Contents  on 17 July '08


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 17 July '08

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 2359 UTC). It was last noted active on July 15th.

New MPECs  on 17 July '08

Minor Planet Electronic Circulars

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

MPEC 2008-O09 - "23:31 UT" - PHAs

MPEC 2008-O08 - "23:31 UT" - Unusual Minor Planets

MPEC 2008-O07 - "23:31 UT" - Amors

MPEC 2008-O06 - "23:31 UT" - Atens and Apollos

MPEC 2008-O05 - "23:23 UT" - Distant Minor Planets

MPEC 2008-O04 - "23:12 UT" - Observable Comets

<< DOU on 17 July '08 >>  MPEC 2008-O03 - "06:07 UT" - Daily Orbit Update

Observers  on 17 July '08

Thirteen observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 27 in MPEC 2008-O03 -- 2008 NX, 2008 NU, 2008 MR1, 2008 MQ1, 2008 LW8, 2008 LV16, 2008 LQ16, 2008 KZ5, 2008 KD6, 2008 JZ7, 2008 JT35, 2008 JR26, 2008 JQ14, 2008 JF, 2008 HS3, 2008 HE66, 2008 EB32, 2007 WV4, 2007 LL, 2005 TU45, 2005 TJ174, 2005 RC34, 2004 NL8, 2003 XE11, 2002 WP11, 2001 XW266, 1999 SO5
J95Great Shefford Obs. in England, 1 in MPEC 2008-O03 -- 2005 RC34
442Gualba Obs. in Spain, 2 in MPEC 2008-O03 -- 137170, 8567
A17Guidestar Obs. in Germany, 1 in MPEC 2008-O03 -- 90403
J59Linceo Obs. in Spain, 1 in MPEC 2008-O03 -- 173689
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2008-O03 -- 2008 MQ1, 87311, 1917
118Modra Obs. in Slovakia, 1 in MPEC 2008-O03 -- 90403
A13Naef Obs. in Switzerland, 2 in MPEC 2008-O03 -- 2008 MU1, 162186
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2008-O03 -- 2003 OB4, 11398
661Rothney Astrophysical Obs. in Alberta, 1 in MPEC 2008-O03 -- 2004 TG10
E12Siding Spring Survey (SSS) in New South Wales, 8 in MPEC 2008-O03 -- 2008 NS1, 2008 NQ3, 2008 NP3, 2008 NO3, 2008 MU1, 2008 MN1, 2008 MH1, 2008 BT18
H67Stonegate Obs. in Michigan, 1 in MPEC 2008-O03 -- 35107
F85Tiki Obs. in Tahiti, 2 in MPEC 2008-O03 -- 2008 MZ, 2008 MR1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 July '08

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.
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.





Notes for Today's Latest Risk Assessments
2008 NQ3JPL Sentry1437R E M O V E DJPL: Risk listing removed at 0850 UTC.
2008 NO3JPL Sentry14372032-2105381.7e-07-3.42-4.000JPL: "Analysis based on 12 observations spanning 2.0506 days (2008-Jul-14.36382 to 2008-Jul-16.41445)." Diameter approximately 0.730 km. from mean, weighted H=18.3.
NEODyS14372032-2090241.19e-07-3.54-4.120NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2008/07/14.365 to 2008/07/16.415."

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 17 July '08

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

2329Grabbed MPEC 2008-O04 - Observable Comets - see above
Grabbed MPEC 2008-O05 - Distant Minor Planets - see above
Grabbed MPEC 2008-O06 - Atens and Apollos - see above
Grabbed MPEC 2008-O07 - Amors - see above
Grabbed MPEC 2008-O08 - Unusual Minor Planets - see above
Grabbed MPEC 2008-O09 - PHAs - see above
1437Noted that JPL Sentry has updated its 2008 NO3 risk assessment - see above
Noted that NEODyS has updated its 2008 NO3 risk assessment - see above
Noted that JPL Sentry has removed 2008 NQ3 as an impact risk - see above
Grabbed MPEC 2008-O03 - Daily Orbit Update - see above