Contents  on 18 November '11

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NEOCP Activity  on 18 November '11

The MPC's NEO Confirmation Page has 21 listings

When last checked at 2239 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 21 objects listed. Of these, eight were "one nighters." The Tracking News counted a total of 31 listings on the NEOCP on this day.

New MPECs  on 18 November '11

Minor Planet Electronic Circulars

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


MPEC 2011-W22 - "23:00 UT" - 2011 WV2


MPEC 2011-W21 - "22:58 UT" - 2011 WU2


MPEC 2011-W20 - "22:56 UT" - 2011 WT2


MPEC 2011-W19 - "22:54 UT" - 2011 WS2


MPEC 2011-W18 - "22:52 UT" - 2011 VP12


MPEC 2011-W17 - "21:37 UT" - 2011 WR2


MPEC 2011-W16 - "18:03 UT" - Observations and Orbits of Comets


MPEC 2011-W15 - "17:39 UT" - 2011 WQ2


MPEC 2011-W14 - "17:37 UT" - 2011 WO2


MPEC 2011-W13 - "17:35 UT" - 2011 WN2


MPEC 2011-W12 - "17:33 UT" - 2011 WM2


MPEC 2011-W11 - "17:31 UT" - 2011 WL2


MPEC 2011-W10 - "17:29 UT" - 2011 WK2


<< DOU on 18 Nov. '11 >>  MPEC 2011-W09 - "06:04 UT" - Daily Orbit Update

Observers  on 18 November '11

A total of 74 observers appeared in this day's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 10 in MPEC 2011-W16 -- C/2011 S2, C/2011 L3, C/2011 G1, C/2010 G2, C/2005 L3, 253P, 164P, 65P, 49P, 45P
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2011-W16 -- 164P
C60Argelander Institute for Astronomy Obs. in Germany, 2 in MPEC 2011-W16 -- C/2010 S1, C/2008 FK75
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2011-W10, 2011-W12, 2011-W15, 2011-W19, 2011-W20 & 2011-W22 -- 2011 WV2, 2011 WT2, 2011 WS2, 2011 WQ2, 2011 WM2, 2011 WK2
C77Bernezzo Obs. in Italy, 1 in MPEC 2011-W09 -- 5143
C86Blanes Obs. in Spain, 4 in MPEC 2011-W16 -- C/2010 S1, C/2010 G2, C/2009 P1, 78P
B59Borken Obs. in Germany, 1 in MPEC 2011-W16 -- C/2010 G2
B96Brixiis Obs. in Belgium, 6 in MPEC 2011-W16 -- C/2010 S1, C/2009 P1, C/2008 S3, C/2008 FK75, 213P, 78P
215Buchloe Obs. in Germany, 7 in MPEC 2011-W16 -- C/2011 U3, C/2010 G2, 213P, 176P, 131P, 130P, 78P
160Castelmartini Obs. in Italy, 6 in MPEC 2011-W09 -- 302831, 297418, 219071, 209924, 208617, 7341
703Catalina Sky Survey (CSS) in Arizona, 15 in MPECs 2011-W09, 2011-W12, 2011-W16 & 2011-W19 -- 2011 WS2, 2011 WM2, P/2011 U2, 2007 WU4, 2005 XB1, 96744, 303262, 24475, 190208, 163081, 154302, 7092, 242P, 215P, 164P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 20 in MPECs 2011-W09, 2011-W11 & 2011-W12 -- 2011 WM2, 2011 WL2, 2011 WC, 2011 WA, 2011 VG9, 2011 VF9, 2011 UZ255, 2011 UU, 2011 SK16, 2011 QE14, 2011 LC19, 2009 VO24, 2008 SX245, 2008 GE1, 2007 SP6, 2007 LQ19, 2005 XM4, 2004 JO2, 2003 YS17, 2003 GW
J01Cielo Profundo Obs. in Spain, 3 in MPEC 2011-W16 -- C/2010 G2, 78P, 65P
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2011-W12 -- 2011 WM2
B50Corner Obs. in Germany, 1 in MPEC 2011-W16 -- C/2009 P1
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2011-W09 -- 302156
I39Cruz del Sur Obs. in Argentina, 1 in MPEC 2011-W11 -- 2011 WL2
958Dax Obs. in France, 1 in MPEC 2011-W16 -- P/2011 R3
448Desert Moon Obs. in New Mexico, 4 in MPEC 2011-W09 -- 2011 US63, 2003 YS17, 142563, 3988
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 2 in MPECs 2011-W09 & 2011-W11 -- 2011 WL2, 2011 WA
A27Eridanus Obs. in Germany, 1 in MPEC 2011-W09 -- 37336
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2011-W13 & 2011-W22 -- 2011 WV2, 2011 WN2
C73Galati Obs. in Romania, 3 in MPEC 2011-W09 -- 2011 WA, 39572, 208617
372Geisei Obs. in Japan, 4 in MPEC 2011-W16 -- C/2011 S2, C/2009 P1, 213P, 45P
203GiaGa Obs. in Italy, 1 in MPEC 2011-W16 -- C/2010 S1
J95Great Shefford Obs. in England, 6 in MPECs 2011-W13, 2011-W14, 2011-W17, 2011-W18, 2011-W19 & 2011-W22 -- 2011 WV2, 2011 WS2, 2011 WR2, 2011 WO2, 2011 WN2, 2011 VP12
379Hamamatsu-Yuto Obs. in Japan, 10 in MPECs 2011-W09 & 2011-W16 -- 2011 SR69, 2011 SL102, 2011 LC19, C/2009 P1, 2005 YU55, 2004 JO2, 37336, 170502, 154302, 2201
G47HillTopTop Obs., 1 in MPEC 2011-W09 -- 297418
246KLENOT in the Czech Republic, 2 in MPECs 2011-W12 & 2011-W13 -- 2011 WN2, 2011 WM2
C32Ka-Dar Obs. TAU Station in Russia, 8 in MPEC 2011-W16 -- P/2011 R3, 253P, 213P, 131P, 65P, 60P, 36P, 21P
585Kiev Comet Station in the Ukraine, 8 in MPEC 2011-W16 -- C/2011 S2, C/2011 G1, C/2010 G2, C/2009 P1, 253P, 244P, 78P, 49P
D95Kurihara Obs. in Japan, 2 in MPEC 2011-W16 -- C/2010 G2, C/2009 P1
704LINEAR in New Mexico, 25 in MPECs 2011-W09, 2011-W11, 2011-W15 & 2011-W16 -- 2011 WQ2, 2011 WL2, 2011 WA, 2011 UU106, P/2011 U2, 2011 SL102, 2011 OQ5, 2007 VH186, 2005 XB1, 2001 UE5, 85818, 42286, 302591, 285179, 162273, 138883, 136923, 4183, 2212, 1943, 254P, 244P, 242P, 213P, 130P
J14La Corte Obs. in the Canary Islands, 1 in MPEC 2011-W09 -- 4183
J38La Vara Obs. in Spain, 7 in MPEC 2011-W16 -- C/2010 S1, C/2010 G2, C/2009 P1, C/2008 FK75, 213P, 78P, 65P
H01Magdalena Ridge Obs. (MRO) in New Mexico, 12 in MPECs 2011-W09, 2011-W10, 2011-W11, 2011-W12, 2011-W13, 2011-W14, 2011-W15, 2011-W17, 2011-W19, 2011-W20, 2011-W21 & 2011-W22 -- 2011 WV2, 2011 WU2, 2011 WT2, 2011 WS2, 2011 WR2, 2011 WQ2, 2011 WO2, 2011 WN2, 2011 WM2, 2011 WL2, 2011 WK2, 2011 UD21
B82Maidbronn Obs. in Germany, 4 in MPEC 2011-W16 -- C/2010 S1, C/2009 S3, C/2009 P1, C/2008 FK75
C10Maisoncelles Obs. in France, 5 in MPEC 2011-W16 -- P/2011 P1, 176P, 131P, 95P, 78P
J40Malaga Obs. in Spain, 1 in MPEC 2011-W16 -- C/2010 G2
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2011-W16 -- P/2010 R2
118Modra Obs. in Slovakia, 3 in MPEC 2011-W16 -- C/2010 G2, 244P, 164P
A99Monte Baldo Obs. in Italy, 1 in MPEC 2011-W13 -- 2011 WN2
945Monte Deva Obs. in Spain, 2 in MPEC 2011-W16 -- C/2010 G2, 78P
900Moriyama Obs. in Japan, 4 in MPEC 2011-W16 -- C/2010 G2, 242P, 176P, 78P
G96Mt. Lemmon Survey (MLS) in Arizona, 16 in MPECs 2011-W09, 2011-W10, 2011-W13, 2011-W14, 2011-W16, 2011-W17, 2011-W18, 2011-W20, 2011-W21 & 2011-W22 -- 2011 WV2, 2011 WU2, 2011 WT2, 2011 WR2, 2011 WO2, 2011 WN2, 2011 WK2, 2011 VP12, C/2011 U3, 2009 HV2, 2004 JO2, 2001 UE5, 52768, 25916, 162273, 1943
E07Murrumbateman Obs. in New South Wales, 5 in MPEC 2011-W16 -- C/2011 R1, C/2010 B1, C/2009 Y1, 242P, 78P
566NEAT's GEODSS Haleakala telescope in Hawaii, 1 in MPEC 2011-W09 -- 2011 SD173
J47Nazaret Obs. in Spain, 3 in MPEC 2011-W16 -- C/2009 P1, 213P, 78P
C47Nonndorf Obs. in Austria, 1 in MPEC 2011-W09 -- 2005 YU55
J69North Obs. in England, 1 in MPEC 2011-W09 -- 2005 YU55
C23Olmen Obs. in Belgium, 9 in MPEC 2011-W16 -- C/2010 S1, C/2010 G2, C/2009 P1, C/2008 S3, C/2008 FK75, 213P, 78P, 65P, 21P
J43Oukaimeden Obs. in Morocco, 2 in MPECs 2011-W16 & 2011-W18 -- 2011 VP12, 78P
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2011-W09 -- 2011 EF17, 85709, 2212, 1943
586Pic du Midi Obs. in France, 5 in MPECs 2011-W09, 2011-W12 & 2011-W22 -- 2011 WV2, 2011 WM2, 2011 PW6, 2011 OV18, 175706
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 3 in MPEC 2011-W16 -- C/2011 S2, C/2010 G2, 49P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 13 in MPEC 2011-W16 -- P/2011 P1, C/2011 O1, P/2011 N1, C/2009 F4, 253P, 242P, 176P, 158P, 130P, 65P, 48P, 36P, 9P
071Rhozen Obs. in Bulgaria, 4 in MPEC 2011-W16 -- C/2010 S1, C/2009 P1, 213P, 78P
461SZTE Asteroid Program in Hungary, 1 in MPEC 2011-W09 -- 2005 YU55
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2011-W12 & 2011-W15 -- 2011 WQ2, 2011 WM2
233San Vito Obs. in Italy, 5 in MPECs 2011-W09 & 2011-W16 -- C/2010 S1, C/2008 FK75, 209924, 137084, 213P
H36Sandlot Obs. in Kansas, 5 in MPECs 2011-W09, 2011-W11, 2011-W12, 2011-W16 & 2011-W17 -- 2011 WR2, 2011 WM2, 2011 WL2, 2011 VB, 49P
B56Sant Pere Obs. in Spain, 4 in MPEC 2011-W16 -- C/2010 G2, C/2008 FK75, 78P, 49P
204Schiaparelli Obs. in Italy, 25 in MPECs 2011-W09, 2011-W11, 2011-W12, 2011-W13, 2011-W14, 2011-W16, 2011-W17, 2011-W19 & 2011-W22 -- 2011 WV2, 2011 WS2, 2011 WR2, 2011 WO2, 2011 WN2, 2011 WM2, 2011 WL2, 2011 VW5, 2011 VU5, 2011 UZ114, 2011 US63, P/2011 U2, 2011 RR12, P/2011 Q3, 2011 MD11, P/2010 TO20, C/2010 FB87, 2009 VO24, 2008 GE1, 2004 QB17, 254P, 242P, 176P, 131P, 49P
510Siegen Obs. in Germany, 2 in MPEC 2011-W16 -- C/2009 P1, 78P
G68Sierra Stars Obs. in northern California, 1 in MPEC 2011-W16 -- C/2010 G2
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2011-W09 -- 242216, 152941
291Spacewatch 1.8m telescope in Arizona, 30 in MPECs 2011-W09, 2011-W10, 2011-W11, 2011-W12, 2011-W13, 2011-W14, 2011-W15, 2011-W16, 2011-W17, 2011-W20 & 2011-W22 -- 2011 WV2, 2011 WT2, 2011 WR2, 2011 WQ2, 2011 WO2, 2011 WN2, 2011 WM2, 2011 WL2, 2011 WK2, 2011 WC, 2011 WA, 2011 VG9, 2011 VB, 2011 UZ63, 2011 UZ255, 2011 UY63, 2011 UX114, 2011 UW114, 2011 UU, 2011 UN20, 2011 UJ169, 2011 UH169, 2011 UE305, 2011 UA131, P/2011 U2, 2011 TP6, 2011 SH189, 2011 RJ1, 2011 LH21, 2005 LS3
I93St. Pardon de Conques Obs. in France, 4 in MPECs 2011-W12, 2011-W13, 2011-W19 & 2011-W22 -- 2011 WV2, 2011 WS2, 2011 WN2, 2011 WM2
I81Tarbatness Obs. in Scotland, 2 in MPEC 2011-W16 -- C/2010 S1, C/2010 G2
G69Thousand Oaks Obs. in southern California, 1 in MPEC 2011-W09 -- 2005 YU55
B51Vallauris Obs. in France, 8 in MPEC 2011-W16 -- P/2011 R3, P/2011 P1, P/2010 JC81, 213P, 176P, 78P, 65P, 49P
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2011-W16 -- 244P, 49P
367Yatsuka Obs. in Japan, 7 in MPEC 2011-W16 -- P/2011 R3, C/2010 S1, C/2010 G2, C/2009 P1, 213P, 78P, 48P
J08Zonalunar Obs. in Spain, 2 in MPEC 2011-W16 -- C/2009 P1, 78P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 November '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2236 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 WQ2JPL Sentry20012052-210461.8e-06-6.33-6.400JPL: "Analysis based on 18 observations spanning .89771 days (2011-Nov-17.38138 to 2011-Nov-18.27909)." Diameter approximately 0.020 km. from mean, weighted H=26.2.
2011 WL2JPL Sentry19102051-2108268.3e-06-3.26-3.320JPL: "Analysis based on 42 observations spanning 1.9398 days (2011-Nov-16.31883 to 2011-Nov-18.25862)." Diameter approximately 0.240 km. from mean, weighted H=20.7.
2011 VG9JPL Sentry16082085-2104102.1e-06-4.18-4.390JPL: "Analysis based on 33 observations spanning 2.8124 days (2011-Nov-15.37847 to 2011-Nov-18.19082)." Diameter approximately 0.120 km. from mean, weighted H=22.2.
NEODyS16082085-208633.17e-06-3.98-4.180NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2011-11-15.379 to 2011-11-18.192."
2011 UE305JPL Sentry16082107-210941.7e-06-4.23-4.300JPL: "Analysis based on 20 observations spanning 17.986 days (2011-Oct-30.46441 to 2011-Nov-17.45045)." Diameter approximately 0.170 km. from mean, weighted H=21.4.
NEODyS1608R E M O V E D-
2011 UZ255NEODyS16562066-208959.36e-06-4.24-4.280NEODyS: "Based on 79 optical observations (of which 0 are rejected as outliers) from 2011-10-30.447 to 2011-11-18.234."
JPL Sentry16082066-208931.4e-05-4.07-4.090JPL: "Analysis based on 79 observations spanning 18.788 days (2011-Oct-30.44574 to 2011-Nov-18.2335)." Diameter approximately 0.075 km. from mean, weighted H=23.3.
2011 UD21JPL Sentry1608R E M O V E DJPL: Risk listing removed at 0854 UTC.

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 18 November '11

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

2359Grabbed MPEC 2011-W18 - 2011 VP12 - see above
Grabbed MPEC 2011-W19 - 2011 WS2 - see above
Grabbed MPEC 2011-W20 - 2011 WT2 - see above
Grabbed MPEC 2011-W21 - 2011 WU2 - see above
Grabbed MPEC 2011-W22 - 2011 WV2 - see above
2140Grabbed MPEC 2011-W17 - 2011 WR2 - see above
2001Noted that JPL Sentry has posted 2011 WQ2 as an impact risk - see above
1910Noted that JPL Sentry has posted 2011 WL2 as an impact risk - see above
1811Grabbed MPEC 2011-W14 - 2011 WO2 - see above
Grabbed MPEC 2011-W15 - 2011 WQ2 - see above
Grabbed MPEC 2011-W16 - Observations and Orbits of Comets - see above
1737Grabbed MPEC 2011-W10 - 2011 WK2 - see above
Grabbed MPEC 2011-W11 - 2011 WL2 - see above
Grabbed MPEC 2011-W12 - 2011 WM2 - see above
Grabbed MPEC 2011-W13 - 2011 WN2 - see above
1656Noted that NEODyS has updated its 2011 UZ255 risk assessment - see above
1608Noted that JPL Sentry has removed 2011 UD21 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 UE305 risk assessment - see above
Noted that NEODyS has removed 2011 UE305 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 UZ255 risk assessment - see above
Noted that JPL Sentry has updated its 2011 VG9 risk assessment - see above
Noted that NEODyS has updated its 2011 VG9 risk assessment - see above
Grabbed MPEC 2011-W09 - Daily Orbit Update - see above