Contents  on 28 August '09


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 28 August '09

The MPC's NEO Confirmation Page has 8 listings: 3 new, 5 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and five updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of seventeen 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 28 August '09

Minor Planet Electronic Circulars

As of last check at 2341 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2009-Q64 - "21:27 UT" - 2009 QH34

MPEC 2009-Q63 - "21:05 UT" - 2009 QG34

MPEC 2009-Q62 - "20:57 UT" - 2009 QF34

MPEC 2009-Q61 - "20:54 UT" - 2009 QE34

MPEC 2009-Q60 - "20:49 UT" - 2009 QD34

<< DOU on 28 Aug. '09 >>  MPEC 2009-Q59 - "06:08 UT" - Daily Orbit Update

Observers  on 28 August '09

A total of 25 observing facilities appear in today's MPECs.

CodeObserver / observatory
J51Atlante Obs. in the Canary Islands, 4 in MPEC 2009-Q59 -- 2009 QJ9, 2009 NH, 2009 MC9, 2002 NP1
B88Bigmuskie Obs. in Italy, 4 in MPEC 2009-Q59 -- 2009 QJ9, 2009 OC, 2009 LX, 2005 MC
J05Bootes Obs., 2 in MPEC 2009-Q59 -- 2002 NP1, 17274
703Catalina Sky Survey (CSS) in Arizona, 11 in MPECs 2009-Q59, 2009-Q60, 2009-Q61, 2009-Q63 & 2009-Q64 -- 2009 QQ8, 2009 QH34, 2009 QG34, 2009 QE8, 2009 QE34, 2009 QD34, 2009 QC, 2009 OC, 2005 YX128, 52750, 5645
I21El Condor Obs. in Argentina, 1 in MPEC 2009-Q59 -- 2009 NH
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-Q64 -- 2009 QH34
F655program code 5 via Faulkes Telescope North in Hawaii, 1 in MPEC 2009-Q59 -- 2009 QL2
J95Great Shefford Obs. in England, 3 in MPECs 2009-Q59, 2009-Q63 & 2009-Q64 -- 2009 QK9, 2009 QH34, 2009 QG34
A17Guidestar Obs. in Germany, 1 in MPEC 2009-Q64 -- 2009 QH34
704LINEAR in New Mexico, 3 in MPEC 2009-Q59 -- 2009 QH2, 138925, 8035
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-Q59 -- 2009 QC
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2009-Q59 -- 2009 QJ9, 2009 NE, 2009 NA, 2002 NW16, 2002 NP1
H06*Rolando Ligustri in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-Q60 -- 2009 QD34
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-Q64 -- 2009 QH34
H36Sandlot Obs. in Kansas, 2 in MPECs 2009-Q62 & 2009-Q64 -- 2009 QH34, 2009 QF34
204Schiaparelli Obs. in Italy, 1 in MPEC 2009-Q64 -- 2009 QH34
D21Shenton Park Obs. in Western Australia, 2 in MPECs 2009-Q60 & 2009-Q61 -- 2009 QE34, 2009 QD34
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2009-Q59 & 2009-Q62 -- 2009 QF34, 2002 BP26, 2001 HZ7, 143409
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2009-Q59 & 2009-Q62 -- 2009 QS, 2009 QM5, 2009 QF34, 2009 QE8, 2009 QC, 2009 PT2, 2009 PH, 2006 QQ23
B01Taunus Obs. in Germany, 1 in MPEC 2009-Q59 -- 2006 WO127
H53Thompsonville Obs. in Illinois, 5 in MPEC 2009-Q59 -- 2009 OG, 2009 NE, 217390, 17274, 5626
A48Verona Obs. in Italy, 2 in MPEC 2009-Q59 -- 2009 QK9, 2009 QJ9
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2009-Q59 -- 138883, 5626
G56Walnut Creek Obs. in northern California, 1 in MPEC 2009-Q59 -- 2009 QO
D20Zadko Obs. in Western Australia, 4 in MPEC 2009-Q59 -- 2009 QW1, 2009 QO8, 2009 QL8, 2009 QJ2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 August '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2341 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.





Notes for Today's Latest Risk Assessments
2009 QF34JPL Sentry23222014-2103819.1e-08-5.55-6.340JPL: "Analysis based on 11 observations spanning .99342 days (2009-Aug-27.39649 to 2009-Aug-28.38991)." Diameter approximately 0.110 km. from mean, weighted H=22.5.

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 28 August '09

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

2322Noted that JPL Sentry has posted 2009 QF34 as an impact risk - see above
2136Grabbed MPEC 2009-Q63 - 2009 QG34 - see above
Grabbed MPEC 2009-Q64 - 2009 QH34 - see above
2105Grabbed MPEC 2009-Q60 - 2009 QD34 - see above
Grabbed MPEC 2009-Q61 - 2009 QE34 - see above
Grabbed MPEC 2009-Q62 - 2009 QF34 - see above
1309Grabbed MPEC 2009-Q59 - Daily Orbit Update - see above