Contents  on 1 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 1 November '07

The MPC's NEO Confirmation Page has 10 listings: 4 new, 6 updated

When last checked at 2302 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and six updated listings. Of these, seven 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 1 November '07

Minor Planet Electronic Circulars

As of last check at 2302 UTC, there have been four MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-V04 - "14:06 UT" - 2007 US51


MPEC 2007-V03 - "14:00 UT" - 2007 UR51


MPEC 2007-V02 - "13:38 UT" - 2007 UQ51


<< DOU on 1 Nov. '07 >>  MPEC 2007-V01 - "06:10 UT" - Daily Orbit Update

Observers  on 1 November '07

A total of 21 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 27 in MPEC 2007-V01 -- 2007 US3, 2007 UM12, 2007 UB6, 2007 TZ18, 2007 TX24, 2007 TM15, 2007 TL23, 2007 TK15, 2007 TH72, 2007 TH3, 2007 TH19, 2007 TA25, 2007 SW2, 2007 SR11, 2007 SR1, 2007 RX19, 2007 RT19, 2007 RT147, 2007 RL133, 2007 QA2, 2007 PE8, 2007 OY, 2007 OV, 2007 LQ19, 2002 AC29, 2000 MU1, 1990 SM
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2007-V01 -- 153591
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2007-V01 & 2007-V04 -- 2007 US51, 2007 TG25, 2004 KE1, 2002 UA31, 2002 RC118, 162215, 162142, 3671, 2212
151Eschenberg Obs. in Switzerland, 2 in MPEC 2007-V01 -- 2007 UP6, 2007 TB23
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-V01 -- 2007 UK40
651Grasslands Obs. in Arizona, 2 in MPECs 2007-V02 & 2007-V03 -- 2007 UR51, 2007 UQ51
J95Great Shefford Obs. in England, 3 in MPEC 2007-V01 -- 2007 UN12, 2007 UL12, 2007 UK40
A17Guidestar Obs. in Germany, 1 in MPEC 2007-V01 -- 2007 UK40
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2007-V01 -- 2007 PU11, 2002 RC118
951Highworth Obs. in England, 1 in MPEC 2007-V01 -- 2007 LR32
704LINEAR in New Mexico, 6 in MPECs 2007-V01, 2007-V02 & 2007-V03 -- 2007 UR51, 2007 UQ51, 2007 TR65, 2007 RU17, 159495, 145656
699LONEOS in Arizona, 2 in MPECs 2007-V01 & 2007-V03 -- 2007 UR51, 2004 KE1
J40Malaga Obs. in Spain, 1 in MPEC 2007-V01 -- 2007 PU11
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2007-V01 -- 2006 WW1
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2007-V01 -- 141874
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2007-V01, 2007-V02 & 2007-V03 -- 2007 UR51, 2007 UQ51, 2007 TG25, 90373
941Pla D'Arguines Obs. in Spain, 1 in MPEC 2007-V01 -- 2007 TK8
E12Siding Spring Survey in New South Wales, 1 in MPEC 2007-V01 -- 2007 ML6
691Spacewatch 0.9m telescope in Arizona, 7 in MPEC 2007-V01 -- 2007 UN12, 2007 TK8, 2003 WM7, 143651, 8034, 6489, 4486
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2007-V01, 2007-V03 & 2007-V04 -- 2007 UY1, 2007 US51, 2007 UR51, 2007 UN12, 2007 TL23, 2007 TH1, 2007 SR11
H53Thompsonville Obs., 4 in MPEC 2007-V01 -- 2007 TG8, 2007 TG15, 2007 PU11, 2007 LR32

Impact Risk Monitoring  on 1 November '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2302 and JPL at 2303 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 US51JPL Sentry18592070-2106113.6e-06-6.65-7.210JPL: "Analysis based on 19 observations spanning 1.0238 days (2007-Oct-31.38411 to 2007-Nov-01.40792)." Diameter approximately 0.012 km. from mean, weighted H=27.2.
2007 UR51JPL Sentry18592016-2107681.7e-07-4.75-5.760JPL: "Analysis based on 18 observations spanning 1.0361 days (2007-Oct-31.19738 to 2007-Nov-01.23351)." Diameter approximately 0.192 km. from mean, weighted H=21.2.
2007 UN12NEODyS12582069-2090257.44e-05-6.36-7.150NEODyS: "Based on 75 optical observations (of which 0 are rejected as outliers) from 2007/10/21.373 to 2007/10/31.474."
JPL Sentry12572075-2107242.1e-04-5.98-6.860JPL: "Analysis based on 75 observations spanning 10.100 days (2007-Oct-21.37247 to 2007-Oct-31.47294)." Diameter approximately 0.006 km. from mean, weighted H=28.8.
2007 UL12JPL Sentry1257209415.4e-09-5.95-5.950JPL: "Analysis based on 33 observations spanning 5.5879 days (2007-Oct-25.47694 to 2007-Oct-31.06479)." Diameter approximately 0.260 km. from mean, weighted H=20.5.
2007 UY1JPL Sentry12572097-210436.5e-08-6.58-6.870JPL: "Analysis based on 46 observations spanning 13.973 days (2007-Oct-18.14415 to 2007-Nov-01.11698)." Diameter approximately 0.093 km. from mean, weighted H=22.8.
2007 TH72NEODyS1258208711.84e-09-8.43-8.430NEODyS: "Based on 40 optical observations (of which 1 are rejected as outliers) from 2007/10/12.211 to 2007/10/28.219."
JPL Sentry1257210216.7e-10-8.94-8.940JPL: "Analysis based on 38 observations spanning 13.015 days (2007-Oct-15.20289 to 2007-Oct-28.21824)." Diameter approximately 0.047 km. from mean, weighted H=24.3.

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 1 November '07

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

1859Noted that JPL Sentry has posted 2007 UR51 as an impact risk - see above
Noted that JPL Sentry has posted 2007 US51 as an impact risk - see above
1519Grabbed MPEC 2007-V04 - 2007 US51 - see above
1405Grabbed MPEC 2007-V02 - 2007 UQ51 - see above
Grabbed MPEC 2007-V03 - 2007 UR51 - see above
1258Noted that NEODyS has updated its 2007 TH72 risk assessment - see above
Noted that NEODyS has updated its 2007 UN12 risk assessment - see above
Grabbed MPEC 2007-V01 - Daily Orbit Update - see above
1257Noted that JPL Sentry has reposted 2007 TH72 as an impact risk - see above
Noted that JPL Sentry has updated its 2007 UL12 risk assessment - see above
Noted that JPL Sentry has updated its 2007 UN12 risk assessment - see above
Noted that JPL Sentry has updated its 2007 UY1 risk assessment - see above