Contents  on 21 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 21 June '08

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (last checked at 2357 UTC).

New MPECs  on 21 June '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 21 June '08 >>  MPEC 2008-M22 - "06:05 UT" - Daily Orbit Update

Observers  on 21 June '08

Eight observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 12 in MPEC 2008-M22 -- 2008 LW8, 2008 LG2, 2008 KW2, 2008 KD6, 2008 JT35, 2008 JR26, 2008 JP14, 2008 HS3, 2008 HE66, 2008 GX, 2007 XH16, 2003 BT35
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2008-M22 -- 2008 JT35, 2007 LL
448Desert Moon Obs. in New Mexico, 3 in MPEC 2008-M22 -- 2008 KD6, 2008 JO24, 2002 MQ3
B19Iluro Obs. in Spain, 2 in MPEC 2008-M22 -- 7482, 1917
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2008-M22 -- 2008 LV16
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-M22 -- 2007 LL, 2005 TU45
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2008-M22 -- 2005 GP21
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-M22 -- 2008 EJ1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 June '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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 LV16NEODyS13492022-2089195.26e-07-3.56-4.190NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2008/06/15.381 to 2008/06/19.362."
JPL Sentry13482021-2081144.2e-07-3.60-4.080JPL: "Analysis based on 37 observations spanning 3.9814 days (2008-Jun-15.3798 to 2008-Jun-19.36118)." Diameter approximately 0.348 km. from mean, weighted H=19.9.
2008 LG2NEODyS13492058-2089132.78e-06-6.01-6.260NEODyS: "Based on 106 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/19.135."
JPL Sentry13482058-2108146.9e-06-5.67-6.250JPL: "Analysis based on 106 observations spanning 15.817 days (2008-Jun-03.31737 to 2008-Jun-19.134528)." Diameter approximately 0.030 km. from mean, weighted H=25.2.

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 21 June '08

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

1349Noted that NEODyS has updated its 2008 LG2 risk assessment - see above
Noted that NEODyS has updated its 2008 LV16 risk assessment - see above
1348Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above
Noted that JPL Sentry has updated its 2008 LV16 risk assessment - see above
Grabbed MPEC 2008-M22 - Daily Orbit Update - see above