Contents  on 24 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 24 August '09

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 1909 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter." So far The Tracking News has counted a total of four 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 24 August '09

Minor Planet Electronic Circulars

As of last check at 1909 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 24 Aug. '09 >>  MPEC 2009-Q53 - "06:07 UT" - Daily Orbit Update

MPEC 2009-Q52 - "03:21 UT" - 2009 QC23

Observers  on 24 August '09

A total of 26 observing facilities appear in today's MPECs.

CodeObserver / observatory
E18BDI Obs. in New South Wales, 1 in MPEC 2009-Q53 -- 2009 QL8
B88Bigmuskie Obs. in Italy, 1 in MPEC 2009-Q53 -- 2009 QK9
176Consell Obs. in Spain, 4 in MPECs 2009-Q52 & 2009-Q53 -- 2009 QL8, 2009 QK9, 2009 QJ9, 2009 QC23
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2009-Q52 -- 2009 QC23
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2009-Q53 -- 2009 QJ9, 2009 OG
113Drebach Obs. in Germany, 1 in MPEC 2009-Q52 -- 2009 QC23
I21El Condor Obs. in Argentina, 7 in MPEC 2009-Q53 -- 2009 MC9, 2009 HV77, 2002 LV, 2000 XK44, 2000 CO101, 143651, 5626
151Eschenberg Obs. in Switzerland, 3 in MPEC 2009-Q53 -- 2009 QK9, 2009 QJ9, 2009 MC9
F657Paul Roche in Wales via Faulkes Telescope North in Hawaii, 1 in MPEC 2009-Q53 -- 1990 HA
J95Great Shefford Obs. in England, 2 in MPECs 2009-Q52 & 2009-Q53 -- 2009 QJ9, 2009 QC23
A17Guidestar Obs. in Germany, 2 in MPEC 2009-Q53 -- 2009 QZ6, 2009 QK9
F84Hibiscus Obs. in Tahiti, 1 in MPEC 2009-Q52 -- 2009 QC23
J28Jaen Obs. in Spain, 1 in MPEC 2009-Q52 -- 2009 QC23
844Los Molinos Obs. in Uruguay, 2 in MPEC 2009-Q53 -- 4183, 3552
952Marxuquera Obs. in Spain, 1 in MPEC 2009-Q52 -- 2009 QC23
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 14 in MPEC 2009-Q53 -- 2009 QK9, 2009 QK2, 2009 OZ7, 2009 OC, 2009 NH, 2009 NE, 2009 NA, 2009 ML1, 2009 LX, 2009 KL2, 2009 JK1, 2009 HB82, 2002 NW16, 2002 NP1
I20Rio Cuarto Obs. in Argentina, 3 in MPEC 2009-Q53 -- 2005 TE15, 2004 RU10, 2002 RQ25
H36Sandlot Obs. in Kansas, 1 in MPEC 2009-Q52 -- 2009 QC23
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2009-Q53 -- 2009 QW1, 2009 QJ2, 2009 PY
510Siegen Obs. in Germany, 3 in MPEC 2009-Q53 -- 2009 QJ9, 2002 NP1, 433
A78Stia Obs. in Italy, 2 in MPEC 2009-Q53 -- 2009 LX, 54401
I19Tanti Obs. in Argentina, 2 in MPEC 2009-Q53 -- 2002 RQ25, 2000 CO101
B01Taunus Obs. in Germany, 1 in MPEC 2009-Q53 -- 2009 QQ8
H53Thompsonville Obs. in Illinois, 6 in MPEC 2009-Q53 -- 2009 OG, 2009 NE, 2009 MX6, 217390, 5626, 2100
C00Velikie Luki Obs., 2 in MPEC 2009-Q53 -- 16834, 3200
A48Verona Obs. in Italy, 2 in MPEC 2009-Q53 -- 2009 QJ9, 2009 NE
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 August '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 1909 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 QL8NEODyS1325R E M O V E D-
JPL Sentry1325R E M O V E DJPL: Risk listing removed at 0850 UTC.

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 24 August '09

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

1325Noted that JPL Sentry has removed 2009 QL8 as an impact risk - see above
Noted that NEODyS has removed 2009 QL8 as an impact risk - see above
Grabbed MPEC 2009-Q53 - Daily Orbit Update - see above
0447Grabbed MPEC 2009-Q52 - 2009 QC23 - see above