Contents  on 16 October '08


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 16 October '08

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (checked at 2358 UTC). It was last noted active yesterday.

New MPECs  on 16 October '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 16 Oct. '08 >>  MPEC 2008-U01 - "06:11 UT" - Daily Orbit Update

Observers  on 16 October '08

Nine observing facilities appear in today's MPEC.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 2 in MPEC 2008-U01 -- 1994 AW1, 105140
H55Astronomical Research Obs. (ARO) in Illinois, 33 in MPEC 2008-U01 -- 2008 TZ3, 2008 TY3, 2008 TR2, 2008 TK9, 2008 TK, 2008 TF4, 2008 TD, 2008 TC4, 2008 TB2, 2008 SX7, 2008 SV7, 2008 SV11, 2008 SU150, 2008 SS, 2008 SR, 2008 SQ7, 2008 SQ, 2008 SG148, 2008 SE, 2008 SC85, 2008 RY24, 2008 RT26, 2008 RT, 2008 RG1, 2008 RE1, 2008 QZ, 2008 QW11, 2008 QT3, 2008 QD1, 2002 XN40, 2001 UZ16, 2001 SK9, 1994 AW1
703Catalina Sky Survey in Arizona, 1 in MPEC 2008-U01 -- 2008 TY9
448Desert Moon Obs. in New Mexico, 2 in MPEC 2008-U01 -- 2008 SR1, 2008 SH82
J34La Fecha Obs. in Spain, 2 in MPEC 2008-U01 -- 2008 TT26, 2006 SZ217
560Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2008-U01 -- 2008 TT26, 2008 SU1, 2005 TZ51
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-U01 -- 2001 XW266
204Schiaparelli Obs. in Italy, 2 in MPEC 2008-U01 -- 2008 SP7, 2008 SE
E12Siding Spring Survey (SSS) in New South Wales, 5 in MPEC 2008-U01 -- 2008 TB4, 2008 SX7, 2008 SE85, 2005 WD1, 4257
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 October '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.





Notes for Today's Latest Risk Assessments
2008 TZ3JPL Sentry14502025-2107631.8e-07-4.32-5.080JPL: "Analysis based on 24 observations spanning 3.9059 days (2008-Oct-06.33267 to 2008-Oct-10.23854)." Diameter approximately 0.312 km. from mean, weighted H=20.2.
NEODyS14502027-2088461.86e-07-4.29-5.020NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2008/10/06.333 to 2008/10/10.239."
2008 SH82JPL Sentry1450208112.1e-09-7.02-7.020JPL: "Analysis based on 49 observations spanning 18.902 days (2008-Sep-26.21299 to 2008-Oct-15.11494)." Diameter approximately 0.210 km. from mean, weighted H=21.1.
NEODyS1450R 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.

Chronology  on 16 October '08

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

1450Noted that JPL Sentry has updated its 2008 SH82 risk assessment - see above
Noted that NEODyS has removed 2008 SH82 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 TZ3 risk assessment - see above
Noted that NEODyS has updated its 2008 TZ3 risk assessment - see above
Grabbed MPEC 2008-U01 - Daily Orbit Update - see above