M.P.E.C. 2012-C23 Issued 2012 Feb. 4, 16:10 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/2012 B3 (LA SAGRA) Observations: CK12B030 C2012 01 29.18454 17 05 47.40 +30 46 26.8 18.3 TrEC023J75 CK12B030 C2012 01 29.19037 17 05 47.64 +30 46 34.0 18.9 TrEC023J75 CK12B030 C2012 01 29.19622 17 05 47.88 +30 46 41.4 18.4 TrEC023J75 CK12B030 KC2012 01 30.21456517 06 33.05 +31 08 21.2 18.5 TrEC023J75 CK12B030 KC2012 01 30.21879317 06 33.25 +31 08 26.8 18.4 TrEC023J75 CK12B030 KC2012 01 30.22308217 06 33.42 +31 08 32.1 18.5 TrEC023J75 CK12B030 KC2012 01 30.22722717 06 33.61 +31 08 37.7 18.6 TrEC023J75 CK12B030 |C2012 01 30.48049 17 06 44.85 +31 14 02.9 cEC023H06 CK12B030 |C2012 01 30.48272 17 06 44.93 +31 14 05.7 cEC023H06 CK12B030 |C2012 01 30.48496 17 06 45.01 +31 14 08.7 18.6 TcEC023H06 CK12B030 C2012 01 30.49755 17 06 45.54 +31 14 25.1 18.4 ToEC023H01 CK12B030 C2012 01 30.50564 17 06 45.88 +31 14 35.6 18.4 ToEC023H01 CK12B030 C2012 01 30.51390 17 06 46.25 +31 14 46.3 18.5 ToEC023H01 CK12B030 C2012 01 30.52324 17 06 46.65 +31 14 58.4 18.5 ToEC023H01 CK12B030 $C2012 01 30.64961 17 06 52.23 +31 17 41.7 19.5 ToEC023F65 CK12B030 $C2012 01 30.65169 17 06 52.32 +31 17 44.3 19.6 ToEC023F65 CK12B030 $C2012 01 30.65376 17 06 52.41 +31 17 46.9 19.5 ToEC023F65 CK12B030 KC2012 01 31.22465617 07 17.36 +31 30 04.4 18.5 TrEC023J75 CK12B030 KC2012 01 31.23304617 07 17.72 +31 30 15.4 18.5 TrEC023J75 CK12B030 KC2012 01 31.24144717 07 18.08 +31 30 26.5 18.4 TrEC023J75 CK12B030 KC2012 01 31.24976917 07 18.45 +31 30 37.2 18.6 TrEC023J75 CK12B030 KC2012 01 31.51092 17 07 29.86 +31 36 17.1 19.2 TuEC023H15 CK12B030 KC2012 01 31.51425 17 07 29.99 +31 36 21.5 19.4 TuEC023H15 CK12B030 KC2012 01 31.51754 17 07 30.19 +31 36 26.3 19.1 TuEC023H15 CK12B030 KC2012 02 01.21491617 08 00.34 +31 51 36.6 18.5 TrEC023J75 CK12B030 KC2012 02 01.22178917 08 00.63 +31 51 45.7 18.6 TrEC023J75 CK12B030 KC2012 02 01.22867417 08 00.94 +31 51 54.6 18.5 TrEC023J75 CK12B030 C2012 02 01.47113 17 08 11.46 +31 57 13.1 19.6 TtEC023G84 CK12B030 C2012 02 01.48253 17 08 11.95 +31 57 28.2 19.7 TtEC023G84 CK12B030 C2012 02 01.49389 17 08 12.40 +31 57 43.2 19.6 TtEC023G84 CK12B030 HC2012 02 01.51286 17 08 13.35 +31 58 12.0 oEC023291 CK12B030 HC2012 02 01.51760 17 08 13.45 +31 58 14.8 oEC023291 CK12B030 HC2012 02 01.51982 17 08 13.52 +31 58 17.9 oEC023291 CK12B030 1C2012 02 01.60506 17 08 17.24 +32 00 10.0 19.3 ToEC023F65 CK12B030 1C2012 02 01.60788 17 08 17.36 +32 00 13.7 19.2 ToEC023F65 CK12B030 1C2012 02 01.61118 17 08 17.48 +32 00 18.1 19.6 ToEC023F65 CK12B030 KC2012 02 02.13514 17 08 39.87 +32 11 49.2 uEC023J95 CK12B030 KC2012 02 02.14388 17 08 40.28 +32 12 00.8 uEC023J95 CK12B030 KC2012 02 02.15177 17 08 40.58 +32 12 11.2 18.2 TuEC023J95 CK12B030 5C2012 02 02.20747 17 08 43.01 +32 13 26.3 18.9 TjEC023012 CK12B030 5C2012 02 02.21152 17 08 43.09 +32 13 30.9 19.2 TjEC023012 CK12B030 5C2012 02 02.21558 17 08 43.32 +32 13 35.7 19.1 TjEC023012 CK12B030 5C2012 02 02.22368 17 08 43.64 +32 13 46.4 19.0 TjEC023012 CK12B030 5C2012 02 02.23178 17 08 43.99 +32 13 57.3 19.1 TjEC023012 CK12B030 5C2012 02 02.23988 17 08 44.29 +32 14 06.9 19.2 TjEC023012 CK12B030 5C2012 02 02.24394 17 08 44.47 +32 14 13.9 19.1 TjEC023012 CK12B030 KC2012 02 03.23584 17 09 26.58 +32 36 16.6 uEC023J95 CK12B030 KC2012 02 03.24219 17 09 26.85 +32 36 25.4 uEC023J95 CK12B030 KC2012 02 03.24853 17 09 27.13 +32 36 33.8 18.6 TuEC023J95 CK12B030 C2012 02 04.03429 17 10 00.13 +32 54 11.6 18.1 TvEC023C32 CK12B030 C2012 02 04.04795 17 10 00.73 +32 54 30.4 17.8 TvEC023C32 Observer details: 012 Uccle. Observer P. De Cat. 0.85-m f/2.5 Schmidt + 3Kx2K CCD. 291 LPL/Spacewatch II. Observer J. V. Scotti. 1.8-m f/2.7 reflector + CCD. C32 Ka-Dar Observatory, TAU Station, Nizhny Arkhyz. Observer V. Gerke. Measurer A. Novichonok. 0.40-m f/8 Ritchey-Chretien + CCD. F65 Haleakala-Faulkes Telescope North. Observers K. Rochowicz, G. Sostero, E. Guido, N. Howes, A. Tripp. Measurers K. Rochowicz, G. Sostero, E. Guido, N. Howes, A. Tripp. G. Sostero. 2.0-m f/10.0 Ritchey-Chretien + CCD. G84 Mount Lemmon SkyCenter. Observer T. Vorobjov. 0.81-m f/7 Ritchey-Chretien + 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. Observer H. Sato. 0.51-m f/4.5 reflector + CCD. H15 ISON-NM Observatory, Mayhill. Observer L. Elenin. 0.45-m f/2.8 astrograph + CCD. J75 OAM Observatory, La Sagra. Observers S. Sanchez, J. Nomen, M. Hurtado, J. A. Jaume, W. K. Y. Yeung, P. Rios, F. Serra, F. Serra TEL 0. 45-m f/2. 8 reflector. 0.45-m f/2.8 reflector + CCD. J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain + CCD. Orbital elements: C/2012 B3 (La Sagra) T 2011 Nov. 29.91022 TT MPC q 3.5272726 (2000.0) P Q Peri. 49.22159 -0.40242645 +0.04243591 Node 252.84407 -0.80143978 +0.46644397 e 1.0 Incl. 106.85300 +0.44243330 +0.88353224 From 50 observations 2012 Jan. 29-Feb. 4. Ephemeris: C/2012 B3 (La Sagra) Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2 2012 01 05 16 46 14.9 +23 25 39 3.9896 3.5427 56.5 13.4 18.5 ... 2012 01 20 16 58 41.3 +27 42 32 3.8450 3.5581 65.9 14.6 18.4 ... 2012 01 28 17 04 54.1 +30 21 35 3.7674 3.5684 70.9 15.1 18.4 ... 2012 02 03 17 09 16.5 +32 31 01 3.7109 3.5772 74.6 15.4 18.4 2012 02 04 17 09 58.5 +32 53 25 3.7017 3.5787 75.2 15.4 18.4 2012 02 05 17 10 40.0 +33 16 04 3.6927 3.5802 75.8 15.5 18.4 ... 2012 02 11 17 14 37.0 +35 36 45 3.6402 3.5900 79.3 15.7 18.4 ... 2012 02 19 17 19 15.3 +38 56 41 3.5771 3.6043 83.7 15.8 18.3 ... 2012 03 05 17 25 16.8 +45 43 16 3.4876 3.6348 90.5 15.8 18.3 Gareth V. Williams (C) Copyright 2012 MPC M.P.E.C. 2012-C23