Contents  on 8 October '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.

NEOCP Activity  on 8 October '11

The MPC's NEO Confirmation Page has 4 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four objects listed. Of these, one was a "one nighter."

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 8 October '11

Minor Planet Electronic Circulars

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


MPEC 2011-T39 - "19:14 UT" - Observations and Orbits of Comets


<< DOU on 8 Oct. '11 >>  MPEC 2011-T38 - "06:07 UT" - Daily Orbit Update

Observers  on 8 October '11

A total of 74 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 6 in MPEC 2011-T39 -- P/2011 Q3, C/2009 Y1, C/2008 FK75, 78P, 48P, 9P
H21Astronomical Research Obs. Westfield in Illinois, 18 in MPEC 2011-T38 -- 2011 TL5, 2011 TK5, 2011 TK, 2011 TC4, 2011 TB4, 2011 SS25, 2011 SO25, 2011 SL102, 2011 RJ1, 2011 LC19, 2011 HC36, 2009 QZ6, 2009 QF31, 2006 SV134, 2006 FJ9, 2005 NX44, 2004 JO2, 2003 TM1
B75Betelgeuse Station in Italy, 4 in MPEC 2011-T39 -- C/2011 L3, C/2009 P1, 213P, 78P
I99Blanquita Obs. in Spain, 2 in MPEC 2011-T39 -- C/2009 P1, 78P
B96Brixiis Obs. in Belgium, 12 in MPEC 2011-T39 -- C/2011 L3, C/2010 S1, C/2010 G2, C/2009 S3, C/2009 P1, C/2008 FK75, 213P, 131P, 78P, 65P, 45P, 36P
215Buchloe Obs. in Germany, 1 in MPEC 2011-T39 -- P/2010 T1
235CAST Obs. in Italy, 2 in MPEC 2011-T39 -- C/2009 P1, 213P
B20Carmelita Obs. in Spain, 1 in MPEC 2011-T39 -- 45P
B53Casal Lumbroso Obs. in Italy, 2 in MPEC 2011-T39 -- C/2009 P1, 45P
B66Casasco Obs. in Italy, 6 in MPEC 2011-T39 -- C/2010 S1, C/2009 P1, C/2006 S3, 213P, 78P, 21P
I75Castellon Obs., 1 in MPEC 2011-T39 -- 78P
160Castelmartini Obs. in Italy, 9 in MPECs 2011-T38 & 2011-T39 -- 2011 OV4, 2011 HC36, C/2009 P1, 2004 SV55, 1991 TF3, 276274, 213P, 131P, 78P
703Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2011-T39 -- P/2011 Q3, 215P, 131P, 78P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPEC 2011-T38 -- 2011 TG2, 2011 TA4
J01Cielo Profundo Obs. in Spain, 10 in MPEC 2011-T39 -- C/2011 S2, P/2011 R3, C/2011 R1, P/2011 Q3, P/2010 JC81, C/2010 G2, C/2008 FK75, 213P, 164P, 49P
C13Como Obs. in Italy, 1 in MPEC 2011-T39 -- C/2009 P1
850Cordell-Lorenz Obs. in Tennessee, 7 in MPEC 2011-T39 -- C/2011 S2, P/2011 R3, C/2011 R1, C/2009 P1, C/2008 S3, 164P, 21P
B50Corner Obs. in Germany, 4 in MPECs 2011-T38 & 2011-T39 -- C/2009 P1, 1036, 213P, 78P
958Dax Obs. in France, 25 in MPEC 2011-T39 -- C/2011 S2, P/2011 R3, P/2011 R2, C/2011 R1, P/2011 Q3, C/2011 L3, C/2010 S1, C/2010 R1, C/2010 G2, C/2009 Y1, C/2009 P1, C/2008 S3, C/2008 FK75, C/2006 S3, 213P, 164P, 130P, 115P, 78P, 65P, 49P, 48P, 45P, 36P, 9P
F65$Ernesto Guido in Italy via Faulkes Telescope North in Hawaii, 1 in MPEC 2011-T39 -- P/2011 P1
I88Fuensanta de Martos Obs., 1 in MPEC 2011-T39 -- 78P
C73Galati Obs., 1 in MPEC 2011-T39 -- C/2010 S1
372Geisei Obs. in Japan, 3 in MPEC 2011-T39 -- P/2011 Q3, C/2009 P1, 213P
379Hamamatsu-Yuto Obs. in Japan, 3 in MPECs 2011-T38 & 2011-T39 -- C/2009 P1, 2000 SP43, 78P
C43Hoyerswerda Obs., 1 in MPEC 2011-T39 -- 78P
I16IAA-AI Atacama in Chile, 1 in MPEC 2011-T39 -- P/2011 N1
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2011-T38 -- 85628
987Isle of Man Obs. on the Isle of Man, 3 in MPEC 2011-T39 -- C/2009 P1, 213P, 78P
C32Ka-Dar Obs. TAU Station in Russia, 12 in MPEC 2011-T39 -- C/2011 S1, P/2011 R3, C/2011 L3, C/2011 C1, P/2010 U1, C/2010 R1, C/2009 T1, 213P, 164P, 163P, 97P, 77P
585Kiev Comet Station in the Ukraine, 12 in MPEC 2011-T39 -- P/2011 R3, P/2011 R2, C/2011 R1, P/2011 Q3, C/2011 L3, C/2007 Q3, C/2006 S3, 213P, 130P, 78P, 49P, 45P
046Klet Obs. in the Czech Republic, 6 in MPEC 2011-T39 -- P/2011 R2, P/2011 Q3, C/2010 S1, C/2008 S3, 213P, 78P
C04Kramatorsk Obs. in the Ukraine, 2 in MPEC 2011-T39 -- C/2011 S2, 45P
D95Kurihara Obs. in Japan, 10 in MPEC 2011-T39 -- P/2011 R2, C/2010 S1, P/2010 JC81, C/2010 G2, C/2009 Y1, C/2008 S3, 213P, 49P, 45P, 9P
704LINEAR in New Mexico, 15 in MPECs 2011-T38 & 2011-T39 -- 2011 SS25, C/2011 S2, P/2011 R2, 2011 QE38, C/2008 S3, 2006 SQ78, 2000 SP43, 39572, 37336, 283460, 16834, 163081, 3691, 242P, 215P
J75La Sagra Obs. in Spain, 1 in MPEC 2011-T38 -- 2011 SO32
J38La Vara Obs. in Spain, 5 in MPEC 2011-T39 -- C/2009 Y1, C/2009 P1, C/2008 FK75, 213P, 9P
B33Libbiano Obs. in Italy, 1 in MPEC 2011-T39 -- 36P
J59Linceo Obs. in Spain, 2 in MPEC 2011-T39 -- 213P, 78P
I36Los Campitos Obs. in Argentina, 1 in MPEC 2011-T39 -- 48P
130Lumezzane Obs. in Italy, 2 in MPEC 2011-T39 -- C/2011 R1, P/2011 Q3
B82Maidbronn Obs. in Germany, 6 in MPEC 2011-T39 -- C/2011 F1, C/2010 S1, C/2009 P1, C/2008 FK75, 158P, 115P
C10Maisoncelles Obs. in France, 15 in MPEC 2011-T39 -- C/2011 S2, P/2011 R3, P/2010 JC81, C/2010 G2, C/2009 P1, 244P, 242P, 213P, 176P, 78P, 65P, 49P, 45P, 36P, 9P
152Moletai Obs. in Lithuania, 3 in MPEC 2011-T39 -- C/2009 P1, 213P, 45P
213Montcabre Obs. in Spain, 5 in MPEC 2011-T39 -- P/2011 R3, C/2009 P1, 242P, 213P, 45P
945Monte Deva Obs. in Spain, 6 in MPEC 2011-T39 -- C/2011 R1, C/2010 S1, C/2010 G2, C/2009 P1, 213P, 78P
108Montelupo Obs. in Italy, 1 in MPEC 2011-T39 -- 78P
D81Nagano Obs. in Japan, 2 in MPEC 2011-T39 -- 49P, 45P
I89Nerpio Obs. in Italy, 2 in MPEC 2011-T39 -- C/2011 S2, 49P
A24New Millennium Obs. in Italy, 18 in MPECs 2011-T38 & 2011-T39 -- 2011 OV4, 2011 OQ5, 2011 KN9, 2011 HC36, C/2009 P1, 2006 SV134, 2006 SQ78, 2000 SH8, 96189, 85804, 37336, 285625, 276274, 275545, 20086, 16960, 159399, 78P
C47Nonndorf Obs., 3 in MPEC 2011-T39 -- C/2010 S1, C/2008 S3, 78P
583Odessa-Mayaki Obs. in the Ukraine, 2 in MPEC 2011-T39 -- 213P, 78P
C23Olmen Obs. in Belgium, 10 in MPEC 2011-T39 -- P/2011 R3, C/2011 R1, C/2010 S1, P/2010 JC81, C/2008 S3, 213P, 78P, 49P, 45P, 36P
J52Pinsoro Obs. in Spain, 9 in MPEC 2011-T39 -- P/2011 R2, C/2010 S1, C/2010 G2, C/2009 P1, C/2008 FK75, 213P, 130P, 78P, 45P
J53Posadas Obs. in Spain, 4 in MPEC 2011-T39 -- C/2010 S1, C/2009 P1, 213P, 78P
D29Purple Mtn. Obs. Xuyi Station in China, 2 in MPEC 2011-T38 -- 2011 SR69, 2011 SP68
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 8 in MPEC 2011-T39 -- C/2011 S2, P/2011 R3, P/2011 Q3, P/2011 P1, C/2011 A3, C/2009 Y1, 45P, 9P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 7 in MPEC 2011-T39 -- C/2011 O1, P/2011 JB15, C/2009 F4, 158P, 74P, 48P, 36P
E03`Kevin Hills in England via RAS Obs. Victoria in Victoria, 3 in MPECs 2011-T38 & 2011-T39 -- 2011 TG2, C/2011 Q2, C/2009 F4
939Rodeno Obs. in Spain, 7 in MPEC 2011-T39 -- C/2011 R1, C/2010 S1, C/2010 G2, C/2009 P1, 213P, 130P, 78P
461SZTE Asteroid Program in Hungary, 2 in MPEC 2011-T39 -- C/2011 S2, 213P
104San Marcello Pistoiese Obs. in Italy, 3 in MPEC 2011-T39 -- C/2011 L3, C/2009 P1, 36P
C71Sant Marti Sesgueioles Obs., 5 in MPEC 2011-T39 -- C/2008 S3, 244P, 131P, 78P, 49P
B56Sant Pere Obs. in Spain, 1 in MPEC 2011-T39 -- C/2009 P1
510Siegen Obs. in Germany, 3 in MPEC 2011-T39 -- C/2009 P1, 213P, 45P
645Sloan Digital Sky Survey (SDSS) in New Mexico, 75 in MPEC 2011-T38 -- 2010 JU39, 2010 DJ56, 2009 ST103, 2009 SG2, 2009 SB, 2008 UD1, 2008 SH82, 2008 RV, 2008 RG1, 2008 DG5, 2007 TD71, 2007 LQ19, 2007 LE, 2007 GS3, 2007 FA, 2006 VQ13, 2006 UF17, 2006 KM103, 2006 HD2, 2005 YS, 2005 NB7, 2005 FE3, 2005 EJ225, 2005 CZ36, 2005 CL, 2004 XL35, 2004 VC17, 2004 UL, 2004 UE, 2004 TG10, 2004 RY109, 2004 HC39, 2004 FY31, 2003 WY25, 2003 TR9, 2003 MS2, 2003 AD23, 2003 AA3, 2002 PE130, 2002 JE9, 2001 VB76, 2001 TD45, 2001 SZ269, 2001 QC34, 2001 GQ2, 2000 UG11, 2000 SP43, 2000 EU70, 2000 CM33, 1999 SO5, 1998 QA1, 1996 FO3, 1995 YR1, 90416, 90403, 86039, 85990, 85989, 53429, 53319, 267494, 267337, 228368, 22753, 216258, 206910, 205744, 196625, 163373, 162825, 162695, 7335, 5693, 5189, 4183
A97Stammersdorf Obs. in Austria, 1 in MPEC 2011-T39 -- C/2009 P1
A71Stixendorf Obs. in Austria, 5 in MPEC 2011-T39 -- C/2011 S2, P/2011 R3, C/2010 G2, 49P, 45P
C35Terrassa Obs., 3 in MPEC 2011-T39 -- C/2010 G2, C/2008 S3, C/2007 Q3
B51Vallauris Obs. in France, 13 in MPEC 2011-T39 -- P/2011 R3, P/2011 R2, P/2011 Q3, P/2011 P1, C/2010 S1, C/2009 P1, C/2008 S3, C/2008 FK75, 213P, 158P, 78P, 65P, 49P
H47Vicksburg Obs. in Mississippi, 11 in MPEC 2011-T39 -- P/2011 R3, C/2011 R1, C/2010 G2, C/2009 P1, 242P, 213P, 130P, 78P, 65P, 49P, 48P
B42Vitebsk Obs. in Belarus, 3 in MPEC 2011-T39 -- 213P, 131P, 78P
C75Whitestar Obs., 1 in MPEC 2011-T39 -- P/2011 R3
C42Xingming Obs. in China, 1 in MPEC 2011-T39 -- C/2011 S2
367Yatsuka Obs. in Japan, 13 in MPEC 2011-T39 -- C/2011 S2, P/2011 R2, C/2011 L3, C/2011 F1, C/2011 A3, C/2010 S1, C/2009 Y1, C/2009 P1, C/2008 FK75, 213P, 130P, 78P, 9P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 8 October '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 CLOMON 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 TQ8JPL Sentry0002210614.1e-09-8.31-8.310JPL: "Analysis based on 11 observations spanning 1.0213 days (2011-Oct-06.28177 to 2011-Oct-07.303108)." Diameter approximately 0.045 km. from mean, weighted H=24.4.
2011 TOJPL Sentry00022049-2088141.3e-05-5.62-5.770JPL: "Analysis based on 37 observations spanning 3.8771 days (2011-Oct-01.23672 to 2011-Oct-05.11386)." Diameter approximately 0.019 km. from mean, weighted H=26.3.
NEODyS00022053-2089191.32e-05-5.62-5.780NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2011-10-01.237 to 2011-10-05.115."
2011 TKJPL Sentry1510210013.8e-08-5.75-5.750JPL #2 for the day: "Analysis based on 47 observations spanning 5.8895 days (2011-Oct-01.34764 to 2011-Oct-07.237156)." Diameter approximately 0.190 km. from mean, weighted H=21.2.
NEODyS00022061-206111.4e-10-7.95-7.950NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2011-10-01.348 to 2011-10-06.124."
2011 TBJPL Sentry0002R E M O V E DJPL: Risk listing removed at 0929 UTC 4 Oct..
2011 ST232JPL Sentry0002R E M O V E DJPL: Risk listing removed at 0929 UTC 4 Oct..
2011 SE191JPL Sentry0002209811.6e-08-7.99-7.990JPL: "Analysis based on 36 observations spanning 2.8476 days (2011-Sep-30.41481 to 2011-Oct-03.26239)." Diameter approximately 0.032 km. from mean, weighted H=25.1.
NEODyS00022079-207911.98e-11-10.81-10.810NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2011-09-30.416 to 2011-10-03.263."
2011 SO189JPL Sentry00022056-2090141.1e-04-4.73-5.070JPL: "Analysis based on 31 observations spanning 6.9160 days (2011-Sep-29.42352 to 2011-Oct-06.339478)." Diameter approximately 0.017 km. from mean, weighted H=26.5.
NEODyS00022056-2090141.1e-04-4.72-5.070NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2011-09-29.424 to 2011-10-06.340."
2011 SM173JPL Sentry00022058-208957.0e-05-5.42-5.450JPL: "Analysis based on 31 observations spanning 1.2283 days (2011-Sep-29.22504 to 2011-Sep-30.453311)." Diameter approximately 0.009 km. from mean, weighted H=27.8.
NEODyS00022058-208973.64e-05-5.69-5.710NEODyS: "Based on 32 optical observations (of which 3 are rejected as outliers) from 2011-09-29.226 to 2011-09-30.454."
2011 SE97JPL Sentry0002209515.1e-08-7.21-7.210JPL: "Analysis based on 67 observations spanning 8.9120 days (2011-Sep-26.35341 to 2011-Oct-05.26536)." Diameter approximately 0.039 km. from mean, weighted H=24.7.
2011 SM68JPL Sentry0002R E M O V E DJPL: Risk listing removed at 0857 UTC 7 Oct..
NEODyS0002R 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 8 October '11

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

2016Grabbed MPEC 2011-T39 - Observations and Orbits of Comets - see above
1510Noted that JPL Sentry has updated its 2011 TK risk assessment - see above
Grabbed MPEC 2011-T38 - Daily Orbit Update - see above
0002Noted that JPL Sentry has updated its 2011 SE191 risk assessment - see above
Noted that NEODyS has posted 2011 SE191 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 SE97 risk assessment - see above
Noted that JPL Sentry has updated its 2011 SM173 risk assessment - see above
Noted that NEODyS has updated its 2011 SM173 risk assessment - see above
Noted that JPL Sentry has removed 2011 SM68 as an impact risk - see above
Noted that NEODyS has removed 2011 SM68 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 SO189 risk assessment - see above
Noted that NEODyS has updated its 2011 SO189 risk assessment - see above
Noted that JPL Sentry has removed 2011 ST232 as an impact risk - see above
Noted that JPL Sentry has removed 2011 TB as an impact risk - see above
Noted that JPL Sentry has updated its 2011 TK risk assessment - see above
Noted that NEODyS has updated its 2011 TK risk assessment - see above
Noted that JPL Sentry has updated its 2011 TO risk assessment - see above
Noted that NEODyS has posted 2011 TO as an impact risk - see above
Noted that JPL Sentry has posted 2011 TQ8 as an impact risk - see above