Contents  on 7 November '11

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.

Radar Astrometry  on 7 November '11

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 0104 UTC when the database was dated 6 Nov.

NEOCP Activity  on 7 November '11

The MPC's NEO Confirmation Page has 1 listing

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one object listed. This was a "one nighter." The Tracking News counted a total of three listings on the NEOCP on this day.

New MPECs  on 7 November '11

Minor Planet Electronic Circulars

There were two MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2011-V31 - "23:15 UT" - Observations and Orbits of Comets


<< DOU on 7 Nov. '11 >>  MPEC 2011-V30 - "06:08 UT" - Daily Orbit Update

Observers  on 7 November '11

A total of 80 observers appeared in this day's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 11 in MPEC 2011-V31 -- C/2010 S1, C/2010 G2, C/2010 FB87, C/2009 Y1, C/2009 K5, 244P, 242P, 164P, 74P, 49P, 45P
C07Anysllum Obs. in Spain, 4 in MPEC 2011-V31 -- C/2010 S1, C/2009 P1, 213P, 78P
C60Argelander Institute for Astronomy Obs. in Germany, 4 in MPECs 2011-V30 & 2011-V31 -- P/2010 JC81, C/2010 FB87, 154302, 244P
H21Astronomical Research Obs. Westfield in Illinois, 13 in MPEC 2011-V30 -- 2011 VS5, 2011 VB, 2011 US63, 2011 UQ91, 2011 UP63, 2011 UG256, 2011 TN9, 2011 SR69, 2011 SL102, 2011 PW6, 2007 VQ4, 2007 VH186, 2004 FH11
C86Blanes Obs., 1 in MPEC 2011-V31 -- C/2009 P1
I99Blanquita Obs. in Spain, 2 in MPEC 2011-V31 -- C/2009 P1, 78P
B59Borken Obs. in Germany, 1 in MPEC 2011-V31 -- C/2010 G2
B96Brixiis Obs. in Belgium, 7 in MPEC 2011-V31 -- C/2010 G2, C/2009 P1, C/2008 FK75, 213P, 78P, 65P, 49P
215Buchloe Obs. in Germany, 1 in MPEC 2011-V31 -- C/2011 S2
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2011-V31 -- P/2011 R3, P/2011 P1, 242P
693Catalina Station in Arizona, 1 in MPEC 2011-V31 -- P/2010 T1
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 12 in MPEC 2011-V30 -- 2011 UY255, 2011 SO32, 2011 SJ68, 2007 YF1, 2007 WU4, 2007 SP6, 2007 LQ19, 2004 QJ7, 2004 FF29, 2003 FB, 2003 AA, 136897
J01Cielo Profundo Obs. in Spain, 5 in MPEC 2011-V31 -- P/2011 U2, P/2010 JC81, C/2010 G2, 213P, 78P
850Cordell-Lorenz Obs. in Tennessee, 2 in MPEC 2011-V31 -- C/2010 G2, C/2009 P1
B50Corner Obs. in Germany, 1 in MPEC 2011-V31 -- C/2009 P1
958Dax Obs. in France, 22 in MPEC 2011-V31 -- C/2011 S2, P/2011 R2, C/2011 R1, P/2011 Q3, C/2011 L3, C/2011 F1, C/2010 S1, P/2010 JC81, C/2010 G2, C/2009 P1, C/2008 S3, C/2008 FK75, C/2006 S3, 213P, 164P, 130P, 78P, 65P, 49P, 48P, 45P, 9P
C76Estels Obs., 1 in MPEC 2011-V31 -- C/2009 P1
157Frasso Sabino Obs. in Italy, 1 in MPEC 2011-V31 -- P/2011 U2
372Geisei Obs. in Japan, 4 in MPEC 2011-V31 -- P/2011 R3, P/2011 P1, C/2009 Y1, 45P
252Goldstone DSS-13 34m antenna in southern California, 1 in radar -- 2005 YU55
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 2005 YU55
E16Grove Creek Obs. in New South Wales, 7 in MPEC 2011-V31 -- C/2011 R1, C/2009 Y1, 213P, 130P, 78P, 65P, 48P
A17Guidestar Obs. in Germany, 4 in MPEC 2011-V30 -- 2011 VS5, 2011 UT91, 2011 UA, 2011 TN9
I82Guimar Obs., 2 in MPEC 2011-V31 -- C/2008 FK75, 213P
355Hadano Obs. in Japan, 6 in MPEC 2011-V31 -- P/2011 R2, C/2010 S1, C/2010 G2, C/2009 P1, 242P, 78P
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2011-V31 -- C/2009 P1, 78P
511Haute Provence Obs. in Germany, 1 in MPEC 2011-V31 -- 78P
750Hobbs Obs. in Wisconsin, 1 in MPEC 2011-V31 -- C/2009 P1
C43Hoyerswerda Obs., 1 in MPEC 2011-V31 -- C/2010 G2
J37Huelva Obs. in Spain, 1 in MPEC 2011-V30 -- 2011 LC19
I16IAA-AI Atacama in Chile, 1 in MPEC 2011-V31 -- P/2011 N1
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2011-V31 -- C/2009 Y1
C32Ka-Dar Obs. TAU Station in Russia, 42 in MPEC 2011-V31 -- P/2011 UA134, C/2011 U3, P/2011 U2, P/2011 U1, C/2011 S2, C/2011 S1, P/2011 R3, P/2011 R2, P/2011 Q3, P/2011 P1, C/2011 L3, C/2011 G1, C/2011 F1, C/2011 C1, C/2010 S1, P/2010 JC81, C/2010 FB87, C/2009 S3, C/2009 K5, C/2008 S3, C/2008 FK75, 249P, 244P, 243P, 242P, 213P, 176P, 164P, 163P, 131P, 130P, 117P, 97P, 78P, 69P, 65P, 60P, 49P, 45P, 36P, 21P, 9P
585Kiev Comet Station in the Ukraine, 4 in MPEC 2011-V31 -- C/2011 R1, 213P, 131P, 78P
C06Krasnoyarsk Obs. in Russia, 1 in MPEC 2011-V31 -- C/2009 P1
D95Kurihara Obs. in Japan, 12 in MPEC 2011-V31 -- P/2011 R3, P/2011 R2, C/2010 S1, P/2010 JC81, C/2009 Y1, C/2009 P1, 130P, 78P, 49P, 48P, 45P, 21P
704LINEAR in New Mexico, 5 in MPEC 2011-V31 -- P/2011 R2, P/2011 P1, C/2008 S3, 242P, 215P
J31La Axarquia Obs. in Spain, 2 in MPEC 2011-V31 -- C/2010 G2, 78P
J38La Vara Obs. in Spain, 4 in MPEC 2011-V31 -- C/2010 S1, C/2010 G2, C/2008 FK75, 78P
B33Libbiano Obs. in Italy, 1 in MPEC 2011-V31 -- C/2010 G2
B82Maidbronn Obs. in Germany, 4 in MPEC 2011-V31 -- C/2010 S1, C/2009 P1, C/2008 FK75, 78P
C10Maisoncelles Obs. in France, 7 in MPEC 2011-V31 -- C/2011 S2, P/2011 R3, P/2011 P1, 244P, 176P, 78P, 45P
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2011-V31 -- C/2011 Q1
152Moletai Obs. in Lithuania, 1 in MPEC 2011-V31 -- C/2009 P1
213Montcabre Obs. in Spain, 5 in MPEC 2011-V31 -- C/2011 S2, C/2011 G1, P/2010 JC81, C/2010 G2, 49P
945Monte Deva Obs. in Spain, 6 in MPEC 2011-V31 -- C/2010 S1, C/2010 G2, C/2009 P1, C/2008 FK75, 213P, 78P
900Moriyama Obs. in Japan, 16 in MPEC 2011-V31 -- P/2011 R3, C/2011 R1, C/2010 S1, P/2010 JC81, C/2010 G2, C/2009 Y1, C/2009 P1, C/2008 S3, C/2008 FK75, 244P, 242P, 130P, 78P, 49P, 48P, 9P
G96Mt. Lemmon Survey (MLS) in Arizona, 9 in MPEC 2011-V31 -- P/2011 R3, C/2011 C1, P/2010 TO20, C/2008 S3, 237P, 223P, 215P, 129P, 65P
J93Mt. Tuffley Obs. in England, 1 in MPEC 2011-V31 -- 78P
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2011-V31 -- P/2010 T1
D81Nagano Obs. in Japan, 1 in MPEC 2011-V31 -- 213P
089Nikolaev Obs. in the Ukraine, 2 in MPEC 2011-V31 -- C/2009 P1, 78P
583Odessa-Mayaki Obs. in the Ukraine, 2 in MPEC 2011-V31 -- C/2010 G2, 78P
C23Olmen Obs. in Belgium, 7 in MPEC 2011-V31 -- C/2010 S1, C/2010 G2, C/2009 P1, C/2008 S3, 213P, 78P, 21P
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2011-V30 -- 2011 SL102
C72Palestrina Obs. in Italy, 1 in MPEC 2011-V31 -- C/2009 P1
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2011-V31 -- P/2011 R3, 215P, 164P, 65P
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2011-V31 -- 65P
B94Petrozavodsk Obs. in Russia, 6 in MPEC 2011-V31 -- C/2010 G2, C/2009 P1, 213P, 78P, 49P, 45P
J52Pinsoro Obs. in Spain, 3 in MPEC 2011-V31 -- C/2010 G2, 49P, 45P
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2011-V31 -- P/2011 U2
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 9 in MPEC 2011-V31 -- P/2011 V1, C/2011 U3, P/2011 U2, P/2011 U1, C/2011 S2, C/2011 J2, 176P, 97P, 69P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 3 in MPEC 2011-V31 -- P/2011 Q3, C/2009 F4, 78P
233San Vito Obs. in Italy, 3 in MPEC 2011-V31 -- C/2010 S1, C/2009 P1, C/2008 FK75
B56Sant Pere Obs. in Spain, 3 in MPEC 2011-V31 -- C/2011 R1, C/2008 FK75, 78P
204Schiaparelli Obs. in Italy, 10 in MPECs 2011-V30 & 2011-V31 -- 2011 UY114, 2011 UD21, 2011 UD115, 2011 SM68, 2011 PT1, 2011 OV4, 2011 OQ5, 2004 JO2, 215P, 163P
260'Maik Meyer in Germany using the Siding Spring Digitized Sky Survey in New South Wales, 1 in MPEC 2011-V31 -- P/2010 T1
510Siegen Obs. in Germany, 2 in MPEC 2011-V31 -- C/2011 S2, C/2009 P1
G68Sierra Stars Obs. in northern California, 1 in MPEC 2011-V31 -- C/2009 P1
691Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2011-V30 & 2011-V31 -- P/2011 P1, C/2010 U3, 2008 UX
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2011-V30 & 2011-V31 -- 2011 UZ63, 2011 UU106, 2011 UU, 2011 UT20, 2011 UG256, 2011 UA, P/2011 U2, P/2011 U1, 2011 TC4, 2011 SE248, 2011 HG
A71Stixendorf Obs. in Austria, 2 in MPEC 2011-V31 -- C/2009 P1, 21P
I40TRAPPIST in Chile, 1 in MPEC 2011-V31 -- C/2011 Q4
A98Taurus-1 Obs. in Belarus, 3 in MPEC 2011-V31 -- P/2011 R3, C/2011 F1, C/2010 G2
B51Vallauris Obs. in France, 7 in MPEC 2011-V31 -- C/2010 S1, C/2010 G2, C/2008 S3, 244P, 176P, 78P, 65P
H47Vicksburg Obs. in Mississippi, 13 in MPECs 2011-V30 & 2011-V31 -- C/2010 G2, C/2010 FB87, 2003 FH, 297418, 16816, 8567, 7341, 244P, 242P, 213P, 130P, 78P, 49P
B42Vitebsk Obs. in Belarus, 6 in MPEC 2011-V31 -- C/2010 S1, C/2008 S3, C/2008 FK75, 213P, 131P, 78P
C28Wellinghofen Obs. in Germany, 1 in MPEC 2011-V31 -- C/2009 P1
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2011-V30 -- 2011 UT91, 2011 SO25, 36236
367Yatsuka Obs. in Japan, 11 in MPEC 2011-V31 -- C/2011 R1, C/2011 F1, C/2010 S1, C/2010 G2, C/2009 P1, C/2008 S3, C/2006 S3, 213P, 78P, 48P, 21P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 November '11

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 CLOMON2 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
2011 UW158JPL Sentry20152046-2111834.7e-05-2.01-2.331JPL: "Analysis based on 60 observations spanning 10.050 days (2011-Oct-25.4186 to 2011-Nov-04.46858)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
2011 UD21JPL Sentry1602211113.0e-07-8.76-8.760JPL: "Analysis based on 75 observations spanning 14.687 days (2011-Oct-18.42484 to 2011-Nov-02.111371)." Diameter approximately 0.007 km. from mean, weighted H=28.5.

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 7 November '11

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

2359Grabbed MPEC 2011-V31 - Observations and Orbits of Comets - see above
2015Noted that JPL Sentry has updated its 2011 UW158 risk assessment - see above
1602Noted that JPL Sentry has updated its 2011 UD21 risk assessment - see above
Grabbed MPEC 2011-V30 - Daily Orbit Update - see above
0104Noted Radar Astrometry database update - see above