MPEC 2011-T12 : COMET C/2011 S2
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M.P.E.C. 2011-T12 Issued 2011 Oct. 2, 19:27 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://www.minorplanetcenter.net/ ISSN 1523-6714
COMET C/2011 S2
Observations:
CK11S020 C2011 09 30.48411 09 12 10.05 +20 18 30.3 15.7 TrET012703
CK11S020 C2011 09 30.48640 09 12 10.68 +20 18 24.6 15.7 TrET012703
CK11S020 C2011 09 30.48868 09 12 11.12 +20 18 20.3 15.7 TrET012703
CK11S020 C2011 09 30.49094 09 12 11.83 +20 18 15.9 15.7 TrET012703
CK11S020 C2011 10 01.07507 09 14 37.28 +19 58 34.7 16.4 TrET012A17
CK11S020 KC2011 10 01.07783 09 14 37.95 +19 58 30.0 16.6 T ET012595
CK11S020 KC2011 10 01.08240 09 14 39.12 +19 58 20.0 16.7 T ET012595
CK11S020 C2011 10 01.08278 09 14 39.23 +19 58 18.8 16.4 TrET012A17
CK11S020 C2011 10 01.09059 09 14 41.18 +19 58 03.4 16.6 TrET012A17
CK11S020 KC2011 10 01.11139 09 14 46.36 +19 57 21.2 17.2 TuET012113
CK11S020 KC2011 10 01.11241709 14 46.56 +19 57 19.1 16.9 TuET012510
CK11S020 C2011 10 01.11512 09 14 47.16 +19 57 13.6 17.2 TuET012A71
CK11S020 KC2011 10 01.11569 09 14 47.35 +19 57 12.6 17.2 TuET012113
CK11S020 C2011 10 01.11707 09 14 47.70 +19 57 11.5 17.3 TuET012A71
CK11S020 C2011 10 01.11903 09 14 48.07 +19 57 07.9 17.4 TuET012A71
CK11S020 KC2011 10 01.11998 09 14 48.48 +19 57 03.7 17.0 TuET012113
CK11S020 KC2011 10 01.12027609 14 48.54 +19 57 03.1 16.8 TuET012510
CK11S020 C2011 10 01.12098 09 14 48.66 +19 57 02.3 17.1 TuET012A71
CK11S020 C2011 10 01.12294 09 14 49.09 +19 56 59.4 17.3 TuET012A71
CK11S020 KC2011 10 01.12394 09 14 49.47 +19 56 55.7 16.4 TtET012204
CK11S020 KC2011 10 01.12427 09 14 49.53 +19 56 55.1 17.0 TuET012113
CK11S020 C2011 10 01.12490 09 14 49.41 +19 56 57.8 17.5 TuET012A71
CK11S020 KC2011 10 01.12813609 14 50.48 +19 56 47.4 17.2 TuET012510
CK11S020 KC2011 10 01.13106 09 14 51.23 +19 56 41.3 tET012204
CK11S020 KC2011 10 01.13599509 14 52.45 +19 56 31.5 17.7 TuET012510
CK11S020 KC2011 10 01.13789 09 14 52.91 +19 56 27.7 tET012204
CK11S020 KC2011 10 01.13840 09 14 53.02 +19 56 26.4 16.9 TuET012B86
CK11S020 KC2011 10 01.14080 09 14 53.62 +19 56 21.6 17.1 TuET012B86
CK11S020 KC2011 10 01.14323 09 14 54.23 +19 56 16.5 16.8 TuET012B86
CK11S020 KC2011 10 01.14385509 14 54.38 +19 56 15.8 17.6 TuET012510
CK11S020 KC2011 10 01.14566 09 14 54.84 +19 56 11.8 17.0 TuET012B86
CK11S020 KC2011 10 01.14680 09 14 55.19 +19 56 10.5 16.9 TuET012157
CK11S020 KC2011 10 01.14934 09 14 55.85 +19 56 04.9 16.9 TuET012157
CK11S020 KC2011 10 01.15152 09 14 56.35 +19 56 00.4 17.0 TuET012157
CK11S020 KC2011 10 01.15774 09 14 57.85 +19 55 47.0 uET012J95
CK11S020 KC2011 10 01.16622 09 14 59.96 +19 55 30.0 uET012J95
CK11S020 KC2011 10 01.16754 09 15 00.26 +19 55 27.7 17.1 TuET012B86
CK11S020 KC2011 10 01.17076 09 15 01.06 +19 55 21.1 16.6 TuET012B86
CK11S020 KC2011 10 01.17397 09 15 01.87 +19 55 14.3 17.3 TuET012B86
CK11S020 KC2011 10 01.17481 09 15 02.10 +19 55 12.7 16.4 TuET012J95
CK11S020 KC2011 10 01.17719 09 15 02.64 +19 55 08.2 16.8 TuET012B86
CK11S020 C2011 10 01.41107509 16 00.87 +19 47 13.6 18.3 TtET012H21
CK11S020 C2011 10 01.41219709 16 01.09 +19 47 11.0 18.6 TtET012H21
CK11S020 C2011 10 01.41331809 16 01.36 +19 47 08.8 18.1 TtET012H21
CK11S020 C2011 10 01.41425409 16 01.62 +19 47 06.4 18.0 TtET012H21
CK11S020 KC2011 10 01.41575109 16 01.97 +19 47 03.3 18.2 TtET012H21
CK11S020 KC2011 10 01.41855809 16 02.66 +19 46 57.8 18.2 TtET012H21
CK11S020 KC2011 10 01.42153609 16 03.44 +19 46 52.0 18.1 TtET012H21
CK11S020 KC2011 10 01.42435409 16 04.12 +19 46 46.1 18.1 TtET012H21
CK11S020 C2011 10 01.42904 09 16 05.27 +19 46 37.3 16.8 TrET012H17
CK11S020 C2011 10 01.43713 09 16 07.29 +19 46 21.0 17.6 TrET012H17
CK11S020 %C2011 10 01.44047 09 16 08.13 +19 46 13.6 16.4 ToET012H06
CK11S020 C2011 10 01.44911 09 16 10.28 +19 45 56.0 16.8 TrET012H17
CK11S020 %C2011 10 01.45082 09 16 10.78 +19 45 51.7 17.0 ToET012H06
CK11S020 |C2011 10 01.47049 09 16 15.67 +19 45 12.8 cET012H06
CK11S020 |C2011 10 01.47306 09 16 16.30 +19 45 07.6 cET012H06
CK11S020 |C2011 10 01.47563 09 16 16.89 +19 45 02.6 16.0 TcET012H06
CK11S020 KC2011 10 01.48924 09 16 20.28 +19 44 34.9 16.3 TrET012H10
CK11S020 C2011 10 01.49549 09 16 21.83 +19 44 22.0 16.7 ToET012H01
CK11S020 KC2011 10 01.49792 09 16 22.46 +19 44 17.1 16.5 TrET012H10
CK11S020 C2011 10 01.49882 09 16 22.65 +19 44 15.2 16.7 ToET012H01
CK11S020 C2011 10 01.50219 09 16 23.49 +19 44 08.4 16.8 ToET012H01
CK11S020 C2011 10 01.50568 09 16 24.34 +19 44 01.3 16.4 ToET012H01
CK11S020 C2011 10 01.51336 09 16 26.27 +19 43 45.5 16.4 TrET012G96
CK11S020 C2011 10 01.51382 09 16 26.38 +19 43 45.0 rET012G96
CK11S020 C2011 10 01.51431 09 16 26.50 +19 43 43.6 rET012G96
CK11S020 C2011 10 01.51474 09 16 26.59 +19 43 43.1 rET012G96
CK11S020 C2011 10 02.11416 09 18 54.99 +19 23 14.1 16.6 TrET012106
CK11S020 C2011 10 02.12720 09 18 58.24 +19 22 47.4 16.7 TrET012106
CK11S020 C2011 10 02.14022 09 19 01.33 +19 22 21.5 16.1 TrET012106
CK11S020 C2011 10 02.14319 09 19 02.08 +19 22 15.3 17.0 ToET012461
CK11S020 C2011 10 02.14412 09 19 02.38 +19 22 13.0 17.5 ToET012461
CK11S020 C2011 10 02.14506 09 19 02.60 +19 22 10.9 16.6 ToET012461
CK11S020 C2011 10 02.14598 09 19 02.80 +19 22 09.6 17.4 ToET012461
CK11S020 C2011 10 02.15325 09 19 04.55 +19 21 54.5 16.0 TrET012106
CK11S020 KC2011 10 02.16336409 19 07.06 +19 21 33.4 17.1 TuET012510
CK11S020 KC2011 10 02.16965209 19 08.64 +19 21 20.3 17.1 TuET012510
CK11S020 KC2011 10 02.17593909 19 10.15 +19 21 07.6 17.1 TuET012510
CK11S020 KC2011 10 02.18222609 19 11.72 +19 20 54.9 17.1 TuET012510
CK11S020 C2011 10 02.42037 09 20 10.62 +19 12 45.6 17.1 TcET012704
CK11S020 C2011 10 02.43367 09 20 13.95 +19 12 18.5 17.8 TcET012704
CK11S020 C2011 10 02.43532 09 20 14.37 +19 12 13.6 16.7 TrET012H17
CK11S020 C2011 10 02.44697 09 20 17.08 +19 11 51.5 17.3 TcET012704
CK11S020 C2011 10 02.45731 09 20 19.69 +19 11 30.6 16.8 TrET012H17
CK11S020 C2011 10 02.46350309 20 21.23 +19 11 16.1 16.6 TuET012H36
CK11S020 C2011 10 02.46499209 20 21.62 +19 11 12.7 17.0 TuET012H36
CK11S020 C2011 10 02.46531 09 20 21.72 +19 11 11.8 16.8 TrET012H17
CK11S020 C2011 10 02.46647909 20 21.96 +19 11 10.1 16.8 TuET012H36
CK11S020 C2011 10 02.47165 09 20 23.37 +19 10 59.5 16.6 ToET012H01
CK11S020 C2011 10 02.47366 09 20 23.56 +19 10 57.0 17.3 TcET012704
CK11S020 C2011 10 02.47653 09 20 24.47 +19 10 48.6 16.8 TrET012H17
CK11S020 C2011 10 02.47916 09 20 25.21 +19 10 43.8 16.5 ToET012H01
CK11S020 C2011 10 02.48568 09 20 26.79 +19 10 30.1 16.7 TrET012H17
CK11S020 C2011 10 02.48603 09 20 26.88 +19 10 29.9 16.6 ToET012H01
CK11S020 C2011 10 02.49557 09 20 29.23 +19 10 10.5 16.6 ToET012H01
Observer details:
106 Crni Vrh. Observer J. Skvarc. 0.6-m f/3.3 Deltagraph + CCD.
113 Volkssternwarte Drebach, Schoenbrunn. Observer A. Knoefel. 0.5-m f/5
reflector + CCD.
157 Frasso Sabino. Observers R. Haver, R. Gorelli. Measurer R. Haver.
0.37-m f/6.85 Cassegrain + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.60-m f/4.64 reflector
+ CCD.
461 University of Szeged, Piszkesteto Stn. (Konkoly). Observer K. Sarneczky.
0.60-m Schmidt + CCD.
510 Siegen. Observers M. Jung, H. Bill. Measurer H. Bill. 0.43-m f/4.5
reflector + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/4.5 reflector + CCD.
703 Catalina Sky Survey. Observer R. A. Kowalski. Measurers J. D. Ahern,
E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs, P. Tricarico,
A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught.
0.68-m Schmidt + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, G. Spitz,
R. Brungard, J. Paige, P. Festler, T. McVey, A. Valdivia, C. Gall. 1.0-m
f/2.15 reflector + CCD.
A17 Guidestar Observatory, Weinheim. Observers M. Emmerich, S. Melchert.
0.36-m f/6 Schmidt-Cassegrain + CCD.
A71 Stixendorf. Observers M. Jaeger, E. Prosperi, S. Prosperi, W. Vollmann.
Measurer W. Vollmann. 0.25-m f/3.8 reflector + CCD.
B86 Sternwarte Hagen. Observer M. Klein. 0.50-m f/3.0 Deltagraph + CCD.
G96 Mt. Lemmon Survey. Observer A. R. Gibbs. Measurers J. D. Ahern,
E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer,
R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught. 1.5-m reflector
+ CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
H06 RAS Observatory, Mayhill. Observers E. Guido, G. Sostero, N. Howes,
H. Sato. 0.25-m f/3.4 reflector + CCD, 0.51-m f/4.5 reflector + CCD.
H10 Tzec Maun Observatory, Mayhill. Observers S. Baroni, L. Buzzi, P. Concari,
S. Foglia, G. Galli, M. Tombelli. 0.18-m f/2.8 Newtonian reflector + CCD.
H17 Angel Peaks Observatory. Observer J. Hall. 0.35-m f/10
Schmidt-Cassegrain + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Vorobjov, L. Buzzi, S. Foglia. 0.61-m f/4.0 astrograph + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
C/2011 S2
T 2011 Oct. 23.52447 TT MPC
q 1.1325858 (2000.0) P Q
Peri. 188.82850 -0.45363335 -0.84533505
Node 288.57338 +0.83474775 -0.29215102
e 1.0 Incl. 17.31857 +0.31211052 -0.44727670
From 91 observations 2011 Sept. 30-Oct. 2.
Ephemeris:
C/2011 S2
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2011 09 02 07 06 44.9 +32 10 39 1.6970 1.3964 55.3 36.5 18.1
...
2011 09 17 08 14 03.4 +27 01 58 1.5672 1.2744 54.2 39.8 17.5
...
2011 09 25 08 48 58.8 +23 15 04 1.5199 1.2218 53.3 41.1 17.3
...
2011 10 01 09 14 18.2 +20 01 13 1.4947 1.1892 52.5 41.9 17.1
2011 10 02 09 18 26.3 +19 27 14 1.4914 1.1845 52.4 42.0 17.1
2011 10 03 09 22 32.9 +18 52 50 1.4882 1.1799 52.2 42.1 17.1
...
2011 10 09 09 46 39.6 +15 18 47 1.4745 1.1566 51.5 42.5 17.0
...
2011 10 17 10 17 18.7 +10 19 06 1.4687 1.1375 50.6 42.7 16.9
...
2011 11 01 11 10 16.1 +00 48 55 1.4901 1.1408 49.9 41.8 16.9
The orbit of this object is essentially indeterminate at the present time.
It is possible that this is a short-period comet. Among the wide range of
possible short-period orbits are orbits that appear similar to P/2006 T1
(Levy). Initial attempts to link the two apparitions have not been
successful. Further observations are encouraged.
Gareth V. Williams (C) Copyright 2011 MPC M.P.E.C. 2011-T12
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