Contents  on 13 March '09

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 13 March '09

Not active

The Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) was not active on this day.

New MPECs  on 13 March '09

Minor Planet Electronic Circulars

There were two MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-E63 - "22:15 UT" - Comets C/2008 X14, 2008 Y4, 2008 Y5, 2008 Y6, 2008 Y7, 2008 Y8, 2008 Y9 (SOHO)


<< DOU on 13 Mar. '09 >>  MPEC 2009-E62 - "06:07 UT" - Daily Orbit Update

Observers  on 13 March '09

Eight observing facilities appeared in this day's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 6 in MPEC 2009-E62 -- 2009 DZ42, 2009 DR3, 2009 CR4, 2009 CO5, 2009 BL2, 2008 YE29
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2009-E62 -- 2009 DR3, 2006 BC10
J131program code 1 via the Liverpool Telescope in the Canary Islands, 2 in MPEC 2009-E62 -- 2009 BA71, 2009 AF16
204Schiaparelli Obs. in Italy, 6 in MPEC 2009-E62 -- 2009 CW1, 2009 CS, 2008 TE157, 2008 RM98, 2006 BC10, 2005 NJ1
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 7 in MPEC 2009-E63 -- C/2008 Y9, C/2008 Y8, C/2008 Y7, C/2008 Y6, C/2008 Y5, C/2008 Y4, C/2008 X14
2493LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 3 in MPEC 2009-E63 -- C/2008 Y8, C/2008 Y7, C/2008 Y6
587Sormano Obs. in Italy, 2 in MPEC 2009-E62 -- 2009 EP2, 2009 DE47
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-E62 -- 2009 CW1
G56Walnut Creek Obs. in northern California, 1 in MPEC 2009-E62 -- 2009 DR3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 March '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2222 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. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few 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
2009 DZ42JPL Sentry1418R E M O V E DJPL: Risk listing removed at 0850 UTC.
NEODyS1418R E M O V E D-

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 March '09

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

0002 3/14Grabbed MPEC 2009-E63 - Comets C/2008 X14, 2008 Y4, 2008 Y5, 2008 Y6, 2008 Y7, 2008 Y8, 2008 Y9 (SOHO) - see above
1418Noted that JPL Sentry has removed 2009 DZ42 as an impact risk - see above
Noted that NEODyS has removed 2009 DZ42 as an impact risk - see above
Grabbed MPEC 2009-E62 - Daily Orbit Update - see above