Contents  on 13 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 13 June '10

The MPC's NEO Confirmation Page has 7 listings: 1 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and six updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of thirteen 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 13 June '10

Minor Planet Electronic Circulars

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

MPEC 2010-L66 - "23:41 UT" - 2010 JL33

MPEC 2010-L65 - "19:14 UT" - 2010 LK61

MPEC 2010-L64 - "19:10 UT" - 2010 LJ61

MPEC 2010-L63 - "14:51 UT" - 2010 LG61

<< DOU on 13 June '10 >>  MPEC 2010-L62 - "06:09 UT" - Daily Orbit Update

Observers  on 13 June '10

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2010-L65 -- 2010 LK61
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2010-L62 -- 2010 CJ171, 66272, 54789
G58Chabot Obs. in northern California, 1 in MPEC 2010-L65 -- 2010 LK61
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-L62 -- 2010 LG14, 2010 JV153, 161998
J95Great Shefford Obs. in England, 1 in MPEC 2010-L65 -- 2010 LK61
585Kiev Comet Station in the Ukraine, 1 in MPEC 2010-L62 -- 85818
704LINEAR in New Mexico, 6 in MPEC 2010-L62 -- 2007 VG189, 2003 MJ4, 2002 XH4, 1998 XM2, 85628, 241370
H01Magdalena Ridge Obs. (MRO) in New Mexico, 6 in MPECs 2010-L62 & 2010-L65 -- 2010 LM34, 2010 LL34, 2010 LK61, 2010 KQ10, 2005 VC, 2000 EK26
A06Mataro Obs. in Spain, 1 in MPEC 2010-L62 -- 12923
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2010-L62 -- 2010 FJ81, 2010 FH81
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2010-L62, 2010-L64 & 2010-L65 -- 2010 LK61, 2010 LJ61, 2003 NZ6
566NEAT's GEODSS Haleakala telescope in Hawaii, 1 in MPEC 2010-L66 -- 2010 JL33
473Remanzacco Obs. in Italy, 1 in MPEC 2010-L65 -- 2010 LK61
H36Sandlot Obs. in Kansas, 1 in MPEC 2010-L65 -- 2010 LK61
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2010-L62 -- 2003 KQ18, 18109, 152637, 1685
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2010-L62 & 2010-L64 -- 2010 LL34, 2010 LJ61, 2010 LJ14, 2010 LE15, 2010 KR10, 2010 GX62, 2010 CH18
926Tenagra II Obs. in Arizona, 4 in MPEC 2010-L62 -- 2010 LN14, 2010 LM34, 2010 LL34, 2010 LK34
H10Tzec Maun Obs. Mayhill in New Mexico, 4 in MPEC 2010-L62 -- 2009 KD5, 241370, 237442, 4055
C51WISE in Earth polar orbit, 2 in MPECs 2010-L63 & 2010-L64 -- 2010 LJ61, 2010 LG61
G56Walnut Creek Obs. in northern California, 2 in MPEC 2010-L62 -- 2010 LM34, 2010 LK34
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 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 LJ61JPL Sentry20592041-208536.6e-09-5.76-5.980JPL: "Analysis based on 16 observations spanning 5.1800 days (2010-Jun-08.0258 to 2010-Jun-13.20575)." Diameter approximately 0.290 km. from mean, weighted H=20.3.
2010 LG61JPL Sentry19042036-209091.1e-08-8.88-9.660JPL: "Analysis based on 7 observations spanning .52909 days (2010-Jun-02.69239 to 2010-Jun-03.22148)." Diameter approximately 0.016 km. from mean, weighted H=26.7.
2010 LL34JPL Sentry15302020-2109231.7e-08-4.26-4.620JPL: "Analysis based on 43 observations spanning 3.0513 days (2010-Jun-09.40204 to 2010-Jun-12.45337)." Diameter approximately 0.500 km. from mean, weighted H=19.2.
NEODyS15302020-2089532.09e-08-4.18-4.560NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2010/06/09.403 to 2010/06/12.454."

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 13 June '10

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

2358Grabbed MPEC 2010-L66 - 2010 JL33 - see above
2059Noted that JPL Sentry has posted 2010 LJ61 as an impact risk - see above
2000Grabbed MPEC 2010-L64 - 2010 LJ61 - see above
Grabbed MPEC 2010-L65 - 2010 LK61 - see above
1904Noted that JPL Sentry has posted 2010 LG61 as an impact risk - see above
1530Noted that JPL Sentry has updated its 2010 LL34 risk assessment - see above
Noted that NEODyS has updated its 2010 LL34 risk assessment - see above
Grabbed MPEC 2010-L62 - Daily Orbit Update - see above
Grabbed MPEC 2010-L63 - 2010 LG61 - see above