Contents  on 9 December '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 9 December '08

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There were two listings noted earlier today.

New MPECs  on 9 December '08

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 9 Dec. '08 >>  MPEC 2008-X70 - "07:11 UT" - Daily Orbit Update

Observers  on 9 December '08

Nineteen observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 23 in MPEC 2008-X70 -- 2008 XS, 2008 XK1, 2008 XJ, 2008 XE2, 2008 XC2, 2008 XB2, 2008 WM61, 2008 WM32, 2008 WL60, 2008 WK61, 2008 WK, 2008 WC14, 2008 VK14, 2008 UE7, 2008 SV7, 2008 JP14, 2006 VB14, 2005 XH8, 2004 XL14, 2001 WA25, 2001 OE84, 1999 AQ10, 68350
A81Balzaretto Obs. in Italy, 2 in MPEC 2008-X70 -- 2008 XM1, 2008 XB1
703Catalina Sky Survey in Arizona, 1 in MPEC 2008-X70 -- 2008 SV7
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2008-X70 -- 194386
203GiaGa Obs. in Italy, 4 in MPEC 2008-X70 -- 2008 XM1, 2008 XC1, 2008 UE7, 162900
J95Great Shefford Obs. in England, 1 in MPEC 2008-X70 -- 2008 WY94
B15Inastars Obs. in Germany, 3 in MPEC 2008-X70 -- 2008 XM1, 2008 WB59, 2008 VU4
560Madonna di Dossobuono Obs. in Italy, 7 in MPEC 2008-X70 -- 2008 XC1, 2008 XB2, 2008 XA2, 2008 VU4, 2008 SQ1, 2008 SP7, 2001 LM5
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-X70 -- 2008 XC1, 2001 WA25
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPEC 2008-X70 -- 2008 XN, 2008 UZ201, 2008 RT26
A13Naef Obs. in Switzerland, 3 in MPEC 2008-X70 -- 199801, 136849, 7358
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2008-X70 -- 2008 XC1, 2008 WL60, 2008 VK14, 2008 UE7
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2008-X70 -- 2008 XC1
233San Vito Obs. in Italy, 2 in MPEC 2008-X70 -- 2005 TZ51, 1620
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2008-X70 -- 2008 MN1, 2008 EV5, 4257
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-X70 -- 2008 MZ
A78Stia Obs. in Italy, 3 in MPEC 2008-X70 -- 2008 XM1, 2008 XC1, 2008 WL60
B39Tradate Obs. in Italy, 2 in MPEC 2008-X70 -- 2008 XC1, 2008 WB59
A48Verona Obs. in Italy, 3 in MPEC 2008-X70 -- 2008 XC1, 2008 WB59, 2008 UE7
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 December '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS 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.
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 XC1JPL Sentry14222085-208824.0e-06-4.91-5.200JPL: "Analysis based on 88 observations spanning 5.6254 days (2008-Dec-03.36799 to 2008-Dec-08.99337)." Diameter approximately 0.065 km. from mean, weighted H=23.6.
NEODyS14222085-208824.0e-06-4.91-5.200NEODyS: "Based on 88 optical observations (of which 0 are rejected as outliers) from 2008/12/03.369 to 2008/12/08.994."
2008 WY94JPL Sentry14222052-2076313.0e-04-4.11-4.160JPL: "Analysis based on 30 observations spanning 7.2084 days (2008-Nov-29.54021 to 2008-Dec-06.748633)." Diameter approximately 0.025 km. from mean, weighted H=25.6.
NEODyS14222061-2089381.9e-04-4.32-4.430NEODyS: "Based on 32 optical observations (of which 3 are rejected as outliers) from 2008/11/29.541 to 2008/12/06.749."

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 9 December '08

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

1544Noted that the NEOCP has become empty
1422Noted that JPL Sentry has updated its 2008 WY94 risk assessment - see above
Noted that NEODyS has updated its 2008 WY94 risk assessment - see above
Noted that JPL Sentry has updated its 2008 XC1 risk assessment - see above
Noted that NEODyS has updated its 2008 XC1 risk assessment - see above
Grabbed MPEC 2008-X70 - Daily Orbit Update - see above