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Contents  on 30 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.

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NEOCP Activity  on 30 August '08

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

When last checked at 2357 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.

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New MPECs  on 30 August '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-Q56 - "19:53 UT" - 2006 XA


<< DOU on 30 Aug. '08 >>  MPEC 2008-Q55 - "06:07 UT" - Daily Orbit Update

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Observers  on 30 August '08

Twelve observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 16 in MPECs 2008-Q55 & 2008-Q56 -- 2008 QZ, 2008 QY, 2008 QU3, 2008 QT3, 2008 QC1, 2008 QA1, 2008 PJ9, 2008 PE1, 2008 OV2, 2008 OS7, 2008 NB, 2008 MU1, 2008 MR1, 2006 XA, 2003 SG170, 1998 SO
J51Atlante Obs. in the Canary Islands, 4 in MPEC 2008-Q55 -- 164400, 8567, 3352, 1980
B09Capannoli Obs. in Italy, 1 in MPEC 2008-Q55 -- 2005 TZ51
151Eschenberg Obs. in Switzerland, 3 in MPEC 2008-Q55 -- 2008 QT3, 2005 TZ51, 2003 RM
A17Guidestar Obs. in Germany, 2 in MPEC 2008-Q55 -- 2008 QA1, 2007 YO56
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-Q55 -- 2005 PO
152Moletai Obs. in Lithuania, 1 in MPEC 2008-Q55 -- 2008 OS9
B49Paus Obs. in Spain, 3 in MPEC 2008-Q55 -- 189700, 138847, 4257
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2008-Q55 -- 2005 TZ51, 66008, 189700, 16960, 164400, 8567
E12Siding Spring Survey in New South Wales, 1 in MPEC 2008-Q55 -- 2008 PG2
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-Q55 -- 2008 QZ
H53Thompsonville Obs. in Illinois, 6 in MPEC 2008-Q55 -- 39572, 188452, 164400, 11398, 8567, 4179
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

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Impact Risk Monitoring  on 30 August '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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 QYJPL Sentry1507R E M O V E DJPL: Risk listing removed at 0857 UTC.
NEODyS1506R E M O V E D-

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.

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Chronology  on 30 August '08

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

2108Grabbed MPEC 2008-Q56 - 2006 XA - see above
1507Noted that JPL Sentry has removed 2008 QY as an impact risk - see above
Grabbed MPEC 2008-Q55 - Daily Orbit Update - see above
1506Noted that NEODyS has removed 2008 QY as an impact risk - see above