Contents  on 12 June '08

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.

NEOCP Activity  on 12 June '08

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two updated listings. Both of these were "one nighters."

New MPECs  on 12 June '08

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 12 June '08 >>  MPEC 2008-L49 - "06:09 UT" - Daily Orbit Update

Observers  on 12 June '08

Ten observing facilities appear in today's MPEC.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2008-L49 -- 2007 LL
H55Astronomical Research Obs. (ARO) in Illinois, 13 in MPEC 2008-L49 -- 2008 LG2, 2008 KZ5, 2008 KW2, 2008 KV2, 2008 KN11, 2008 JZ7, 2008 JV19, 2008 JR14, 2008 JP14, 2008 JG, 2008 FW5, 2008 EQ7, 1999 GY5
J51Atlante Obs. in the Canary Islands, 3 in MPEC 2008-L49 -- 2008 JT35, 2000 AD205, 1980
703Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2008-L49 -- 2008 HS3, 2007 MK13, 85709, 35107, 184990, 1916
J95Great Shefford Obs. in England, 1 in MPEC 2008-L49 -- 2008 LW8
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-L49 -- 2006 OY10
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2008-L49 -- 2008 JT35, 2000 AD205, 137170
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-L49 -- 2008 KN11, 2004 TB18
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2008-L49 -- 2008 LA, 2008 KZ5, 2008 KV28
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-L49 -- 2003 OU
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 June '08

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.
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.
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
2008 LW8JPL Sentry1919R E M O V E DJPL: Risk listing removed at 0850 UTC.
2008 LG2NEODyS19242075-208964.83e-07-6.85-7.180NEODyS #2 for the day: "Based on 80 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/11.105."
JPL Sentry19192038-2105198.8e-06-5.56-6.050JPL: "Analysis based on 80 observations spanning 7.7873 days (2008-Jun-03.31737 to 2008-Jun-11.104715)." Diameter approximately 0.029 km. from mean, weighted H=25.4.
2008 LDNEODyS07592054-2090342.41e-05-6.81-7.460NEODyS: "Based on 27 optical observations (of which 1 are rejected as outliers) from 2008/06/02.292 to 2008/06/10.325."
2008 LANEODyS19232037-2088223.31e-05-3.75-4.130NEODyS: "Based on 53 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/11.233."
JPL Sentry19192027-2107223.3e-05-3.76-4.140JPL: "Analysis based on 53 observations spanning 10.063 days (2008-Jun-01.16922 to 2008-Jun-11.23216)." Diameter approximately 0.076 km. from mean, weighted H=23.2.
2008 KN11NEODyS19242037-204665.54e-07-5.18-5.490NEODyS: "Based on 90 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/11.409."
JPL Sentry19192037-204645.5e-07-5.19-5.530JPL: "Analysis based on 90 observations spanning 12.073 days (2008-May-30.33435 to 2008-Jun-11.40781)." Diameter approximately 0.077 km. from mean, weighted H=23.2.

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 12 June '08

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

1924Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
Noted that NEODyS has updated its 2008 LG2 risk assessment - see above
1923Noted that NEODyS has updated its 2008 LA risk assessment - see above
1919Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above
Noted that JPL Sentry has updated its 2008 LA risk assessment - see above
Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above
Noted that JPL Sentry has removed 2008 LW8 as an impact risk - see above
0759Noted that NEODyS has updated its 2008 LD risk assessment - see above
Noted that NEODyS has updated its 2008 LG2 risk assessment - see above
0757Grabbed MPEC 2008-L49 - Daily Orbit Update - see above