Contents  on 28 November '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 28 November '08

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There was one listing noted earlier today.

New MPECs  on 28 November '08

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 28 Nov. '08 >>  MPEC 2008-W80 - "07:09 UT" - Daily Orbit Update

Observers  on 28 November '08

Thirteen observing facilities appear in today's MPEC.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 3 in MPEC 2008-W80 -- 2008 WL64, 2008 WH60, 2008 WG14
H55Astronomical Research Obs. (ARO) in Illinois, 18 in MPEC 2008-W80 -- 2008 WZ13, 2008 WY32, 2008 WP1, 2008 WM61, 2008 WM32, 2008 WL61, 2008 WL, 2008 WK, 2008 WD14, 2008 WC, 2008 WB59, 2008 WA14, 2008 VK14, 2008 UT5, 2008 UF7, 2008 UE7, 2008 SV7, 2005 EY
203GiaGa Obs. in Italy, 2 in MPEC 2008-W80 -- 2008 VF, 2008 UE7
J95Great Shefford Obs. in England, 4 in MPEC 2008-W80 -- 2008 WZ13, 2008 WQ63, 2008 WM61, 2008 WK61
A17Guidestar Obs. in Germany, 2 in MPEC 2008-W80 -- 2008 WH60, 2008 WA14
240Herrenberg Obs. in Germany, 2 in MPEC 2008-W80 -- 90403, 85236
560Madonna di Dossobuono Obs. in Italy, 2 in MPEC 2008-W80 -- 2008 WH60, 2008 SQ1
A13Naef Obs. in Switzerland, 1 in MPEC 2008-W80 -- 137799
A53Peschiera del Garda Obs. in Italy, 3 in MPEC 2008-W80 -- 2008 UE7, 2008 SQ1, 2008 MR1
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 16 in MPEC 2008-W80 -- 2008 WN2, 2008 WL60, 2008 WK, 2008 WB59, 2008 VK14, 2008 UZ94, 2008 UE7, 2008 SH82, 2008 RY24, 2008 RG98, 2008 QT3, 2008 MZ, 2006 SZ217, 2005 TZ51, 2003 WX25, 1994 AW1
H36Sandlot Obs. in Kansas, 1 in MPEC 2008-W80 -- 2008 WM64
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2008-W80 -- 2008 WK60, 2008 WD14, 2008 RS26
B39Tradate Obs. in Italy, 4 in MPEC 2008-W80 -- 2008 VU4, 2008 UE7, 85236, 138852
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 November '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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 WM64NEODyS13562030-203126.19e-09-5.50-5.700NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/11/24.489 to 2008/11/27.491."
JPL Sentry13462030-2098102.0e-08-5.38-5.950JPL: "Analysis based on 11 observations spanning 3.0021 days (2008-Nov-24.48804 to 2008-Nov-27.49011)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
2008 WQ63NEODyS1352R E M O V E D-
JPL Sentry1346R E M O V E DJPL: Risk listing removed at 0954 UTC.
2008 WL61NEODyS1352R E M O V E D-
JPL Sentry1346R E M O V E DJPL: Risk listing removed at 1025 UTC.
2008 WZ13NEODyS13562023-2090311.06e-06-2.69-2.930NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2008/11/20.276 to 2008/11/28.091."
JPL Sentry13462023-2107651.3e-06-2.64-2.890JPL: "Analysis based on 34 observations spanning 7.8147 days (2008-Nov-20.27557 to 2008-Nov-28.09031)." Diameter approximately 0.600 km. from mean, weighted H=18.8.

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 November '08

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

1503The NEOCP has become empty
1356Noted that NEODyS has updated its 2008 WM64 risk assessment - see above
Noted that NEODyS has updated its 2008 WZ13 risk assessment - see above
1352Noted that NEODyS has removed 2008 WL61 as an impact risk - see above
Noted that NEODyS has removed 2008 WQ63 as an impact risk - see above
1347Grabbed MPEC 2008-W80 - Daily Orbit Update - see above
1346Noted that JPL Sentry has removed 2008 WL61 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 WM64 risk assessment - see above
Noted that JPL Sentry has removed 2008 WQ63 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 WZ13 risk assessment - see above
0140The NEOCP has become active