Contents  on 4 December '10

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 4 December '10

The MPC's NEO Confirmation Page has 6 listings: 1 new, 5 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and five updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of nineteen listings on the NEOCP at some point today.

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

New MPECs  on 4 December '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been eleven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-X53 - "21:04 UT" - 2010 XT10


MPEC 2010-X52 - "19:56 UT" - 2010 XS10


MPEC 2010-X51 - "19:50 UT" - 2010 XR10


MPEC 2010-X50 - "15:49 UT" - 2010 XO10


MPEC 2010-X49 - "14:59 UT" - 2010 FF10


<< DOU on 4 Dec. '10 >>  MPEC 2010-X48 - "07:07 UT" - Daily Orbit Update


MPEC 2010-X47 - "05:44 UT" - 2010 XK3


MPEC 2010-X46 - "05:26 UT" - 2010 XJ3


MPEC 2010-X45 - "04:41 UT" - 2010 XH3


MPEC 2010-X44 - "04:36 UT" - 2010 XG3


MPEC 2010-X43 - "04:31 UT" - 2010 XF3

Observers  on 4 December '10

A total of 22 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPEC 2010-X48 -- 2010 XU, 2010 XB, 2010 WT8, 2010 WF3, 2010 WD1, 2010 WB
300Bisei Spaceguard Center in Japan, 4 in MPECs 2010-X43, 2010-X46, 2010-X48 & 2010-X53 -- 2010 XX, 2010 XT10, 2010 XJ3, 2010 XF3
703Catalina Sky Survey (CSS) in Arizona, 15 in MPECs 2010-X44, 2010-X46, 2010-X48 & 2010-X53 -- 2010 XT10, 2010 XJ3, 2010 XG3, 2010 WQ7, 2010 VY190, 2007 WW4, 1999 XM141, 251722, 219071, 19764, 177255, 162781, 153814, 137062, 3288
A77Chante-Perdrix Obs. in France, 2 in MPEC 2010-X48 -- 86324, 1580
448Desert Moon Obs. in New Mexico, 2 in MPEC 2010-X48 -- 2010 WQ7, 189011
113Drebach Obs. in Germany, 2 in MPECs 2010-X44 & 2010-X46 -- 2010 XJ3, 2010 XG3
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2010-X48 -- 2010 VY190
704LINEAR in New Mexico, 14 in MPECs 2010-X43, 2010-X48 & 2010-X50 -- 2010 XX, 2010 XO10, 2010 XG, 2010 XF3, 2010 WQ7, 2010 WG3, 2010 LY63, 2010 LF86, 2008 YU32, 96590, 86324, 48603, 251732, 1580
844Los Molinos Obs. in Uruguay, 1 in MPEC 2010-X50 -- 2010 XO10
H01Magdalena Ridge Obs. (MRO) in New Mexico, 9 in MPECs 2010-X43, 2010-X44, 2010-X45, 2010-X46, 2010-X47, 2010-X48, 2010-X51 & 2010-X52 -- 2010 XS10, 2010 XR10, 2010 XK3, 2010 XJ3, 2010 XH3, 2010 XG3, 2010 XF3, 2010 WD9, 2010 UE51
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2010-X48 & 2010-X49 -- 2010 LQ33, 2010 FF10
G96Mt. Lemmon Survey (MLS) in Arizona, 20 in MPECs 2010-X43, 2010-X45, 2010-X47, 2010-X48, 2010-X51 & 2010-X52 -- 2010 XY, 2010 XV, 2010 XS10, 2010 XR10, 2010 XP, 2010 XK3, 2010 XJ3, 2010 XH3, 2010 XF3, 2010 WB3, 2010 VY71, 2010 RO82, 2004 YZ23, 2001 PH9, 68278, 52761, 31221, 31210, 256004, 170891
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2010-X48 -- 2010 WL, 2010 WJ, 2010 VY190
C20Pulkovo Obs. Kislovodsk Mtn. Station in Russia, 1 in MPEC 2010-X48 -- 2010 WV8
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2010-X43 & 2010-X48 -- 2010 XH, 2010 XF3, 2010 WZ8
H36Sandlot Obs. in Kansas, 3 in MPECs 2010-X43, 2010-X44 & 2010-X45 -- 2010 XH3, 2010 XG3, 2010 XF3
204Schiaparelli Obs. in Italy, 7 in MPECs 2010-X43, 2010-X44, 2010-X45, 2010-X46, 2010-X48, 2010-X50 & 2010-X53 -- 2010 XT10, 2010 XO10, 2010 XJ3, 2010 XH3, 2010 XG3, 2010 XF3, 251732
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2010-X48 -- 1997 XS2, 96590, 170891, 137084, 11885
291Spacewatch 1.8m telescope in Arizona, 16 in MPECs 2010-X47, 2010-X48 & 2010-X52 -- 2010 XZ, 2010 XS10, 2010 XP, 2010 XK3, 2010 XK, 2010 XA, 2010 WU8, 2010 WT8, 2010 WS, 2010 WD9, 2010 WB3, 2010 WA9, 2010 VW194, 2010 VA1, 2010 UQ7, 2010 TU5
6734Mike Hicks via Table Mtn. Obs. in southern California, 1 in MPEC 2010-X50 -- 2010 XO10
B18Terskol Obs. in Russia, 1 in MPEC 2010-X44 -- 2010 XG3
H10Tzec Maun Obs. Mayhill in New Mexico, 5 in MPECs 2010-X43, 2010-X44, 2010-X46, 2010-X48 & 2010-X50 -- 2010 XO10, 2010 XJ3, 2010 XG3, 2010 XF3, 2006 VB14
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 December '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
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
2010 XK3JPL Sentry1643209511.7e-09-7.72-7.720JPL: "Analysis based on 22 observations spanning 2.0115 days (2010-Dec-02.1814 to 2010-Dec-04.19294)." Diameter approximately 0.110 km. from mean, weighted H=22.5.
NEODyS16432069-206911.3e-11-9.68-9.680NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2010-12-02.182 to 2010-12-04.194."
2010 XUJPL Sentry16432037-2109382.8e-07-6.94-7.710JPL: "Analysis based on 33 observations spanning 2.0535 days (2010-Dec-01.09924 to 2010-Dec-03.15275)." Diameter approximately 0.033 km. from mean, weighted H=25.1.
NEODyS16432048-2088178.7e-08-7.33-7.910NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2010-12-01.100 to 2010-12-03.154."
2010 XPJPL Sentry16432015-21101002.6e-07-7.54-8.210JPL: "Analysis based on 15 observations spanning .11834 days (2010-Dec-02.24919 to 2010-Dec-02.36753)." Diameter approximately 0.013 km. from mean, weighted H=27.0.
NEODyS16432022-205991.89e-08-8.31-8.590NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2010-12-02.250 to 2010-12-02.372."
2010 XBJPL Sentry1643203611.6e-04-5.50-5.500JPL: "Analysis based on 16 observations spanning .92164 days (2010-Dec-01.34575 to 2010-Dec-02.267391)." Diameter approximately 0.004 km. from mean, weighted H=29.6.
NEODyS16432027-204442.13e-07-8.21-8.460NEODyS: "Based on 16 optical observations (of which 3 are rejected as outliers) from 2010-12-01.347 to 2010-12-02.268."
2010 WA9JPL Sentry16432067-209835.8e-08-7.75-7.770JPL: "Analysis based on 19 observations spanning 3.1504 days (2010-Nov-30.26884 to 2010-Dec-03.41927)." Diameter approximately 0.025 km. from mean, weighted H=25.7.
NEODyS16432067-207121.73e-08-8.29-8.460NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2010-11-30.270 to 2010-12-03.420."
2010 WT8JPL Sentry1643R E M O V E DJPL: Risk listing removed at 1152 UTC.
2010 WD1JPL Sentry16432088-210991.6e-08-8.92-9.420JPL: "Analysis based on 12 observations spanning 1.0349 days (2010-Nov-27.14341 to 2010-Nov-28.178338)." Diameter approximately 0.017 km. from mean, weighted H=26.5.
2010 VW194JPL Sentry16432042-2108224.6e-05-5.36-5.980JPL: "Analysis based on 37 observations spanning 18.141 days (2010-Nov-15.34197 to 2010-Dec-03.48271)." Diameter approximately 0.017 km. from mean, weighted H=26.5.
NEODyS16432047-2089192.81e-05-5.52-5.950NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2010-11-15.343 to 2010-12-03.483."
2010 UE51JPL Sentry16432074-207827.2e-07-8.13-8.340JPL: "Analysis based on 169 observations spanning 35.288 days (2010-Oct-29.25716 to 2010-Dec-03.545)." Diameter approximately 0.007 km. from mean, weighted H=28.3.
NEODyS1643R 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 4 December '10

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

2218Grabbed MPEC 2010-X53 - 2010 XT10 - see above
2043Grabbed MPEC 2010-X51 - 2010 XR10 - see above
Grabbed MPEC 2010-X52 - 2010 XS10 - see above
1643Noted that JPL Sentry has updated its 2010 UE51 risk assessment - see above
Noted that NEODyS has removed 2010 UE51 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 VW194 risk assessment - see above
Noted that NEODyS has updated its 2010 VW194 risk assessment - see above
Noted that JPL Sentry has updated its 2010 WA9 risk assessment - see above
Noted that NEODyS has updated its 2010 WA9 risk assessment - see above
Noted that JPL Sentry has posted 2010 WD1 as an impact risk - see above
Noted that JPL Sentry has removed 2010 WT8 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 XB risk assessment - see above
Noted that NEODyS has posted 2010 XB as an impact risk - see above
Noted that JPL Sentry has posted 2010 XK3 as an impact risk - see above
Noted that NEODyS has posted 2010 XK3 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 XP risk assessment - see above
Noted that NEODyS has updated its 2010 XP risk assessment - see above
Noted that JPL Sentry has updated its 2010 XU risk assessment - see above
Noted that NEODyS has posted 2010 XU as an impact risk - see above
Grabbed MPEC 2010-X48 - Daily Orbit Update - see above
Grabbed MPEC 2010-X49 - 2010 FF10 - see above
Grabbed MPEC 2010-X50 - 2010 XO10 - see above
0605Grabbed MPEC 2010-X47 - 2010 XK3 - see above
0536Grabbed MPEC 2010-X46 - 2010 XJ3 - see above
0507Grabbed MPEC 2010-X45 - 2010 XH3 - see above
0438Grabbed MPEC 2010-X43 - 2010 XF3 - see above
Grabbed MPEC 2010-X44 - 2010 XG3 - see above