Contents  on 29 August '08

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 29 August '08

The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated

When last checked at 2316 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and one updated listing. Both of these were "one nighters."

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

New MPECs  on 29 August '08

Minor Planet Electronic Circulars

As of last check at 2316 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 29 Aug. '08 >>  MPEC 2008-Q54 - "06:07 UT" - Daily Orbit Update

Observers  on 29 August '08

Seventeen observing facilities appear in today's MPEC.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-Q54 -- 2008 QU3
H55Astronomical Research Obs. (ARO) in Illinois, 12 in MPEC 2008-Q54 -- 2008 QZ, 2008 QW11, 2008 QU3, 2008 QU11, 2008 QM2, 2008 QD1, 2008 OO, 2008 ON, 2008 NX, 2008 NU, 2008 MR1, 2008 JZ7
A88Bolzaneto Obs. in Italy, 1 in MPEC 2008-Q54 -- 4179
639Dresden Obs. in Germany, 1 in MPEC 2008-Q54 -- 90403
J27El Guijo Obs. in Spain, 1 in MPEC 2008-Q54 -- 1917
B23Fiamene Obs. in Italy, 4 in MPEC 2008-Q54 -- 2008 QT3, 2008 ON, 2005 TZ51, 65690
F84Hibiscus Obs. in Tahiti, 1 in MPEC 2008-Q54 -- 2008 QT11
J75La Sagra Obs. in Spain, 3 in MPEC 2008-Q54 -- 2003 RM, 138847, 11500
560Madonna di Dossobuono Obs. in Italy, 4 in MPEC 2008-Q54 -- 2008 QU3, 2008 QT3, 2008 OX2, 2008 ON
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-Q54 -- 2005 FH
474Mt. John Obs. in New Zealand, 5 in MPEC 2008-Q54 -- 2008 QT11, 2008 QS11, 2008 QC, 2006 WK3, 2005 YS165
A13Naef Obs. in Switzerland, 2 in MPEC 2008-Q54 -- 2003 RM, 65733
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2008-Q54 -- 87684, 66146, 53319, 1917
204Schiaparelli Obs. in Italy, 1 in MPEC 2008-Q54 -- 2008 QU11
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2008-Q54 -- 2008 BT18, 163014, 162510
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-Q54 -- 2008 QM2
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-Q54 -- 2001 LC
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 August '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2316 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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
2008 QT11JPL Sentry1452R E M O V E DJPL: Risk listing removed at 0851 UTC.
2008 QS11JPL Sentry14522011-21073048.6e-07-3.24-3.900JPL: "Analysis based on 18 observations spanning 1.0474 days (2008-Aug-27.63741 to 2008-Aug-28.68478)." Diameter approximately 0.390 km. from mean, weighted H=19.7.
NEODyS14522011-2089211.16e-07-4.26-4.970NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/08/27.638 to 2008/08/28.686."
2008 QT3JPL Sentry1452R E M O V E DJPL: Risk listing removed at 0851 UTC.
NEODyS1452R E M O V E D-
2008 OOJPL Sentry1452210012.4e-07-4.11-4.110JPL: "Analysis based on 102 observations spanning 32.061 days (2008-Jul-26.09211 to 2008-Aug-27.15357)." Diameter approximately 0.380 km. from mean, weighted H=19.7.

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 29 August '08

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

1452Noted that JPL Sentry has updated its 2008 OO risk assessment - see above
Noted that JPL Sentry has updated its 2008 QS11 risk assessment - see above
Noted that NEODyS has posted 2008 QS11 as an impact risk - see above
Noted that JPL Sentry has removed 2008 QT11 as an impact risk - see above
Noted that JPL Sentry has removed 2008 QT3 as an impact risk - see above
Noted that NEODyS has removed 2008 QT3 as an impact risk - see above
Grabbed MPEC 2008-Q54 - Daily Orbit Update - see above