Contents  on 27 November '09

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 27 November '09

The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and five updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of 24 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 27 November '09

Minor Planet Electronic Circulars

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


MPEC 2009-W133 - "21:01 UT" - 1998 YW5 = 2009 WL106


MPEC 2009-W132 - "16:33 UT" - 2009 WQ106


MPEC 2009-W131 - "16:29 UT" - 2009 WP106


MPEC 2009-W130 - "16:25 UT" - 2009 WO106


MPEC 2009-W129 - "16:23 UT" - 2009 WN106


MPEC 2009-W128 - "16:20 UT" - 2009 WL106


MPEC 2009-W127 - "16:17 UT" - 2009 WK106


MPEC 2009-W126 - "16:13 UT" - 2009 WJ106


MPEC 2009-W125 - "16:09 UT" - 2009 WH106


MPEC 2009-W124 - "15:47 UT" - 2009 WG106


MPEC 2009-W123 - "15:43 UT" - 2009 WF106


MPEC 2009-W122 - "15:32 UT" - 2009 WE106


MPEC 2009-W121 - "15:24 UT" - 2009 WD106


MPEC 2009-W120 - "15:21 UT" - 2009 WC106


<< DOU on 27 Nov. '09 >>  MPEC 2009-W119 - "07:13 UT" - Daily Orbit Update

Observers  on 27 November '09

A total of 21 observing facilities appear in today's MPECs.

CodeObserver / observatory
300Bisei Spaceguard Center in Japan, 3 in MPEC 2009-W119 -- 2009 UF72, 2009 HV44, 222073
703Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2009-W119, 2009-W123, 2009-W124, 2009-W125 & 2009-W131 -- 2009 WV25, 2009 WP106, 2009 WH106, 2009 WG106, 2009 WF106, 2009 WA105, 2003 WR21
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2009-W121 -- 2009 WD106
448Desert Moon Obs. in New Mexico, 6 in MPEC 2009-W119 -- 2009 WR6, 2009 WP25, 2009 WO6, 2009 WN25, 2009 US87, 2002 VC92
J95Great Shefford Obs. in England, 6 in MPECs 2009-W121, 2009-W122, 2009-W124, 2009-W125, 2009-W126 & 2009-W129 -- 2009 WN106, 2009 WJ106, 2009 WH106, 2009 WG106, 2009 WE106, 2009 WD106
355Hadano Obs. in Japan, 5 in MPEC 2009-W119 -- 2009 ST19, 2009 RN, 2009 NA, 2009 KC3, 2005 RQ6
379Hamamatsu-Yuto Obs. in Japan, 7 in MPEC 2009-W119 -- 2009 WN25, 2009 UV18, 2009 NA, 2006 UR, 2005 RQ6, 2005 MC, 2002 NW16
704LINEAR in New Mexico, 1 in MPEC 2009-W121 -- 2009 WD106
8098Claes-Ingvar Lagerkvist via La Silla in Chile, 1 in MPEC 2009-W119 -- 2009 RM
932McCarthy Obs. in Connecticut, 3 in MPECs 2009-W119 & 2009-W121 -- 2009 WZ104, 2009 WV25, 2009 WD106
900Moriyama Obs. in Japan, 1 in MPEC 2009-W121 -- 2009 WD106
G96Mt. Lemmon Survey (MLS) in Arizona, 20 in MPECs 2009-W119, 2009-W120, 2009-W122, 2009-W123, 2009-W124, 2009-W125, 2009-W126, 2009-W127, 2009-W128, 2009-W129, 2009-W130, 2009-W131 & 2009-W132 -- 2009 WZ53, 2009 WW104, 2009 WQ106, 2009 WP106, 2009 WO106, 2009 WN106, 2009 WN105, 2009 WM1, 2009 WL106, 2009 WK106, 2009 WJ106, 2009 WH106, 2009 WG106, 2009 WG104, 2009 WF106, 2009 WE106, 2009 WC106, 2009 VT, 2009 VP, 2007 HX4
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 8 in MPEC 2009-W119 -- 2009 WV25, 2009 ST19, 2009 RN, 2009 QD34, 2009 NH, 2009 NA, 2009 MX6, 2006 UR
854Sabino Canyon Obs. in Arizona, 5 in MPECs 2009-W121, 2009-W123, 2009-W124, 2009-W129 & 2009-W131 -- 2009 WP106, 2009 WN106, 2009 WG106, 2009 WF106, 2009 WD106
H36Sandlot Obs. in Kansas, 4 in MPECs 2009-W121, 2009-W123, 2009-W124 & 2009-W130 -- 2009 WO106, 2009 WG106, 2009 WF106, 2009 WD106
E12Siding Spring Survey in New South Wales, 1 in MPEC 2009-W119 -- 2009 WN25
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2009-W119, 2009-W123, 2009-W127 & 2009-W128 -- 2009 WY51, 2009 WX6, 2009 WL106, 2009 WK6, 2009 WK106, 2009 WF106, 2009 WF104, 1995 SA
926Tenagra II Obs. in Arizona, 12 in MPECs 2009-W121, 2009-W122, 2009-W123, 2009-W124, 2009-W125, 2009-W126, 2009-W127, 2009-W128, 2009-W129, 2009-W130, 2009-W131 & 2009-W132 -- 2009 WQ106, 2009 WP106, 2009 WO106, 2009 WN106, 2009 WL106, 2009 WK106, 2009 WJ106, 2009 WH106, 2009 WG106, 2009 WF106, 2009 WE106, 2009 WD106
H53Thompsonville Obs. in Illinois, 1 in MPEC 2009-W119 -- 2009 NH
198Wildberg Obs. in Germany, 1 in MPEC 2009-W119 -- 2009 WV25
A79Zvezdno Obshtestvo Obs. in Bulgaria, 1 in MPEC 2009-W121 -- 2009 WD106
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 November '09

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. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few 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
2009 WO106JPL Sentry19022022-2108447.6e-09-5.06-5.840JPL: "Analysis based on 25 observations spanning 1.0371 days (2009-Nov-26.50819 to 2009-Nov-27.5453)." Diameter approximately 0.484 km. from mean, weighted H=19.2.
2009 WF106JPL Sentry18302015-207385.1e-09-4.64-4.780JPL: "Analysis based on 33 observations spanning 2.0598 days (2009-Nov-25.40833 to 2009-Nov-27.46815)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
2009 WA105JPL Sentry1451R E M O V E DJPL: Risk listing removed at 1029 UTC.
2009 WG104JPL Sentry1451R E M O V E DJPL: Risk listing removed at 1029 UTC.
NEODyS1451R E M O V E D-
2009 WF104NEODyS1451R E M O V E D-
2009 WZ53JPL Sentry14512020-210462.6e-08-7.05-7.430JPL: "Analysis based on 22 observations spanning 2.9471 days (2009-Nov-23.28123 to 2009-Nov-26.22829)." Diameter approximately 0.052 km. from mean, weighted H=24.1.
NEODyS1451R E M O V E D-
2009 WM1JPL Sentry15322018-2098942.3e-04-0.87-1.121JPL: "Analysis based on 62 observations spanning 9.0309 days (2009-Nov-17.4641 to 2009-Nov-26.49501)." Diameter approximately 0.280 km. from mean, weighted H=20.4.
NEODyS14512018-20901402.23e-04-0.87-1.131NEODyS: "Based on 62 optical observations (of which 0 are rejected as outliers) from 2009/11/17.465 to 2009/11/26.496. NOTE: The Virtual Impactors in 2018/11/22.956 and 2027/11/23.217 ... are rated as Torino Scale 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 27 November '09

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

2130Grabbed MPEC 2009-W133 - 1998 YW5 = 2009 WL106 - see above
1902Noted that JPL Sentry has posted 2009 WO106 as an impact risk - see above
1830Noted that JPL Sentry has posted 2009 WF106 as an impact risk - see above
1703Grabbed MPEC 2009-W125 - 2009 WH106 - see above
Grabbed MPEC 2009-W126 - 2009 WJ106 - see above
Grabbed MPEC 2009-W127 - 2009 WK106 - see above
Grabbed MPEC 2009-W128 - 2009 WL106 - see above
Grabbed MPEC 2009-W129 - 2009 WN106 - see above
Grabbed MPEC 2009-W130 - 2009 WO106 - see above
Grabbed MPEC 2009-W131 - 2009 WP106 - see above
Grabbed MPEC 2009-W132 - 2009 WQ106 - see above
1606Grabbed MPEC 2009-W122 - 2009 WE106 - see above
Grabbed MPEC 2009-W123 - 2009 WF106 - see above
Grabbed MPEC 2009-W124 - 2009 WG106 - see above
1532Noted that JPL Sentry has updated its 2009 WM1 risk assessment - see above
Grabbed MPEC 2009-W120 - 2009 WC106 - see above
Grabbed MPEC 2009-W121 - 2009 WD106 - see above
1451Noted that JPL Sentry has removed 2009 WA105 as an impact risk - see above
Noted that NEODyS has removed 2009 WF104 as an impact risk - see above
Noted that JPL Sentry has removed 2009 WG104 as an impact risk - see above
Noted that NEODyS has removed 2009 WG104 as an impact risk - see above
Noted that NEODyS has updated its 2009 WM1 risk assessment - see above
Noted that JPL Sentry has updated its 2009 WZ53 risk assessment - see above
Noted that NEODyS has removed 2009 WZ53 as an impact risk - see above
Grabbed MPEC 2009-W119 - Daily Orbit Update - see above