Contents  on 3 June '10


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 3 June '10

The MPC's NEO Confirmation Page has 15 listings: 9 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had nine new and six updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of sixteen 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 3 June '10

Minor Planet Electronic Circulars

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

MPEC 2010-L11 - "20:25 UT" - 2010 LF

<< DOU on 3 June '10 >>  MPEC 2010-L10 - "06:08 UT" - Daily Orbit Update

Observers  on 3 June '10

Eleven observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPEC 2010-L10 -- 2010 JL33, 2010 JK41, 2010 JF, 2010 JE88, 2010 JE, 2010 GT7
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2010-L10 & 2010-L11 -- 2010 LF, 2010 CJ171, 2007 JZ20, 66400, 52750, 20790, 152671, 6050
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-L10 -- 2009 KD5
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 3 in MPEC 2010-L10 -- 2010 KR10, 2010 KQ, 2010 JO71
J95Great Shefford Obs. in England, 4 in MPECs 2010-L10 & 2010-L11 -- 2010 LF, 2010 KD, 2010 JG87, 1999 MN
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-L11 -- 2010 LF
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2010-L11 -- 2010 LF
H36Sandlot Obs. in Kansas, 1 in MPEC 2010-L11 -- 2010 LF
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2010-L10 -- 2010 KP10, 2010 KB61, 2010 JV153, 2010 JE
926Tenagra II Obs. in Arizona, 1 in MPEC 2010-L11 -- 2010 LF
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-L11 -- 2010 LF
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 June '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.





Notes for Today's Latest Risk Assessments
2010 KR10JPL Sentry1439R E M O V E DJPL: Risk listing removed at 0952 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.

Chronology  on 3 June '10

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

2134Grabbed MPEC 2010-L11 - 2010 LF - see above
1439Noted that JPL Sentry has removed 2010 KR10 as an impact risk - see above
Grabbed MPEC 2010-L10 - Daily Orbit Update - see above