Contents  on 9 July '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 9 July '09

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 (checked at 2358 UTC). It was last noted active on July 5th.

New MPECs  on 9 July '09

Minor Planet Electronic Circulars

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


MPEC 2009-N30 - "22:55 UT" - Comets C/2009 G2, 2009 G3, 2009 G4, 2009 G5, 2009 G6 (SOHO)


MPEC 2009-N29 - "22:50 UT" - Comets C/2009 E5, 2009 F8, 2009 F9, 2009 F10 (SOHO)


<< DOU on 9 July '09 >>  MPEC 2009-N28 - "06:06 UT" - Daily Orbit Update

Observers  on 9 July '09

Twelve observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 3 in MPEC 2009-N28 -- 2009 KM7, 2009 KD5, 137671
B88Bigmuskie Obs. in Italy, 2 in MPEC 2009-N28 -- 2009 NE, 2009 KL2
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2009-N28 -- 2009 NE
I21El Condor Obs. in Argentina, 5 in MPEC 2009-N28 -- 2009 MC9, 2001 FE90, 52768, 17274, 3552
E16Grove Creek Obs. in New South Wales, 2 in MPEC 2009-N28 -- 2009 MC9, 2009 KC3
699LONEOS in Arizona, 1 in MPEC 2009-N28 -- 2009 KM7
I36Los Campitos Obs. in Argentina, 2 in MPEC 2009-N28 -- 2009 MC9, 2009 KD5
560Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2009-N28 -- 2009 NE, 2009 KL2, 2002 LV
A13Naef Obs. in Switzerland, 2 in MPEC 2009-N28 -- 2009 KC7, 154244
I20Rio Cuarto Obs. in Argentina, 3 in MPEC 2009-N28 -- 2009 MB9, 2009 KC3, 3552
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2009-N28 -- 6053, 3552
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 9 in MPECs 2009-N29 & 2009-N30 -- C/2009 G6, C/2009 G5, C/2009 G4, C/2009 G3, C/2009 G2, C/2009 F9, C/2009 F8, C/2009 F10, C/2009 E5
2493LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 3 in MPECs 2009-N29 & 2009-N30 -- C/2009 G3, C/2009 F9, C/2009 F8
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 July '09

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.
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 MB9JPL Sentry1402203711.7e-08-4.53-4.530JPL: "Analysis based on 24 observations spanning 9.6712 days (2009-Jun-29.47208 to 2009-Jul-09.14333)." Diameter approximately 0.620 km. from mean, weighted H=18.7.
NEODyS1402203711.84e-08-4.28-4.280NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2009/06/29.473 to 2009/07/09.144."

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 9 July '09

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

2302Grabbed MPEC 2009-N29 - Comets C/2009 E5, 2009 F8, 2009 F9, 2009 F10 (SOHO) - see above
Grabbed MPEC 2009-N30 - Comets C/2009 G2, 2009 G3, 2009 G4, 2009 G5, 2009 G6 (SOHO) - see above
1402Noted that JPL Sentry has updated its 2009 MB9 risk assessment - see above
Noted that NEODyS has updated its 2009 MB9 risk assessment - see above
Grabbed MPEC 2009-N28 - Daily Orbit Update - see above