Contents  on 29 November '10

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 29 November '10

The MPC's NEO Confirmation Page has 8 listings: 2 new, 6 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and six updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of eleven listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 29 November '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been four MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-W54 - "19:04 UT" - 2010 WP8


<< DOU on 29 Nov. '10 >>  MPEC 2010-W53 - "07:12 UT" - Daily Orbit Update


MPEC 2010-W52 - "05:19 UT" - 2010 WR7


MPEC 2010-W51 - "05:13 UT" - 2010 WQ7

Observers  on 29 November '10

Fourteen observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2010-W51, 2010-W52 & 2010-W53 -- 2010 WR7, 2010 WQ7, 2010 WH3, 2010 WG3, 2010 WF3, 2010 VW194, 2010 VU98, 2010 VP21, 2010 VM65, 2010 VH1, 2010 VD99
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2010-W52 -- 2010 WR7
300Bisei Spaceguard Center in Japan, 1 in MPEC 2010-W51 -- 2010 WQ7
703Catalina Sky Survey (CSS) in Arizona, 18 in MPECs 2010-W51, 2010-W52 & 2010-W53 -- 2010 WR7, 2010 WQ7, 2010 TC47, 2010 LR68, 96590, 68278, 250162, 249595, 242211, 237551, 207945, 170903, 154589, 153814, 137084, 12538, 5869, 3838
448Desert Moon Obs. in New Mexico, 5 in MPEC 2010-W53 -- 2010 VV21, 2010 UE7, 2010 SD13, 2005 VQ, 4401
H20Eastern Illinois Univ. Obs. in Illinois, 1 in MPEC 2010-W51 -- 2010 WQ7
379Hamamatsu-Yuto Obs. in Japan, 6 in MPEC 2010-W53 -- 2010 SC41, 2006 VB14, 96590, 143381, 5869, 3838
704LINEAR in New Mexico, 3 in MPECs 2010-W53 & 2010-W54 -- 2010 WP8, 88959, 10165
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-W51, 2010-W52 & 2010-W53 -- 2010 WR7, 2010 WQ7, 2010 VY71, 2010 SC41, 2010 NW117, 2003 HQ32
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-W51 & 2010-W52 -- 2010 WR7, 2010 WQ7
H36Sandlot Obs. in Kansas, 1 in MPEC 2010-W52 -- 2010 WR7
204Schiaparelli Obs. in Italy, 3 in MPECs 2010-W51, 2010-W52 & 2010-W54 -- 2010 WR7, 2010 WQ7, 2010 WP8
291Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2010-W53 -- 2010 WH3, 2010 VF1, 2010 TP55, 2010 MF1, 153814
H47Vicksburg Obs. in Mississippi, 4 in MPEC 2010-W53 -- 2010 TV149, 2010 LF86, 66146, 143381
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 November '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS 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.
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
2010 WH3JPL Sentry15512026-209465.8e-09-5.79-6.140JPL: "Analysis based on 17 observations spanning 2.0183 days (2010-Nov-27.2164 to 2010-Nov-29.23469)." Diameter approximately 0.289 km. from mean, weighted H=20.3.
NEODyS15512026-206632.76e-09-6.25-6.510NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2010-11-27.217 to 2010-11-29.235."
2010 WE3NEODyS17132022-2065181.25e-08-8.29-8.790NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2010-11-28.245 to 2010-11-28.307."
2010 VW194JPL Sentry15512042-2108244.5e-05-5.37-6.010JPL: "Analysis based on 24 observations spanning 13.036 days (2010-Nov-15.34197 to 2010-Nov-28.377632)." Diameter approximately 0.017 km. from mean, weighted H=26.5.
NEODyS15512047-2090182.82e-05-5.54-5.970NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2010-11-15.343 to 2010-11-28.378."

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 29 November '10

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

1907Grabbed MPEC 2010-W54 - 2010 WP8 - see above
1712Noted that NEODyS has posted 2010 WE3 as an impact risk - see above
1551Noted that JPL Sentry has updated its 2010 VW194 risk assessment - see above
Noted that NEODyS has updated its 2010 VW194 risk assessment - see above
Noted that JPL Sentry has updated its 2010 WH3 risk assessment - see above
Noted that NEODyS has posted 2010 WH3 as an impact risk - see above
Grabbed MPEC 2010-W53 - Daily Orbit Update - see above
0611Grabbed MPEC 2010-W52 - 2010 WR7 - see above
0516Grabbed MPEC 2010-W51 - 2010 WQ7 - see above