Contents  on 22 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 22 November '08

The MPC's NEO Confirmation Page has 1 listing: 1 new

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new listing. This was a "one nighter." So far The Tracking News has counted a total of nine 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 22 November '08

Minor Planet Electronic Circulars

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


MPEC 2008-W53 - "13:51 UT" - 2008 WY32


MPEC 2008-W52 - "13:48 UT" - 2008 WX32


MPEC 2008-W51 - "13:45 UT" - 2008 WW32


<< DOU on 22 Nov. '08 >>  MPEC 2008-W50 - "07:08 UT" - Daily Orbit Update


MPEC 2008-W49 - "01:18 UT" - 2008 WM32


MPEC 2008-W48 - "01:00 UT" - 2008 WK32

Observers  on 22 November '08

A total of 23 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 25 in MPECs 2008-W49 & 2008-W50 -- 2008 WM32, 2008 WK, 2008 WE, 2008 WD, 2008 WC14, 2008 WC, 2008 WB, 2008 VZ3, 2008 VF, 2008 VE, 2008 UW5, 2008 UE7, 2008 TR2, 2008 TF4, 2008 SV7, 2008 SQ, 2008 SP7, 2008 SN1, 2008 SE, 2008 QY, 2008 QC, 2008 MZ, 2004 FH11, 6569, 2608
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-W48 -- 2008 WK32
493Calar Alto Obs. in Spain, 2 in MPECs 2008-W49 & 2008-W50 -- 2008 WM32, 2008 WL32
703Catalina Sky Survey (CSS) in Arizona, 15 in MPECs 2008-W49 & 2008-W50 -- 2008 WQ2, 2008 WM32, 2008 NU, 2005 WD1, 2005 TZ51, 2004 TL19, 2001 XQ, 2001 TW1, 85774, 185851, 141052, 136773, 13651, 12538, 1863
448Desert Moon Obs. in New Mexico, 4 in MPEC 2008-W50 -- 2008 VQ4, 2008 VH14, 2008 TQ2, 2008 SJ82
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-W50 -- 2008 WL32
J95Great Shefford Obs. in England, 1 in MPEC 2008-W50 -- 2008 WL32
B15Inastars Obs. in Germany, 1 in MPEC 2008-W50 -- 31221
704LINEAR in New Mexico, 10 in MPEC 2008-W50 -- 2008 WP2, 2008 WL32, 2008 WD, 2003 WX25, 190135, 162900, 137799, 5143, 4183, 2212
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2008-W50 -- 53430
130Lumezzane Obs. in Italy, 8 in MPEC 2008-W50 -- 2008 VF, 2008 UE7, 2003 WX25, 2001 LM5, 1996 TE9, 162679, 7335, 3360
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-W50 -- 2008 VL14
118Modra Obs. in Slovakia, 1 in MPEC 2008-W50 -- 2008 VQ4
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2008-W50, 2008-W51, 2008-W52 & 2008-W53 -- 2008 WY32, 2008 WX32, 2008 WW32, 2008 WO2, 2008 WD, 2008 VH14, 2001 VC76, 85774, 7358, 6178, 5011
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2008-W50 -- 2008 VU4, 2008 VF, 2008 UE7, 2008 SP7, 2008 MZ, 2006 SZ217, 2001 LM5
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-W50 -- 2008 WD
H36Sandlot Obs. in Kansas, 4 in MPECs 2008-W48, 2008-W49, 2008-W50 & 2008-W52 -- 2008 WX32, 2008 WM32, 2008 WK32, 2008 WD
204Schiaparelli Obs. in Italy, 3 in MPEC 2008-W50 -- 85774, 53430, 199801
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2008-W50 -- 2008 EV5, 2007 VL243
691Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2008-W50 -- 2008 WL32, 190166, 162004, 137052, 136923, 7335
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2008-W48, 2008-W50, 2008-W51 & 2008-W52 -- 2008 WZ13, 2008 WY13, 2008 WX32, 2008 WW32, 2008 WP1, 2008 WN, 2008 WK32, 2008 WD14, 2008 WA14, 2008 UT99, 163373
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2008-W49 & 2008-W50 -- 2008 WM32, 2008 WD
H53Thompsonville Obs. in Illinois, 7 in MPEC 2008-W50 -- 2008 SQ1, 53430, 162900, 137805, 8567, 3360, 1627
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 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 WW32JPL Sentry17102023-2080135.5e-09-6.41-6.960JPL: "Analysis based on 12 observations spanning 1.0426 days (2008-Nov-21.12895 to 2008-Nov-22.17155)." Diameter approximately 0.157 km. from mean, weighted H=21.7.
2008 WK32NEODyS15302065-207324.55e-10-6.74-6.990NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2008/11/21.330 to 2008/11/21.931."
JPL Sentry05032037-208951.5e-09-6.21-6.730JPL: "Analysis based on 14 observations spanning .60095 days (2008-Nov-21.32959 to 2008-Nov-21.93054)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
2008 WJ14NEODyS1530207114.43e-11-11.14-11.140NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2008/11/21.362 to 2008/11/21.464."
2008 WD14JPL Sentry15292086-210732.4e-08-6.84-6.850JPL: "Analysis based on 18 observations spanning 1.0296 days (2008-Nov-21.09428 to 2008-Nov-22.12383)." Diameter approximately 0.100 km. from mean, weighted H=22.6.
2008 WA14JPL Sentry1529R E M O V E DJPL: Risk listing removed at 0954 UTC.
2008 WZ13NEODyS15302012-20901213.49e-07-2.83-3.160NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/11/20.276 to 2008/11/22.261."
JPL Sentry15292020-21081103.0e-07-3.30-4.190JPL: "Analysis based on 20 observations spanning 1.9842 days (2008-Nov-20.27557 to 2008-Nov-22.2598)." Diameter approximately 0.662 km. from mean, weighted H=18.5.
2008 WY13NEODyS15302064-208672.7e-08-5.60-5.810NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/11/20.275 to 2008/11/22.278."
JPL Sentry15292064-2107171.1e-07-5.10-5.640JPL: "Analysis based on 20 observations spanning 2.0032 days (2008-Nov-20.27393 to 2008-Nov-22.27709)." Diameter approximately 0.183 km. from mean, weighted H=21.3.
2008 WO2NEODyS15302074-208943.86e-07-9.08-9.210NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2008/11/20.219 to 2008/11/21.383."
JPL Sentry15292065-209592.0e-05-7.40-7.640JPL: "Analysis based on 24 observations spanning 1.1647 days (2008-Nov-20.21777 to 2008-Nov-21.38252)." Diameter approximately 0.004 km. from mean, weighted H=29.8.
2008 WP1NEODyS1530R E M O V E D-
JPL Sentry1529R E M O V E DJPL: Risk listing removed at 0949 UTC.
2008 VL14NEODyS15302071-207948.95e-07-3.89-4.170NEODyS: "Based on 45 optical observations (of which 1 are rejected as outliers) from 2008/11/09.266 to 2008/11/21.109."
JPL Sentry15292071-207638.7e-07-3.90-4.180JPL: "Analysis based on 44 observations spanning 11.842 days (2008-Nov-09.2656 to 2008-Nov-21.10802)." Diameter approximately 0.201 km. from mean, weighted H=21.1.

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 22 November '08

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

1710Noted that JPL Sentry has posted 2008 WW32 as an impact risk - see above
1530Noted that NEODyS has updated its 2008 VL14 risk assessment - see above
Noted that NEODyS has posted 2008 WJ14 as an impact risk - see above
Noted that NEODyS has posted 2008 WK32 as an impact risk - see above
Noted that NEODyS has posted 2008 WO2 as an impact risk - see above
Noted that NEODyS has removed 2008 WP1 as an impact risk - see above
Noted that NEODyS has posted 2008 WY13 as an impact risk - see above
Noted that NEODyS has posted 2008 WZ13 as an impact risk - see above
Grabbed MPEC 2008-W50 - Daily Orbit Update - see above
Grabbed MPEC 2008-W51 - 2008 WW32 - see above
Grabbed MPEC 2008-W52 - 2008 WX32 - see above
Grabbed MPEC 2008-W53 - 2008 WY32 - see above
1529Noted that JPL Sentry has updated its 2008 VL14 risk assessment - see above
Noted that JPL Sentry has removed 2008 WA14 as an impact risk - see above
Noted that JPL Sentry has posted 2008 WD14 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 WO2 risk assessment - see above
Noted that JPL Sentry has removed 2008 WP1 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 WY13 risk assessment - see above
Noted that JPL Sentry has updated its 2008 WZ13 risk assessment - see above
0503Noted that JPL Sentry has posted 2008 WK32 as an impact risk - see above
0202Grabbed MPEC 2008-W48 - 2008 WK32 - see above
Grabbed MPEC 2008-W49 - 2008 WM32 - see above