2007/11/07.316."
JPL Sentry12032082-210242.3e-06-6.78-6.880JPL: "Analysis based on 42 observations spanning 6.9310 days (2007-Oct-31.38411 to 2007-Nov-07.31507)." Diameter approximately 0.012 km. from mean, weighted H=27.2.
2007 UN12NEODyS12292069-2090226.95e-05-6.38-7.130NEODyS: "Based on 117 optical observations (of which 0 are rejected as outliers) from 2007/10/21.373 to 2007/11/09.211."
JPL Sentry12032069-2107252.3e-04-5.94-6.730JPL: "Analysis based on 117 observations spanning 18.837 days (2007-Oct-21.37247 to 2007-Nov-09.20987)." Diameter approximately 0.006 km. from mean, weighted H=28.7.

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 10 November '07

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

1921Grabbed MPEC 2007-V75 - Comet P/2007 V2 (Hill) - see above
1550Noted that JPL Sentry has updated its 2007 VJ3 risk assessment - see above
Noted that JPL Sentry has removed 2007 VO84 as an impact risk - see above
1335Noted that JPL Sentry has updated its 2007 VE8 risk assessment - see above
1229Noted that NEODyS has updated its 2007 UN12 risk assessment - see above
1204Noted that NEODyS has updated its 2007 US51 risk assessment - see above
Noted that NEODyS has updated its 2007 VE8 risk assessment - see above
Grabbed MPEC 2007-V74 - Daily Orbit Update - see above
1203Noted that JPL Sentry has updated its 2007 UN12 risk assessment - see above
Noted that JPL Sentry has updated its 2007 US51 risk assessment - see above
Noted that NEODyS has posted 2007 VA85 as an impact risk - see above
Noted that NEODyS has removed 2007 VO84 as an impact risk - see above