Contents  on 30 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 30 November '09

The MPC's NEO Confirmation Page has 4 listings: 1 new, 3 updated

When last checked at 2304 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and three updated listings. Of these, three were "one nighters."

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 30 November '09

Minor Planet Electronic Circulars

As of last check at 2304 UTC, there have been twelve MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-W149 - "17:11 UT" - Observations of Comets


MPEC 2009-W148 - "16:56 UT" - Comet C/2009 W2 (Boattini)


MPEC 2009-W147 - "16:50 UT" - Comet P/2009 W1 (Hill)


MPEC 2009-W146 - "16:35 UT" - Comet P/2009 U6 (LINEAR)


MPEC 2009-W145 - "16:27 UT" - Comet C/2009 U5 (Grauer)


MPEC 2009-W144 - "16:22 UT" - Comet C/2009 U3 (Hill)


MPEC 2009-W143 - "16:15 UT" - Comet C/2009 T3 (LINEAR)


MPEC 2009-W142 - "16:00 UT" - Comet P/2009 T2 (La Sagra)


MPEC 2009-W141 - "15:53 UT" - Comet C/2009 T1 (McNaught)


MPEC 2009-W140 - "15:47 UT" - 2009 SX1


MPEC 2009-W139 - "15:32 UT" - Comet P/2009 S1 (Gibbs)


<< DOU on 30 Nov. '09 >>  MPEC 2009-W138 - "07:14 UT" - Daily Orbit Update

Observers  on 30 November '09

A total of 50 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 11 in MPECs 2009-W138, 2009-W148 & 2009-W149 -- C/2009 W2, P/2009 Q5, C/2008 Q3, C/2006 W3, C/2006 Q1, 4015, 226P, 157P, 94P, 88P, 31P
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 8 in MPEC 2009-W138 -- 2009 WX51, 2009 WM1, 2009 WF106, 2009 WC26, 2009 WA105, 2009 VW, 2009 VO24, 2009 UK28
J51Atlante Obs. in the Canary Islands, 2 in MPECs 2009-W142 & 2009-W149 -- P/2009 T2, 30P
215Buchloe Obs. in Germany, 1 in MPEC 2009-W146 -- P/2009 U6
I10Campo Catino Austral Obs. (CAO) in Chile, 12 in MPECs 2009-W139, 2009-W142, 2009-W143, 2009-W144, 2009-W146 & 2009-W149 -- P/2009 U6, C/2009 U3, C/2009 T3, P/2009 T2, P/2009 S1, P/2009 Q5, P/2009 Q4, C/2009 O4, C/2006 OF2, 94P, 81P, 29P
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2009-W143, 2009-W144 & 2009-W149 -- C/2009 U3, C/2009 T3, 94P
A77Chante-Perdrix Obs. in France, 8 in MPECs 2009-W139, 2009-W146, 2009-W147, 2009-W148 & 2009-W149 -- C/2009 W2, P/2009 W1, P/2009 U6, P/2009 S1, C/2008 P1, C/2007 Q3, 81P, 29P
J01Cielo Profundo Obs. in Spain, 4 in MPECs 2009-W142 & 2009-W149 -- P/2009 T2, 157P, 127P, 81P
850Cordell-Lorenz Obs. in Tennessee, 6 in MPECs 2009-W143, 2009-W147, 2009-W148 & 2009-W149 -- C/2009 W2, P/2009 W1, C/2009 T3, P/2009 Q4, 226P, 81P
372Geisei Obs. in Japan, 1 in MPEC 2009-W145 -- C/2009 U5
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-W149 -- 64P
442Gualba Obs. in Spain, 1 in MPEC 2009-W149 -- 29P
355Hadano Obs. in Japan, 1 in MPEC 2009-W142 -- P/2009 T2
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2009-W149 -- C/2006 W3
J28Jaen Obs. in Spain, 1 in MPEC 2009-W149 -- C/2008 S3
415Kambah Obs. in the Australian Capital Territory, 1 in MPEC 2009-W141 -- C/2009 T1
400Kitami Obs. in Japan, 8 in MPECs 2009-W142, 2009-W143, 2009-W147 & 2009-W149 -- P/2009 W1, C/2009 T3, P/2009 T2, C/2008 S3, C/2008 P1, C/2007 N3, 127P, 30P
D95Kurihara Obs., 1 in MPEC 2009-W149 -- C/2006 W3
J75La Sagra Obs. in Spain, 1 in MPEC 2009-W144 -- C/2009 U3
J38La Vara Obs. in Spain, 1 in MPEC 2009-W149 -- C/2006 W3
C10Maisoncelles Obs., 3 in MPEC 2009-W149 -- 217P, 118P, 29P
232Masquefa Obs. in Spain, 4 in MPEC 2009-W149 -- C/2007 N3, 217P, 30P, 29P
932McCarthy Obs. in Connecticut, 3 in MPEC 2009-W138 -- 2009 UV18, 2006 KZ37, 2005 RQ6
213Montcabre Obs. in Spain, 4 in MPEC 2009-W149 -- P/2009 Q4, 217P, 81P, 29P
945Monte Deva Obs. in Spain, 3 in MPEC 2009-W149 -- 217P, 118P, 30P
900Moriyama Obs. in Japan, 4 in MPECs 2009-W142, 2009-W143, 2009-W144 & 2009-W149 -- C/2009 U3, C/2009 T3, P/2009 T2, C/2009 F6
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2009-W143, 2009-W144, 2009-W148 & 2009-W149 -- C/2009 W2, C/2009 U3, C/2009 T3, 64P, 30P
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2009-W140 -- 2009 SX1
J47Nazaret Obs. in Spain, 22 in MPECs 2009-W138, 2009-W142, 2009-W143, 2009-W144 & 2009-W149 -- C/2009 U3, C/2009 T3, P/2009 T2, P/2009 Q4, C/2009 P2, C/2008 Q3, C/2008 P1, C/2007 Q3, C/2007 N3, C/2006 W3, C/2006 OF2, 4015, 217P, 169P, 137P, 127P, 94P, 88P, 81P, 43P, 29P, 22P
583Odessa-Mayaki Obs., 3 in MPEC 2009-W149 -- C/2007 Q3, 217P, 81P
D92Osaki Obs. in Japan, 4 in MPEC 2009-W149 -- C/2006 W3, 169P, 157P, 43P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 12 in MPECs 2009-W142, 2009-W143, 2009-W144, 2009-W145, 2009-W146, 2009-W147 & 2009-W149 -- P/2009 W1, P/2009 U6, C/2009 U5, C/2009 U3, C/2009 T3, P/2009 T2, P/2009 Q4, 217P, 137P, 118P, 30P, 29P
B58Polaris Obs. in Hungary, 2 in MPEC 2009-W149 -- C/2007 Q3, 81P
H06RAS Obs. Mayhill in New Mexico, 10 in MPECs 2009-W142, 2009-W143, 2009-W145 & 2009-W149 -- C/2009 U5, C/2009 T3, P/2009 T2, P/2009 Q4, C/2009 F6, C/2006 OF2, 94P, 88P, 64P, 43P
D90RAS Obs. Moorook in South Australia, 1 in MPEC 2009-W149 -- C/2009 O4
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2009-W138 -- 2009 WM1
473Remanzacco Obs. in Italy, 4 in MPECs 2009-W142, 2009-W144 & 2009-W149 -- C/2009 U3, P/2009 T2, 127P, 22P
939Rodeno Obs. in Spain, 7 in MPECs 2009-W142 & 2009-W149 -- P/2009 T2, C/2008 P1, C/2006 W3, C/2006 Q1, 203P, 157P, 118P
B56Sant Pere Obs. in Spain, 2 in MPEC 2009-W149 -- C/2006 W3, 22P
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2009-W149 -- 88P
204Schiaparelli Obs. in Italy, 1 in MPEC 2009-W149 -- C/2006 Q1
E12Siding Spring Survey (SSS) in New South Wales, 13 in MPEC 2009-W138 -- 2009 WN, 2009 WM139, 2009 VZ, 2009 UW2, 96590, 86326, 85818, 66146, 27346, 202683, 177016, 10563, 8566
071Smolyan Obs. in Bulgaria, 6 in MPEC 2009-W149 -- C/2007 Q3, C/2006 W3, C/2006 OF2, 157P, 81P, 22P
691Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2009-W144 & 2009-W149 -- C/2009 U3, C/2007 N3, 203P
B18Terskol Obs. in Russia, 3 in MPECs 2009-W145, 2009-W147 & 2009-W149 -- P/2009 W1, C/2009 U5, C/2009 P2
H10Tzec Maun Obs. Mayhill in New Mexico, 7 in MPECs 2009-W143, 2009-W144, 2009-W148 & 2009-W149 -- C/2009 W2, C/2009 U3, C/2009 T3, C/2008 Q3, 217P, 118P, 81P
D25Tzec Maun Obs. Pingelly in Western Australia, 4 in MPECs 2009-W141, 2009-W146 & 2009-W149 -- P/2009 U6, C/2009 T1, P/2009 Q4, 118P
A92Urseanu Obs. in Romania, 1 in MPEC 2009-W149 -- 217P
H47Vicksburg Obs. in Mississippi, 9 in MPEC 2009-W149 -- P/2009 Q4, C/2007 Q3, C/2006 OF2, 217P, 203P, 118P, 81P, 30P, 29P
367Yatsuka Obs. in Japan, 4 in MPECs 2009-W142, 2009-W143 & 2009-W149 -- C/2009 T3, P/2009 T2, C/2006 W3, 88P
A79Zvezdno Obshtestvo Obs. in Bulgaria, 2 in MPECs 2009-W146 & 2009-W147 -- P/2009 W1, P/2009 U6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 November '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2304 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 WF106JPL Sentry15002015-207321.0e-09-5.24-5.250JPL: "Analysis based on 35 observations spanning 3.9680 days (2009-Nov-25.40833 to 2009-Nov-29.37633)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
NEODyS1500R E M O V E D-
2009 WX51JPL Sentry15002048-206827.5e-10-6.57-6.630JPL: "Analysis based on 46 observations spanning 6.9933 days (2009-Nov-22.24934 to 2009-Nov-29.24263)." Diameter approximately 0.326 km. from mean, weighted H=20.1.
NEODyS1500204813.33e-10-6.83-6.830NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2009/11/22.250 to 2009/11/29.243."
2009 WM1JPL Sentry1500203217.6e-07-3.53-3.530JPL: "Analysis based on 75 observations spanning 12.267 days (2009-Nov-17.4641 to 2009-Nov-29.73116)." Diameter approximately 0.270 km. from mean, weighted H=20.4.
NEODyS15002067-207928.94e-08-4.92-4.970NEODyS: "Based on 75 optical observations (of which 0 are rejected as outliers) from 2009/11/17.465 to 2009/11/29.732."

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 30 November '09

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

1744Grabbed MPEC 2009-W146 - Comet P/2009 U6 (LINEAR) - see above
Grabbed MPEC 2009-W147 - Comet P/2009 W1 (Hill) - see above
Grabbed MPEC 2009-W148 - Comet C/2009 W2 (Boattini) - see above
Grabbed MPEC 2009-W149 - Observations of Comets - see above
1639Grabbed MPEC 2009-W139 - Comet P/2009 S1 (Gibbs) - see above
Grabbed MPEC 2009-W140 - 2009 SX1 - see above
Grabbed MPEC 2009-W141 - Comet C/2009 T1 (McNaught) - see above
Grabbed MPEC 2009-W142 - Comet P/2009 T2 (La Sagra) - see above
Grabbed MPEC 2009-W143 - Comet C/2009 T3 (LINEAR) - see above
Grabbed MPEC 2009-W144 - Comet C/2009 U3 (Hill) - see above
Grabbed MPEC 2009-W145 - Comet C/2009 U5 (Grauer) - see above
1500Noted that JPL Sentry has updated its 2009 WF106 risk assessment - see above
Noted that NEODyS has removed 2009 WF106 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 WM1 risk assessment - see above
Noted that NEODyS has updated its 2009 WM1 risk assessment - see above
Noted that JPL Sentry has updated its 2009 WX51 risk assessment - see above
Noted that NEODyS has updated its 2009 WX51 risk assessment - see above
Grabbed MPEC 2009-W138 - Daily Orbit Update - see above