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Contents  on 12 June '10

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 12 June '10

The MPC's NEO Confirmation Page has 11 listings: 3 new, 8 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and eight updated listings. Of these, four 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.

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New MPECs  on 12 June '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 12 June '10 >>  MPEC 2010-L61 - "06:09 UT" - Daily Orbit Update

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Observers  on 12 June '10

Fourteen observing facilities appear in today's MPEC.

CodeObserver / observatory
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2010-L61 -- 2009 KD5, 1999 MN
B09Capannoli Obs. in Italy, 1 in MPEC 2010-L61 -- 237442
160Castelmartini Obs. in Italy, 2 in MPEC 2010-L61 -- 2010 GA34, 85989
703Catalina Sky Survey (CSS) in Arizona, 5 in MPEC 2010-L61 -- 96590, 36183, 161989, 5143, 3671
J95Great Shefford Obs. in England, 2 in MPEC 2010-L61 -- 2010 LM34, 2010 LL34
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPEC 2010-L61 -- 2010 LM34, 2010 LL34, 2010 LK34, 2010 LE15
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-L61 -- 2010 FH81
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2010-L61 -- 2010 JL33, 18109
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-L61 -- 17188
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2010-L61 -- 2010 LM34, 2010 LJ14, 2010 KP10, 2010 KD, 2010 GW62, 2010 GR75, 2010 FQ
926Tenagra II Obs. in Arizona, 2 in MPEC 2010-L61 -- 2010 LG14, 2010 KR10
H10Tzec Maun Obs. Mayhill in New Mexico, 3 in MPEC 2010-L61 -- 2010 LM34, 2010 EV45, 2009 KD5
C51WISE in Earth polar orbit, 8 in MPEC 2010-L61 -- 2010 LQ33, 2010 LE15, 2010 KK127, 2010 HC, 2010 GV147, 2007 HX4, 2005 GB120, 2000 CO101
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2010-L61 -- 2010 LM34, 2010 CL18, 161998
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 12 June '10

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.
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.
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
2010 LM34NEODyS1439R E M O V E D-
JPL Sentry1439R E M O V E DJPL: Risk listing removed at 0949 UTC.
2010 LL34JPL Sentry14392020-2102363.4e-08-3.99-4.490JPL: "Analysis based on 35 observations spanning 2.6608 days (2010-Jun-09.40204 to 2010-Jun-12.06282)." Diameter approximately 0.501 km. from mean, weighted H=19.1.
NEODyS14392020-2089663.77e-08-3.94-4.450NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2010/06/09.403 to 2010/06/12.064."

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 12 June '10

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

1439Noted that JPL Sentry has updated its 2010 LL34 risk assessment - see above
Noted that NEODyS has updated its 2010 LL34 risk assessment - see above
Noted that JPL Sentry has removed 2010 LM34 as an impact risk - see above
Noted that NEODyS has removed 2010 LM34 as an impact risk - see above
Grabbed MPEC 2010-L61 - Daily Orbit Update - see above