Contents  on 13 June '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 13 June '08

The MPC's NEO Confirmation Page has 3 listings: 3 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three updated listings. Of these, one was a "one nighter."

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 13 June '08

Minor Planet Electronic Circulars

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

MPEC 2008-L51 - "23:21 UT" - 2006 HP122

<< DOU on 13 June '08 >>  MPEC 2008-L50 - "06:09 UT" - Daily Orbit Update

Observers  on 13 June '08

Eleven observing facilities appear in today's MPECs.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2008-L50 -- 7889
J51Atlante Obs. in the Canary Islands, 3 in MPEC 2008-L50 -- 2005 TU45, 35107, 7889
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2008-L50 -- 2002 JC, 7482
807Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2008-L51 -- 2006 HP122
J27El Guijo Obs. in Spain, 3 in MPEC 2008-L50 -- 2005 TU45, 2000 AD205, 35107
F656program code 6 via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-L50 -- 2008 LC
704LINEAR in New Mexico, 3 in MPEC 2008-L50 -- 2005 TU45, 2003 GW, 35107
304Las Campanas Obs. in Chile, 1 in MPEC 2008-L51 -- 2006 HP122
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 8 in MPEC 2008-L50 -- 2008 LH2, 2008 JT35, 2008 HS3, 2007 LL, 2005 VT5, 2005 TU45, 2005 NB7, 2000 AD205
291Spacewatch 1.8m telescope in Arizona, 9 in MPEC 2008-L50 -- 2008 LG2, 2008 LC, 2008 KZ5, 2008 KV28, 2008 KQ, 2008 KN11, 2007 FD, 2006 SZ217, 2004 JW20
F85Tiki Obs. in Tahiti, 2 in MPEC 2008-L50 -- 2006 HR29, 2006 DP14
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 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.





Notes for Today's Latest Risk Assessments
2008 LG2JPL Sentry13152038-2105187.8e-06-5.60-6.040JPL: "Analysis based on 83 observations spanning 8.8508 days (2008-Jun-03.31737 to 2008-Jun-12.16813)." Diameter approximately 0.028 km. from mean, weighted H=25.4.
NEODyS13152055-2087144.91e-06-5.84-6.370NEODyS: "Based on 83 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/12.169."
2008 KN11JPL Sentry13152037-204645.2e-07-5.22-5.570JPL: "Analysis based on 93 observations spanning 12.950 days (2008-May-30.33435 to 2008-Jun-12.28483)." Diameter approximately 0.076 km. from mean, weighted H=23.3.
NEODyS13152030-204665.0e-07-5.23-5.530NEODyS: "Based on 93 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/12.286."

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 '08

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

2358Grabbed MPEC 2008-L51 - 2006 HP122 - see above
1315Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above
Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above
Noted that NEODyS has updated its 2008 LG2 risk assessment - see above
Grabbed MPEC 2008-L50 - Daily Orbit Update - see above