Contents  on 25 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 25 November '08

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

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

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 25 November '08

Minor Planet Electronic Circulars

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


MPEC 2008-W69 - "22:09 UT" - 2008 WT62


MPEC 2008-W68 - "22:06 UT" - 2008 WS62


MPEC 2008-W67 - "17:35 UT" - 2001 VR78


MPEC 2008-W66 - "16:57 UT" - 2008 WM61


MPEC 2008-W65 - "16:49 UT" - 2008 WL61


MPEC 2008-W64 - "16:42 UT" - 2008 WK61


MPEC 2008-W63 - "14:20 UT" - 2007 FE20


<< DOU on 25 Nov. '08 >>  MPEC 2008-W62 - "07:09 UT" - Daily Orbit Update

Observers  on 25 November '08

A total of 27 observing facilities appear in today's MPECs.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 4 in MPEC 2008-W62 -- 2005 WS55, 1994 AW1, 36236, 137032
H55Astronomical Research Obs. (ARO) in Illinois, 31 in MPECs 2008-W62, 2008-W66, 2008-W68 & 2008-W69 -- 2008 WW32, 2008 WT62, 2008 WS62, 2008 WQ1, 2008 WP1, 2008 WN, 2008 WM61, 2008 WM32, 2008 WL, 2008 WG14, 2008 WC14, 2008 WC, 2008 WB14, 2008 WB, 2008 WA14, 2008 VU3, 2008 VN, 2008 VK14, 2008 VF, 2008 VA15, 2008 UZ94, 2008 UL90, 2008 UE7, 2008 SV7, 2008 RT26, 2008 RT, 2008 RQ24, 2006 SX217, 2004 XK3, 2003 UD8, 2002 NW16
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2008-W62 & 2008-W67 -- 2001 VR78, 68031, 144900
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2008-W62 -- 162679
448Desert Moon Obs. in New Mexico, 5 in MPEC 2008-W62 -- 2008 WC14, 2008 VH14, 2008 VB1, 2008 UL90, 2008 MB5
651Grasslands Obs. in Arizona, 3 in MPECs 2008-W65, 2008-W68 & 2008-W69 -- 2008 WT62, 2008 WS62, 2008 WL61
J95Great Shefford Obs. in England, 9 in MPECs 2008-W62, 2008-W64, 2008-W65, 2008-W66 & 2008-W67 -- 2008 WM61, 2008 WM32, 2008 WL61, 2008 WK61, 2008 WD, 2008 WC, 2008 WB59, 2008 UL90, 2001 VR78
G92Jarnac Obs. in Arizona, 1 in MPEC 2008-W62 -- 13651
H05Kline Obs. in Colorado, 1 in MPEC 2008-W62 -- 2008 WB59
704LINEAR in New Mexico, 14 in MPECs 2008-W62, 2008-W64 & 2008-W66 -- 2008 WM61, 2008 WK61, 2008 WH60, 2008 WC, 2008 UE7, 2008 UC95, 2008 MZ, 2005 TZ51, 2001 XN254, 199801, 19356, 144901, 7358, 5011
J75La Sagra Obs. in Spain, 1 in MPEC 2008-W62 -- 194386
130Lumezzane Obs. in Italy, 4 in MPEC 2008-W62 -- 2008 UZ94, 1994 AW1, 85236, 36236
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2008-W65, 2008-W68 & 2008-W69 -- 2008 WT62, 2008 WS62, 2008 WL61
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2008-W62 & 2008-W63 -- 2007 FE20, 144898
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2008-W62 -- 2008 UE7
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-W62 -- 2005 TZ51
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2008-W62, 2008-W65, 2008-W68 & 2008-W69 -- 2008 WT62, 2008 WS62, 2008 WL61, 2005 ND7, 2003 YX1, 1995 MA1, 96315, 2368
J47Nazaret Obs. in Spain, 1 in MPEC 2008-W62 -- 2008 WK32
434San Benedetto Po Obs. in Italy, 2 in MPEC 2008-W62 -- 2008 SQ1, 162900
H36Sandlot Obs. in Kansas, 2 in MPECs 2008-W64 & 2008-W67 -- 2008 WK61, 2001 VR78
B74Santa Maria de Montmagastrell Obs. in Spain, 2 in MPEC 2008-W62 -- 2008 UE7, 2008 SE
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2008-W62 & 2008-W67 -- 2008 WK60, 2001 VR78, 22099
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2008-W62 & 2008-W67 -- 2008 UO90, 2006 UP, 2001 VR78, 163373
291Spacewatch 1.8m telescope in Arizona, 11 in MPEC 2008-W62 -- 2008 WZ13, 2008 WY13, 2008 WX32, 2008 WN2, 2008 WK32, 2008 WF14, 2008 VB1, 2008 UW99, 2008 UO90, 2003 GY, 1994 UG
H53Thompsonville Obs. in Illinois, 5 in MPEC 2008-W62 -- 2008 UE7, 2006 SZ217, 85236, 53430, 3360
B39Tradate Obs. in Italy, 3 in MPEC 2008-W62 -- 2006 SZ217, 53430, 138852
648Winer Obs. in Arizona, 1 in MPEC 2008-W66 -- 2008 WM61
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 November '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 WL61JPL Sentry20342012-2106257.6e-09-4.73-5.080JPL: "Analysis based on 18 observations spanning .76602 days (2008-Nov-24.13737 to 2008-Nov-24.90339)." Diameter approximately 0.391 km. from mean, weighted H=19.7.
2008 WB59JPL Sentry1444R E M O V E DJPL: Risk listing removed at 1031 UTC.
NEODyS1444R E M O V E D-
2008 WW32JPL Sentry14442066-210521.5e-09-6.91-6.940JPL: "Analysis based on 19 observations spanning 2.9945 days (2008-Nov-21.12895 to 2008-Nov-24.12341)." Diameter approximately 0.239 km. from mean, weighted H=20.8.
NEODyS1444205511.06e-08-6.11-6.110NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/11/21.130 to 2008/11/24.124."
2008 WZ13JPL Sentry14442023-2108796.6e-07-3.03-3.790JPL: "Analysis based on 22 observations spanning 4.0247 days (2008-Nov-20.27557 to 2008-Nov-24.30027)." Diameter approximately 0.649 km. from mean, weighted H=18.6.
NEODyS14442012-2090644.07e-07-2.90-3.280NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2008/11/20.276 to 2008/11/24.301."
2008 WY13JPL Sentry14442083-210637.4e-08-5.30-5.330JPL: "Analysis based on 26 observations spanning 3.9864 days (2008-Nov-20.27393 to 2008-Nov-24.2603)." Diameter approximately 0.170 km. from mean, weighted H=21.5.
NEODyS1444208316.15e-08-5.36-5.360NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/11/20.275 to 2008/11/24.261."
2008 UW99JPL Sentry1444209311.1e-06-6.16-6.160JPL: "Analysis based on 47 observations spanning 23.997 days (2008-Oct-31.45784 to 2008-Nov-24.45435)." Diameter approximately 0.039 km. from mean, weighted H=24.7.

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 25 November '08

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

2225Grabbed MPEC 2008-W68 - 2008 WS62 - see above
Grabbed MPEC 2008-W69 - 2008 WT62 - see above
2034Noted that JPL Sentry has posted 2008 WL61 as an impact risk - see above
1850Grabbed MPEC 2008-W67 - 2001 VR78 - see above
1733Grabbed MPEC 2008-W65 - 2008 WL61 - see above
1732Grabbed MPEC 2008-W64 - 2008 WK61 - see above
Grabbed MPEC 2008-W66 - 2008 WM61 - see above
1445Grabbed MPEC 2008-W62 - Daily Orbit Update - see above
1444Noted that JPL Sentry has updated its 2008 UW99 risk assessment - see above
Noted that JPL Sentry has removed 2008 WB59 as an impact risk - see above
Noted that NEODyS has removed 2008 WB59 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 WW32 risk assessment - see above
Noted that NEODyS has updated its 2008 WW32 risk assessment - see above
Noted that JPL Sentry has updated its 2008 WY13 risk assessment - see above
Noted that NEODyS has updated its 2008 WY13 risk assessment - see above
Noted that JPL Sentry has updated its 2008 WZ13 risk assessment - see above
Noted that NEODyS has updated its 2008 WZ13 risk assessment - see above
Grabbed MPEC 2008-W63 - 2007 FE20 - see above