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Contents  on 2 August '08

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 2 August '08

The MPC's NEO Confirmation Page has 3 listings: 3 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of four 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.

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New MPECs  on 2 August '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 2 Aug. '08 >>  MPEC 2008-P06 - "06:09 UT" - Daily Orbit Update

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Observers  on 2 August '08

Thirteen observing facilities appear in today's MPEC.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-P06 -- 2008 OO
H55Astronomical Research Obs. (ARO) in Illinois, 27 in MPEC 2008-P06 -- 2008 OY2, 2008 OX2, 2008 OX1, 2008 OV2, 2008 OS9, 2008 OS7, 2008 OP8, 2008 OO8, 2008 OO1, 2008 OO, 2008 ON8, 2008 ON10, 2008 OM8, 2008 OM, 2008 OB9, 2008 OA6, 2008 NX, 2008 NU, 2008 NB, 2008 MR1, 2008 LW8, 2008 KZ5, 2008 JZ7, 2008 JZ30, 2008 JR26, 2008 JO24, 2005 QE30
069Baldone Obs. in Latvia, 1 in MPEC 2008-P06 -- 2008 OS9
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-P06 -- 2008 OP8
F84Hibiscus Obs. in Tahiti, 2 in MPEC 2008-P06 -- 2008 OS7, 2008 ON
704LINEAR in New Mexico, 3 in MPEC 2008-P06 -- 2008 OM, 87311, 3200
A06Mataro Obs. in Spain, 1 in MPEC 2008-P06 -- 2008 OS9
932McCarthy Obs. in Connecticut, 1 in MPEC 2008-P06 -- 2008 OX1
900Moriyama Obs. in Japan, 2 in MPEC 2008-P06 -- 2008 OX1, 2008 OS9
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2008-P06 -- 2008 OX1, 2008 OS9, 2008 MU1, 2005 TZ51, 2005 RC34, 2001 TA45
A98Taurus-1 Obs. in Belarus, 1 in MPEC 2008-P06 -- 35107
H53Thompsonville Obs. in Illinois, 6 in MPEC 2008-P06 -- 35107, 188452, 11398, 8567, 4179, 1917
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-P06 -- 2008 OT7
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 2 August '08

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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is 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
2008 OB9NEODyS13422013-2088691.17e-07-2.60-3.220NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/07/29.341 to 2008/08/01.222."
JPL Sentry13412014-2106751.9e-07-2.50-3.130JPL: "Analysis based on 15 observations spanning 2.8804 days (2008-Jul-29.34054 to 2008-Aug-01.22097)." Diameter approximately 1.233 km. from mean, weighted H=17.2.
2008 OP8NEODyS13422026-205852.33e-10-6.41-6.840NEODyS #2 for the day: "Based on 32 optical observations (of which 1 are rejected as outliers) from 2008/07/30.403 to 2008/08/01.379."
JPL Sentry1341206011.6e-10-6.81-6.810JPL: "Analysis based on 31 observations spanning 1.9623 days (2008-Jul-30.41557 to 2008-Aug-01.37792)." Diameter approximately 0.500 km. from mean, weighted H=19.1.
2008 OO8JPL Sentry1341R E M O V E DJPL: Risk listing removed at 0852 UTC.
NEODyS1341R E M O V E D-
2008 OT7NEODyS1341R E M O V E D-
2008 OS7JPL Sentry1341210813.4e-10-7.32-7.320JPL: "Analysis based on 35 observations spanning 2.0439 days (2008-Jul-30.245 to 2008-Aug-01.28885)." Diameter approximately 0.290 km. from mean, weighted H=20.3.
2008 OX2JPL Sentry1341R E M O V E DJPL: Risk listing removed at 0902 UTC.
NEODyS1341R E M O V E D-
2008 OO1JPL Sentry1341210713.8e-07-6.52-6.520JPL: "Analysis based on 28 observations spanning 5.7035 days (2008-Jul-26.55201 to 2008-Aug-01.25549)." Diameter approximately 0.039 km. from mean, weighted H=24.7.
2008 OONEODyS1342207512.34e-08-5.02-5.020NEODyS: "Based on 68 optical observations (of which 0 are rejected as outliers) from 2008/07/26.093 to 2008/08/02.006."
JPL Sentry13412075-210045.1e-07-3.78-3.930JPL: "Analysis based on 68 observations spanning 6.9135 days (2008-Jul-26.09211 to 2008-Aug-02.005602)." Diameter approximately 0.375 km. from mean, weighted H=19.8.

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 2 August '08

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

1342Noted that NEODyS has updated its 2008 OB9 risk assessment - see above
Noted that NEODyS has updated its 2008 OO risk assessment - see above
Noted that NEODyS has updated its 2008 OP8 risk assessment - see above
1341Noted that JPL Sentry has updated its 2008 OB9 risk assessment - see above
Noted that JPL Sentry has updated its 2008 OO risk assessment - see above
Noted that JPL Sentry has updated its 2008 OO1 risk assessment - see above
Noted that JPL Sentry has removed 2008 OO8 as an impact risk - see above
Noted that NEODyS has removed 2008 OO8 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 OP8 risk assessment - see above
Noted that JPL Sentry has updated its 2008 OS7 risk assessment - see above
Noted that NEODyS has removed 2008 OT7 as an impact risk - see above
Noted that JPL Sentry has removed 2008 OX2 as an impact risk - see above
Noted that NEODyS has removed 2008 OX2 as an impact risk - see above
Grabbed MPEC 2008-P06 - Daily Orbit Update - see above
0032Noted that NEODyS has posted 2008 OP8 as an impact risk - see above