Contents  on 24 October '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 24 October '08

The MPC's NEO Confirmation Page has 8 listings: 3 new, 5 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and five updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of sixteen objects listed on the NEOCP at some point today.

New MPECs  on 24 October '08

Minor Planet Electronic Circulars

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


MPEC 2008-U48 - "18:19 UT" - 2008 UT2


MPEC 2008-U47 - "18:16 UT" - 2008 US2


MPEC 2008-U46 - "18:12 UT" - 2008 UR2


MPEC 2008-U45 - "18:00 UT" - 2008 UQ2


<< DOU on 24 Oct. '08 >>  MPEC 2008-U44 - "06:12 UT" - Daily Orbit Update

Observers  on 24 October '08

A total of 20 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-U44 -- 2003 WX25
G58Chabot Obs. in northern California, 3 in MPEC 2008-U44 -- 2008 SQ1, 185851, 4183
448Desert Moon Obs. in New Mexico, 6 in MPEC 2008-U44 -- 2008 TV26, 2008 TV25, 2008 TF4, 2008 SX245, 2008 SC85, 2001 OG25
113Drebach Obs. in Germany, 1 in MPEC 2008-U44 -- 2003 WX25
651Grasslands Obs. in Arizona, 3 in MPECs 2008-U45, 2008-U46 & 2008-U48 -- 2008 UT2, 2008 UR2, 2008 UQ2
A17Guidestar Obs. in Germany, 1 in MPEC 2008-U44 -- 2008 TF4
704LINEAR in New Mexico, 7 in MPEC 2008-U44 -- 2008 RY24, 2002 WP11, 2001 UY4, 1998 SJ70, 54071, 189700, 163000
304Las Campanas Obs. in Chile, 11 in MPECs 2008-U44, 2008-U45, 2008-U46 & 2008-U48 -- 2008 UT2, 2008 UR2, 2008 UQ2, 2008 TN26, 2008 SX245, 2008 SS251, 2008 RP108, 2008 QD1, 2008 OB9, 2008 MH1, 2008 CR118
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2008-U44, 2008-U46 & 2008-U47 -- 2008 US2, 2008 UR2, 2008 UR, 2008 UF1
568*Paul Wiegert on Mauna Kea in Hawaii, 1 in MPEC 2008-U44 -- 2001 UZ16
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-U44 -- 2008 UC
B67Mirasteilas Obs. in Switzerland, 4 in MPEC 2008-U44 -- 2001 VG5, 2001 UY4, 1994 AW1, 90075
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2008-U44, 2008-U45, 2008-U47 & 2008-U48 -- 2008 UT2, 2008 US2, 2008 UQ2, 2008 UF1, 2001 TC, 153306
J47Nazaret Obs. in Spain, 1 in MPEC 2008-U44 -- 2008 TT26
J69North Obs. in England, 1 in MPEC 2008-U44 -- 2008 TT26
E09Oakley Southern Sky Obs. in New South Wales, 1 in MPEC 2008-U44 -- 2008 QS11
473Remanzacco Obs. in Italy, 2 in MPECs 2008-U46 & 2008-U48 -- 2008 UT2, 2008 UR2
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2008-U44 -- 2008 UU1, 2003 WX25, 7888, 4257
691Spacewatch 0.9m telescope in Arizona, 7 in MPECs 2008-U44, 2008-U46 & 2008-U47 -- 2008 US2, 2008 UR2, 2004 TU11, 2002 VY94, 90075, 162900, 153306
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2008-U44, 2008-U45, 2008-U46 & 2008-U47 -- 2008 US2, 2008 UR2, 2008 UQ2, 2008 TR10, 2008 TJ157, 2008 SW11, 2006 HD2
H10Tzec Maun Obs. Mayhill in New Mexico, 2 in MPEC 2008-U44 -- 2008 TV26, 2008 QC
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 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.
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 UF1JPL Sentry1545R E M O V E DJPL: Risk listing removed at 0852 UTC.
NEODyS1545R 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 24 October '08

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

1835Grabbed MPEC 2008-U45 - 2008 UQ2 - see above
Grabbed MPEC 2008-U46 - 2008 UR2 - see above
Grabbed MPEC 2008-U47 - 2008 US2 - see above
Grabbed MPEC 2008-U48 - 2008 UT2 - see above
1546Grabbed MPEC 2008-U44 - Daily Orbit Update - see above
1545Noted that JPL Sentry has removed 2008 UF1 as an impact risk - see above
Noted that NEODyS has removed 2008 UF1 as an impact risk - see above