Contents  on 30 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 30 July '09

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

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of eight listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 30 July '09

Minor Planet Electronic Circulars

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


MPEC 2009-O54 - "17:32 UT" - Comet C/2009 O3 (Hill)


MPEC 2009-O53 - "16:56 UT" - Comet C/2009 O2 (Catalina)


MPEC 2009-O52 - "12:18 UT" - 2009 OP9


MPEC 2009-O51 - "12:14 UT" - 2009 OO9


<< DOU on 30 July '09 >>  MPEC 2009-O50 - "06:08 UT" - Daily Orbit Update

Observers  on 30 July '09

A total of 28 observing facilities appear in today's MPECs.

CodeObserver / observatory
I08Alianza S4 Obs. in Argentina, 1 in MPEC 2009-O51 -- 2009 OO9
H55Astronomical Research Obs. (ARO) in Illinois, 9 in MPECs 2009-O50, 2009-O53 & 2009-O54 -- 2009 OS5, 2009 OC3, C/2009 O3, C/2009 O2, 2009 NL, 2009 NH, 2009 MN8, 2009 KC7, 2009 CC3
B75Betelgeuse Station in Italy, 5 in MPEC 2009-O50 -- 2002 LV, 215442, 163758, 162483, 15745
160Castelmartini Obs. in Italy, 4 in MPECs 2009-O50, 2009-O53 & 2009-O54 -- C/2009 O3, C/2009 O2, 162483, 15745
703Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2009-O50, 2009-O52, 2009-O53 & 2009-O54 -- 2009 OP9, C/2009 O3, C/2009 O2, 2009 NL, 2005 PJ2, 2001 LC, 17274
I21El Condor Obs. in Argentina, 4 in MPEC 2009-O50 -- 2009 OX5, 2009 OG, 2002 LV, 143651
151Eschenberg Obs. in Switzerland, 1 in MPEC 2009-O50 -- 2002 LV
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-O53 -- C/2009 O2
J95Great Shefford Obs. in England, 5 in MPECs 2009-O50, 2009-O51, 2009-O52, 2009-O53 & 2009-O54 -- 2009 OW6, 2009 OP9, 2009 OO9, C/2009 O3, C/2009 O2
A17Guidestar Obs. in Germany, 1 in MPEC 2009-O53 -- C/2009 O2
704LINEAR in New Mexico, 1 in MPEC 2009-O50 -- 159399
560Madonna di Dossobuono Obs. in Italy, 4 in MPEC 2009-O50 -- 2009 OF, 2002 LV, 2000 TO64, 2000 OB22
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2009-O51, 2009-O52, 2009-O53 & 2009-O54 -- 2009 OP9, 2009 OO9, C/2009 O3, C/2009 O2
B28Mandi Obs. in Italy, 1 in MPEC 2009-O53 -- C/2009 O2
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-O50 -- 2009 OC
B49Paus Obs. in Spain, 1 in MPEC 2009-O50 -- 2009 OZ4
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-O54 -- C/2009 O3
854Sabino Canyon Obs. in Arizona, 4 in MPECs 2009-O51, 2009-O52, 2009-O53 & 2009-O54 -- 2009 OP9, 2009 OO9, C/2009 O3, C/2009 O2
H36Sandlot Obs. in Kansas, 1 in MPEC 2009-O53 -- C/2009 O2
204Schiaparelli Obs. in Italy, 7 in MPECs 2009-O50, 2009-O52, 2009-O53 & 2009-O54 -- 2009 OZ4, 2009 OX5, 2009 OW6, 2009 OP9, C/2009 O3, C/2009 O2, 2009 ML1
E12Siding Spring Survey in New South Wales, 1 in MPEC 2009-O50 -- 2009 OB3
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-O50 -- 2000 OB22
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2009-O50, 2009-O52 & 2009-O53 -- 2009 OX5, 2009 OP9, C/2009 O2, 2009 MS, 2006 KD1, 2006 CE, 2003 TK
A71Stixendorf Obs. in Austria, 1 in MPEC 2009-O50 -- 4015
673Table Mtn. Obs. in southern California, 1 in MPEC 2009-O53 -- C/2009 O2
H10Tzec Maun Obs. Mayhill in New Mexico, 2 in MPECs 2009-O53 & 2009-O54 -- C/2009 O3, C/2009 O2
198Wildberg Obs. in Germany, 1 in MPEC 2009-O53 -- C/2009 O2
A79Zvezdno Obshtestvo Obs. in Bulgaria, 2 in MPECs 2009-O52 & 2009-O54 -- 2009 OP9, C/2009 O3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 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 OW6NEODyS14012074-208038.79e-06-5.46-5.570NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2009/07/27.361 to 2009/07/30.016."
JPL Sentry14002074-208028.7e-06-5.46-5.560JPL: "Analysis based on 31 observations spanning 2.6542 days (2009-Jul-27.36058 to 2009-Jul-30.014752)." Diameter approximately 0.031 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 30 July '09

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

1914Grabbed MPEC 2009-O53 - Comet C/2009 O2 (Catalina) - see above
Grabbed MPEC 2009-O54 - Comet C/2009 O3 (Hill) - see above
1401Grabbed MPEC 2009-O50 - Daily Orbit Update - see above
Grabbed MPEC 2009-O51 - 2009 OO9 - see above
Grabbed MPEC 2009-O52 - 2009 OP9 - see above
1400Noted that JPL Sentry has updated its 2009 OW6 risk assessment - see above
Noted that NEODyS has posted 2009 OW6 as an impact risk - see above