Contents  on 25 November '11

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NEOCP Activity  on 25 November '11

The MPC's NEO Confirmation Page has 43 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 43 objects listed. Of these, 30 were "one nighters." The Tracking News counted a total of 54 listings on the NEOCP on this day.

New MPECs  on 25 November '11

Minor Planet Electronic Circulars

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


MPEC 2011-W51 - "23:59 UT" - 2011 WC39


MPEC 2011-W50 - "23:26 UT" - 2011 WB39


MPEC 2011-W49 - "21:42 UT" - 2005 VN


MPEC 2011-W48 - "17:19 UT" - Observations and Orbits of Comets


MPEC 2011-W47 - "13:08 UT" - 2002 VU114


<< DOU on 25 Nov. '11 >>  MPEC 2011-W46 - "06:05 UT" - Daily Orbit Update


MPEC 2011-W45 - "03:39 UT" - 2011 WF32


MPEC 2011-W44 - "03:37 UT" - 2011 WE32

Observers  on 25 November '11

A total of 62 observers appeared in this day's MPECs.

CodeObserver / observatory
J24Altamira Obs. in the Canary Islands, 4 in MPEC 2011-W48 -- C/2010 S1, C/2010 G2, 131P, 78P
C60Argelander Institute for Astronomy Obs. in Germany, 3 in MPEC 2011-W46 -- 53430, 209924, 137084
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2011-W46 -- 2011 WO4
C77Bernezzo Obs. in Italy, 1 in MPEC 2011-W48 -- C/2010 G2
300Bisei Spaceguard Center in Japan, 8 in MPECs 2011-W44, 2011-W47, 2011-W48 & 2011-W51 -- 2011 WE32, 2011 WC39, C/2011 L3, C/2010 G2, C/2009 P1, 2002 VU114, 213P, 78P
B59Borken Obs. in Germany, 1 in MPEC 2011-W48 -- 78P
B96Brixiis Obs. in Belgium, 5 in MPEC 2011-W48 -- C/2010 S1, C/2010 G2, C/2009 P1, C/2008 FK75, 78P
215Buchloe Obs. in Germany, 3 in MPEC 2011-W48 -- P/2011 U2, P/2011 U1, 60P
B66Casasco Obs. in Italy, 7 in MPECs 2011-W46 & 2011-W48 -- 2011 SL102, C/2010 G2, C/2009 P1, C/2008 FK75, 2005 YU55, 170502, 78P
160Castelmartini Obs. in Italy, 21 in MPECs 2011-W46 & 2011-W48 -- 2011 UZ275, 2011 UU106, 2011 SR69, 2011 SL102, 2011 RR12, 2011 LC19, C/2010 S1, C/2010 G2, C/2009 P1, 219071, 170502, 163081, 138852, 138524, 137671, 433, 244P, 213P, 131P, 78P, 65P
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2011-W44, 2011-W46, 2011-W47, 2011-W48 & 2011-W51 -- 2011 WE32, 2011 WC39, 2011 WA, 2011 VS5, P/2011 UA134, P/2011 U2, 2011 SR69, 2011 RR12, 2011 LC19, C/2011 G1, 2002 VU114, 21088, 3691
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 10 in MPECs 2011-W44, 2011-W46, 2011-W49 & 2011-W51 -- 2011 WO4, 2011 WL15, 2011 WE32, 2011 WC39, 2011 SJ68, 2011 MD11, 2011 JA8, 2009 AV, 2008 JF, 2005 VN
J01Cielo Profundo Obs. in Spain, 2 in MPEC 2011-W48 -- C/2010 G2, 78P
821Cordoba Obs. Bosque Alegre Station in Argentina, 3 in MPECs 2011-W44, 2011-W49 & 2011-W51 -- 2011 WE32, 2011 WC39, 2005 VN
C81Dolomites Obs. in Italy, 3 in MPECs 2011-W44, 2011-W47 & 2011-W51 -- 2011 WE32, 2011 WC39, 2002 VU114
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2011-W46 -- 39572
A27Eridanus Obs. in Germany, 1 in MPEC 2011-W46 -- 37336
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2011-W44 & 2011-W51 -- 2011 WE32, 2011 WC39
157Frasso Sabino Obs. in Italy, 1 in MPEC 2011-W48 -- P/2011 U2
372Geisei Obs. in Japan, 11 in MPEC 2011-W48 -- P/2011 U2, P/2011 Q3, P/2011 P1, P/2011 N1, C/2010 S1, C/2010 G2, C/2009 Y1, C/2009 S3, C/2008 FK75, 158P, 45P
203GiaGa Obs. in Italy, 4 in MPEC 2011-W46 -- 2011 WM2, 2011 WA, 85818, 138852
J95Great Shefford Obs. in England, 2 in MPECs 2011-W44 & 2011-W50 -- 2011 WE32, 2011 WB39
379Hamamatsu-Yuto Obs. in Japan, 7 in MPECs 2011-W46 & 2011-W48 -- 2011 SR69, 2011 SL102, 2011 LC19, C/2009 P1, 2004 JO2, 2201, 78P
B15Inastars Obs. in Germany, 1 in MPEC 2011-W46 -- 2011 WA
246KLENOT in the Czech Republic, 1 in MPEC 2011-W44 -- 2011 WE32
C32Ka-Dar Obs. TAU Station in Russia, 23 in MPEC 2011-W48 -- P/2011 U2, C/2011 S2, P/2011 Q3, P/2011 P1, C/2011 L3, C/2011 G1, C/2011 C1, C/2010 S1, P/2010 JC81, C/2008 S3, 254P, 242P, 223P, 215P, 182P, 164P, 130P, 78P, 49P, 45P, 29P, 21P, 9P
585Kiev Comet Station in the Ukraine, 3 in MPEC 2011-W48 -- C/2010 G2, 65P, 49P
046Klet Obs. in the Czech Republic, 7 in MPEC 2011-W46 -- 2011 WA, 2011 UZ275, 2011 UU158, 2011 SR69, 2011 SO25, 2011 RR12, 2006 WO3
704LINEAR in New Mexico, 6 in MPEC 2011-W48 -- P/2011 P1, C/2011 G1, C/2010 S1, C/2008 S3, 253P, 65P
J38La Vara Obs. in Spain, 6 in MPEC 2011-W48 -- C/2010 S1, C/2010 G2, C/2008 FK75, 213P, 78P, 65P
B33Libbiano Obs. in Italy, 2 in MPECs 2011-W46 & 2011-W51 -- 2011 WC39, 138852
I36Los Campitos Obs. in Argentina, 1 in MPEC 2011-W46 -- 2011 WL2
130Lumezzane Obs. in Italy, 3 in MPEC 2011-W48 -- C/2010 G2, 213P, 176P
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2011-W44, 2011-W45 & 2011-W50 -- 2011 WF32, 2011 WE32, 2011 WB39
B82Maidbronn Obs. in Germany, 4 in MPEC 2011-W48 -- C/2009 P1, C/2008 FK75, 213P, 78P
C10Maisoncelles Obs. in France, 14 in MPEC 2011-W48 -- P/2011 R3, P/2011 P1, C/2011 G1, C/2011 F1, C/2010 G2, C/2009 P1, 244P, 242P, 213P, 176P, 164P, 97P, 49P, 45P
B10Mas des Gres Obs., 1 in MPEC 2011-W48 -- C/2009 P1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2011-W46 -- 2011 UD21
213Montcabre Obs. in Spain, 3 in MPEC 2011-W48 -- C/2010 G2, C/2009 P1, 213P
945Monte Deva Obs. in Spain, 6 in MPEC 2011-W48 -- C/2010 S1, C/2010 G2, C/2009 P1, C/2008 FK75, 213P, 78P
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2011-W44, 2011-W45 & 2011-W50 -- 2011 WF32, 2011 WE32, 2011 WB39
D81Nagano Obs. in Japan, 2 in MPEC 2011-W48 -- C/2010 G2, C/2009 P1
C23Olmen Obs. in Belgium, 8 in MPEC 2011-W48 -- C/2011 F1, C/2010 S1, P/2010 JC81, C/2010 G2, C/2009 P1, 78P, 49P, 21P
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2011-W46 -- 2011 VP12
F51Pan-STARRS 1 (PS1) in Hawaii, 14 in MPECs 2011-W46, 2011-W48 & 2011-W49 -- 2011 NY, 2010 WG3, 2006 WO3, 2006 NM, 2005 VN, 2005 NP1, 2002 HU11, 1988 TA, 85818, 304640, 303933, 189062, 2201, 242P
586Pic du Midi Obs. in France, 2 in MPECs 2011-W44 & 2011-W45 -- 2011 WF32, 2011 WE32
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 7 in MPEC 2011-W48 -- P/2011 UA134, P/2011 U1, C/2011 S2, C/2011 Q4, C/2011 Q1, 240P, 182P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 4 in MPEC 2011-W48 -- C/2011 R1, C/2010 B1, C/2009 F4, 242P
C09Rouet Obs. in France, 9 in MPEC 2011-W48 -- C/2011 G1, C/2010 S1, C/2010 G2, 242P, 213P, 164P, 130P, 78P, 49P
461SZTE Asteroid Program in Hungary, 1 in MPEC 2011-W46 -- 2005 YU55
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2011-W44 -- 2011 WE32
H36Sandlot Obs. in Kansas, 3 in MPECs 2011-W44 & 2011-W46 -- 2011 WO4, 2011 WE32, 2011 PT1
B56Sant Pere Obs. in Spain, 1 in MPEC 2011-W48 -- 78P
204Schiaparelli Obs. in Italy, 11 in MPECs 2011-W44, 2011-W45, 2011-W46, 2011-W47, 2011-W48, 2011-W49 & 2011-W51 -- 2011 WF32, 2011 WE32, 2011 WC39, 2011 UD64, P/2011 U1, P/2011 S1, C/2010 U3, 2005 VN, 2002 VU114, 164P, 60P
510Siegen Obs. in Germany, 1 in MPEC 2011-W48 -- C/2009 P1
645Sloan Digital Sky Survey (SDSS) in New Mexico, 31 in MPEC 2011-W46 -- 2010 WY8, 2010 VA1, 2010 TU54, 2010 MR87, 2010 GZ6, 2010 AB78, 2009 XR2, 2009 UA, 2009 TK8, 2009 ST, 2009 RD4, 2009 OC, 2008 WP1, 2008 VF, 2008 SX245, 2008 MN1, 2008 JT19, 2008 EG, 2008 CC175, 2006 DS14, 2005 FC, 2004 DH2, 2001 CQ36, 88213, 86667, 66063, 39572, 203471, 162694, 152931, 140333
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2011-W46 -- 2011 SL102
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2011-W44, 2011-W45, 2011-W46 & 2011-W50 -- 2011 WL2, 2011 WL15, 2011 WF32, 2011 WE32, 2011 WB39, 2011 VG9, 2011 UZ255
A98Taurus-1 Obs. in Belarus, 3 in MPEC 2011-W48 -- C/2011 F1, C/2010 G2, 49P
B51Vallauris Obs. in France, 4 in MPEC 2011-W48 -- C/2011 G1, C/2010 S1, C/2010 G2, 49P
H47Vicksburg Obs. in Mississippi, 3 in MPEC 2011-W48 -- 213P, 78P, 48P
B42Vitebsk Obs. in Belarus, 3 in MPEC 2011-W48 -- P/2011 R3, C/2010 U3, 65P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 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 WL15JPL Sentry16192058-208822.2e-09-6.28-6.300JPL: "Analysis based on 20 observations spanning 1.8671 days (2011-Nov-22.38481 to 2011-Nov-24.25189)." Diameter approximately 0.349 km. from mean, weighted H=20.0.
NEODyS16192025-2090101.16e-07-4.21-4.540NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2011-11-22.386 to 2011-11-24.253."
2011 WL2JPL Sentry16192060-2106142.4e-06-3.80-4.430JPL: "Analysis based on 100 observations spanning 8.0297 days (2011-Nov-16.31883 to 2011-Nov-24.34856)." Diameter approximately 0.249 km. from mean, weighted H=20.7.
NEODyS16192071-209034.12e-08-5.48-5.830NEODyS: "Based on 100 optical observations (of which 0 are rejected as outliers) from 2011-11-16.320 to 2011-11-24.349."
2011 VG9JPL Sentry16192085-210494.4e-06-3.85-4.140JPL: "Analysis based on 45 observations spanning 8.9820 days (2011-Nov-15.37847 to 2011-Nov-24.36049)." Diameter approximately 0.120 km. from mean, weighted H=22.2.
NEODyS16192085-208633.28e-06-3.97-4.220NEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2011-11-15.379 to 2011-11-24.361."
2011 UZ255JPL Sentry16192066-207233.7e-05-3.64-3.640JPL: "Analysis based on 88 observations spanning 24.963 days (2011-Oct-30.44574 to 2011-Nov-24.40854)." Diameter approximately 0.075 km. from mean, weighted H=23.3.
NEODyS16192069-208433.08e-05-3.72-3.720NEODyS: "Based on 88 optical observations (of which 0 are rejected as outliers) from 2011-10-30.447 to 2011-11-24.409."
2011 UD21JPL Sentry1619210514.9e-06-7.51-7.510JPL: "Analysis based on 85 observations spanning 36.811 days (2011-Oct-18.42484 to 2011-Nov-24.235388)." 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 25 November '11

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

0028 11/26Grabbed MPEC 2011-W51 - 2011 WC39 - see above
2359Grabbed MPEC 2011-W50 - 2011 WB39 - see above
2206Grabbed MPEC 2011-W49 - 2005 VN - see above
1734Grabbed MPEC 2011-W48 - Observations and Orbits of Comets - see above
1619Noted that JPL Sentry has reposted 2011 UD21 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 UZ255 risk assessment - see above
Noted that NEODyS 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
Noted that JPL Sentry has updated its 2011 WL15 risk assessment - see above
Noted that NEODyS has updated its 2011 WL15 risk assessment - see above
Noted that JPL Sentry has updated its 2011 WL2 risk assessment - see above
Noted that NEODyS has updated its 2011 WL2 risk assessment - see above
Grabbed MPEC 2011-W46 - Daily Orbit Update - see above
Grabbed MPEC 2011-W47 - 2002 VU114 - see above
0403Grabbed MPEC 2011-W44 - 2011 WE32 - see above
Grabbed MPEC 2011-W45 - 2011 WF32 - see above