Contents  on 30 November '10


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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 30 November '10

The MPC's NEO Confirmation Page has 9 listings: 3 new, 6 updated

When last checked at 2324 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and six updated listings. Of these, eight were "one nighters." The Tracking News counted a total of fifteen listings on the NEOCP at some point on this day.

New MPECs  on 30 November '10

Minor Planet Electronic Circulars

There were six MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-W60 - "10:49 UT" - 2010 WV8

MPEC 2010-W59 - "10:44 UT" - 2010 WU8

MPEC 2010-W58 - "10:39 UT" - 2010 WT8

MPEC 2010-W57 - "10:12 UT" - 2004 BW1

<< DOU on 30 Nov. '10 >>  MPEC 2010-W56 - "07:12 UT" - Daily Orbit Update

MPEC 2010-W55 - "02:01 UT" - 2010 WR8

Observers  on 30 November '10

Nineteen observers appeared in this day's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 22 in MPECs 2010-W55, 2010-W56 & 2010-W58 -- 2010 WT8, 2010 WR8, 2010 WH3, 2010 WH, 2010 VY139, 2010 VQ98, 2010 VQ21, 2010 VO1, 2010 VB, 2010 VA12, 2010 UX7, 2010 UX6, 2010 UQ7, 2010 UH7, 2010 UF7, 2010 UD, 2010 TC55, 2010 SD13, 2010 OC103, 2010 MW1, 2010 LR68, 2002 VE68
300Bisei Spaceguard Center in Japan, 3 in MPECs 2010-W56, 2010-W57 & 2010-W60 -- 2010 WV8, 2010 WP8, 2004 BW1
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2010-W60 -- 2010 WV8
J95Great Shefford Obs. in England, 1 in MPEC 2010-W60 -- 2010 WV8
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2010-W56 -- 2010 SC41, 2010 RF181, 2007 VC138
844Los Molinos Obs. in Uruguay, 2 in MPEC 2010-W56 -- 2010 TV149, 2010 SC41
5682David Tholen's team on Mauna Kea in Hawaii, 4 in MPEC 2010-W56 -- 2010 VZ75, 2010 VC72, 2010 VA76, 2010 TU54
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2010-W55, 2010-W57, 2010-W58 & 2010-W59 -- 2010 WU8, 2010 WT8, 2010 WR8, 2004 BW1
A13Naef Obs. in Switzerland, 4 in MPEC 2010-W56 -- 2010 WG3, 250162, 170903, 4688
A24New Millennium Obs. in Italy, 1 in MPEC 2010-W60 -- 2010 WV8
C20Pulkovo Obs. Kislovodsk Mtn. Station in Russia, 1 in MPEC 2010-W60 -- 2010 WV8
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2010-W56 -- 1999 XR35
473Remanzacco Obs. in Italy, 1 in MPEC 2010-W60 -- 2010 WV8
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2010-W55, 2010-W57 & 2010-W60 -- 2010 WV8, 2010 WR8, 2004 BW1
204Schiaparelli Obs. in Italy, 3 in MPECs 2010-W55, 2010-W57 & 2010-W60 -- 2010 WV8, 2010 WR8, 2004 BW1
291Spacewatch 1.8m telescope in Arizona, 12 in MPECs 2010-W56, 2010-W57, 2010-W58 & 2010-W59 -- 2010 WU8, 2010 WT8, 2010 WR7, 2010 WH3, 2010 VX39, 2010 VJ139, 2010 VF1, 2010 VA1, 2010 UF7, 2010 TL117, 2010 OP1, 2004 BW1
6734Mike Hicks via Table Mtn. Obs. in southern California, 1 in MPEC 2010-W60 -- 2010 WV8
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-W60 -- 2010 WV8
718Wiggins Obs. in Utah, 1 in MPEC 2010-W60 -- 2010 WV8
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 November '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2324 and JPL at 2359 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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.





Notes for Today's Latest Risk Assessments
2010 WT8JPL Sentry17382020-2109202.7e-08-6.19-6.550JPL: "Analysis based on 13 observations spanning 3.0847 days (2010-Nov-27.19228 to 2010-Nov-30.27703)." Diameter approximately 0.127 km. from mean, weighted H=22.1.
2010 WH3JPL Sentry17382026-204228.9e-10-6.44-6.620JPL: "Analysis based on 22 observations spanning 2.9980 days (2010-Nov-27.2164 to 2010-Nov-30.21437)." Diameter approximately 0.269 km. from mean, weighted H=20.5.
NEODyS17382026-204221.26e-09-6.63-6.870NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2010-11-27.217 to 2010-11-30.215."
2010 VQ98JPL Sentry17382102-210521.7e-05-6.84-7.000JPL: "Analysis based on 46 observations spanning 17.946 days (2010-Nov-10.43786 to 2010-Nov-28.38351)." Diameter approximately 0.008 km. from mean, weighted H=28.2.
2010 UE51JPL Sentry23592077-207822.7e-05-6.55-6.550JPL: "Analysis based on 165 observations spanning 26.752 days (2010-Oct-29.25716 to 2010-Nov-25.00931)." Diameter approximately 0.007 km. from mean, weighted H=28.3.

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 30 November '10

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

2359Noted that JPL Sentry has reposted 2010 UE51 as an impact risk - see above
1738Noted that JPL Sentry has updated its 2010 VQ98 risk assessment - see above
Noted that JPL Sentry has updated its 2010 WH3 risk assessment - see above
Noted that NEODyS has updated its 2010 WH3 risk assessment - see above
Noted that JPL Sentry has posted 2010 WT8 as an impact risk - see above
Grabbed MPEC 2010-W56 - Daily Orbit Update - see above
Grabbed MPEC 2010-W57 - 2004 BW1 - see above
Grabbed MPEC 2010-W58 - 2010 WT8 - see above
Grabbed MPEC 2010-W59 - 2010 WU8 - see above
Grabbed MPEC 2010-W60 - 2010 WV8 - see above
0204Grabbed MPEC 2010-W55 - 2010 WR8 - see above