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Contents  on 24 August '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.

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NEOCP Activity  on 24 August '10

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (checked at 2358 UTC). It was last noted active on August 22nd.

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New MPECs  on 24 August '10

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 24 Aug. '10 >>  MPEC 2010-Q24 - "06:09 UT" - Daily Orbit Update

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Observers  on 24 August '10

Seven observing facilities appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 18 in MPEC 2010-Q24 -- 2010 PY75, 2010 PS66, 2010 PP2, 2010 PM9, 2010 PL9, 2010 OD101, 2010 OC, 2010 MW1, 2010 MF1, 2007 TY18, 2007 EJ26, 2005 GE59, 2004 BW58, 2004 BO41, 2002 TY57, 2002 EY2, 2000 PQ27, 4660
B88Bigmuskie Obs. in Italy, 3 in MPEC 2010-Q24 -- 2010 PR66, 2002 NE71, 23187
160Castelmartini Obs. in Italy, 8 in MPEC 2010-Q24 -- 2010 PR66, 2010 PM9, 2010 OC, 2002 NE71, 66146, 23187, 6239, 5786
J95Great Shefford Obs. in England, 5 in MPEC 2010-Q24 -- 2010 PY75, 2010 PS66, 2010 PR66, 2010 OL101, 2010 MR87
J75La Sagra Obs. in Spain, 1 in MPEC 2010-Q24 -- 4197
5682David Tholen's team on Mauna Kea in Hawaii, 3 in MPEC 2010-Q24 -- 2010 NH, 2010 MU112, 2010 LV108
510Siegen Obs. in Germany, 1 in MPEC 2010-Q24 -- 4055
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

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Impact Risk Monitoring  on 24 August '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 PR66JPL Sentry15042098-210721.8e-07-4.23-4.230JPL: "Analysis based on 97 observations spanning 8.6155 days (2010-Aug-15.2648 to 2010-Aug-23.88029)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
2010 NHNEODyS1516208912.14e-07-7.24-7.240NEODyS: "Based on 63 optical observations (of which 0 are rejected as outliers) from 2010/07/04.423 to 2010/07/19.242."
JPL Sentry15042089-209221.7e-06-6.34-6.400JPL: "Analysis based on 63 observations spanning 14.818 days (2010-Jul-04.42235 to 2010-Jul-19.240805)." Diameter approximately 0.025 km. from mean, weighted H=25.7.
2010 MU112NEODyS18332040-207251.38e-08-5.49-5.670NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2010/06/30.073 to 2010/07/14.579."
JPL Sentry15042040-207241.0e-08-5.58-5.800JPL: "Analysis based on 25 observations spanning 14.506 days (2010-Jun-30.07214 to 2010-Jul-14.577992)." Diameter approximately 0.220 km. from mean, weighted H=20.9.
2010 LV108NEODyS1504R E M O V E D-
JPL Sentry1504R E M O V E DJPL: Risk listing removed at 0949 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.

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Chronology  on 24 August '10

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

1833Noted that NEODyS has updated its 2010 MU112 risk assessment - see above
1504Noted that JPL Sentry has removed 2010 LV108 as an impact risk - see above
Noted that NEODyS has removed 2010 LV108 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 MU112 risk assessment - see above
Noted that JPL Sentry has updated its 2010 NH risk assessment - see above
Noted that NEODyS has reposted 2010 NH as an impact risk - see above
Noted that JPL Sentry has updated its 2010 PR66 risk assessment - see above
Grabbed MPEC 2010-Q24 - Daily Orbit Update - see above