Contents  on 27 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 27 July '08

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. 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.

New MPECs  on 27 July '08

Minor Planet Electronic Circulars

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

MPEC 2008-O35 - "16:16 UT" - 2006 AL3

<< DOU on 27 July '08 >>  MPEC 2008-O34 - "06:07 UT" - Daily Orbit Update

MPEC 2008-O33 - "04:02 UT" - 2008 OO

MPEC 2008-O32 - "03:59 UT" - 2008 ON

MPEC 2008-O31 - "03:56 UT" - 2008 OM

Observers  on 27 July '08

A total of 20 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 7 in MPECs 2008-O31, 2008-O34 & 2008-O35 -- 2008 OM, 2008 NX, 2008 NU, 2008 MR1, 2008 MQ1, 2008 JT35, 2006 AL3
A81Balzaretto Obs. in Italy, 3 in MPEC 2008-O34 -- 2008 MU1, 90403, 35107
J27El Guijo Obs. in Spain, 1 in MPEC 2008-O34 -- 2005 RC34
808El Leoncito Obs. in Argentina, 9 in MPEC 2008-O34 -- 2005 TU45, 2002 WP11, 88254, 39572, 189062, 188452, 102873, 7092, 3691
151Eschenberg Obs. in Switzerland, 1 in MPEC 2008-O31 -- 2008 OM
A17Guidestar Obs. in Germany, 1 in MPEC 2008-O31 -- 2008 OM
B15Inastars Obs. in Germany, 2 in MPEC 2008-O34 -- 2004 LV3, 65690
J66Kinver Obs. in England, 3 in MPECs 2008-O33 & 2008-O34 -- 2008 OO, 2008 NU, 2008 MU1
J87La Canada Obs. in Spain, 2 in MPECs 2008-O31 & 2008-O33 -- 2008 OO, 2008 OM
J75La Sagra Obs. in Spain, 1 in MPEC 2008-O33 -- 2008 OO
620Mallorca Obs. on Mallorca, 2 in MPECs 2008-O31 & 2008-O33 -- 2008 OO, 2008 OM
118Modra Obs. in Slovakia, 1 in MPEC 2008-O31 -- 2008 OM
900Moriyama Obs. in Japan, 1 in MPEC 2008-O33 -- 2008 OO
474Mt. John Obs. in New Zealand, 1 in MPEC 2008-O35 -- 2006 AL3
B38Santa Mama Obs. in Italy, 2 in MPEC 2008-O34 -- 90403, 65690
204Schiaparelli Obs. in Italy, 2 in MPEC 2008-O34 -- 2005 RC34, 90403
E12Siding Spring Survey (SSS) in New South Wales, 7 in MPECs 2008-O31, 2008-O32, 2008-O33 & 2008-O34 -- 2008 OO, 2008 ON, 2008 OM, 2008 MR1, 2005 MB, 39572, 1685
B40Skylive Obs. in Italy, 1 in MPEC 2008-O33 -- 2008 OO
B42Vitebsk Obs. in Belarus, 1 in MPEC 2008-O34 -- 90403
A60YSTAR-NEOPAT Sutherland in South Africa, 1 in MPEC 2008-O34 -- 4179
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 July '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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 OONEODyS14552037-2090936.01e-07-3.44-3.870NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2008/07/26.093 to 2008/07/27.031."
JPL Sentry06232037-21081395.6e-07-3.52-4.410JPL: "Analysis based on 30 observations spanning .93830 days (2008-Jul-26.09211 to 2008-Jul-27.03041)." Diameter approximately 0.433 km. from mean, weighted H=19.5.

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 27 July '08

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

1700Grabbed MPEC 2008-O35 - 2006 AL3 - see above
1455Noted that NEODyS has posted 2008 OO as an impact risk - see above
Grabbed MPEC 2008-O34 - Daily Orbit Update - see above
0623Noted that JPL Sentry has posted 2008 OO as an impact risk - see above
0438Grabbed MPEC 2008-O31 - 2008 OM - see above
Grabbed MPEC 2008-O32 - 2008 ON - see above
Grabbed MPEC 2008-O33 - 2008 OO - see above