[Iaude] MPEC A75: COMET C/2017 A3 (Elenin)

mpec at si.edu mpec at si.edu
Tue Jan 10 23:37:35 EST 2017


M.P.E.C. 2017-A75                                Issued 2017 Jan. 11, 04:32 UT
 
     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
    on behalf of Division F 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 at CFA.HARVARD.EDU
            URL http://www.minorplanetcenter.net/    ISSN 1523-6714


                           COMET C/2017 A3 (Elenin)
 
Observations:
    CK17A030  C2017 01 05.45843 06 52 57.13 -51 07 47.8          17.6 TqEA075Q60
    CK17A030  C2017 01 05.46508 06 52 56.21 -51 07 42.9          17.9 TqEA075Q60
    CK17A030  C2017 01 05.47172 06 52 55.35 -51 07 37.9          17.6 TqEA075Q60
    CK17A030 KC2017 01 06.05206 06 51 47.77 -51 00 09.0          18.8 TqEA075I47
    CK17A030 KC2017 01 06.06010 06 51 46.77 -51 00 02.9          18.4 TqEA075I47
    CK17A030 KC2017 01 06.06230 06 51 46.57 -51 00 01.1          18.8 TqEA075I47
    CK17A030 KC2017 01 06.06815 06 51 45.82 -50 59 56.9          18.4 TqEA075I47
    CK17A030 KC2017 01 06.06925 06 51 45.63 -50 59 56.1          18.4 TqEA075I47
    CK17A030 KC2017 01 06.07327 06 51 45.27 -50 59 52.8          18.2 TqEA075I47
    CK17A030  C2017 01 06.08278 06 51 44.07 -50 59 47.7          18.5 TqEA075Y00
    CK17A030  C2017 01 06.08755 06 51 43.54 -50 59 44.2          18.1 TqEA075Y00
    CK17A030 |C2017 01 06.08767 06 51 43.54 -50 59 42.5          18.7 TuEA075807
    CK17A030 |C2017 01 06.08944 06 51 43.32 -50 59 41.0          19.0 TuEA075807
    CK17A030 |C2017 01 06.09146 06 51 43.08 -50 59 39.4          18.5 TuEA075807
    CK17A030  C2017 01 06.09233 06 51 42.90 -50 59 38.8          18.3 TqEA075Y00
    CK17A030  C2017 01 06.18568 06 51 31.95 -50 58 25.7          17.9 TqEA075Y00
    CK17A030  C2017 01 06.19564 06 51 30.73 -50 58 18.4          17.9 TqEA075Y00
    CK17A030  C2017 01 06.20701 06 51 29.42 -50 58 08.4          17.8 TqEA075Y00
    CK17A030 KC2017 01 06.37048 06 51 10.21 -50 55 58.4          18.2 TqEA075W98
    CK17A030 KC2017 01 06.37499 06 51 09.74 -50 55 54.6          18.2 TqEA075W98
    CK17A030  C2017 01 06.46038 06 51 00.23 -50 54 48.9          17.6 TqEA075Q60
    CK17A030  C2017 01 06.46724 06 50 59.44 -50 54 43.5          17.9 TqEA075Q60
    CK17A030  C2017 01 06.47414 06 50 58.58 -50 54 36.9          17.8 TqEA075Q60
    CK17A030 2C2017 01 06.48162 06 50 57.84 -50 54 32.9          18.6 TqEA075Q62
    CK17A030 2C2017 01 06.48487 06 50 57.38 -50 54 29.0          18.4 TqEA075Q62
    CK17A030 2C2017 01 06.48709 06 50 57.16 -50 54 28.2          18.1 TqEA075Q62
    CK17A030 KC2017 01 06.48841 06 50 56.92 -50 54 27.2          19.1 TqEA075E23
    CK17A030 1C2017 01 06.49405 06 50 56.23 -50 54 22.3                vEA075Q62
    CK17A030 KC2017 01 06.49536 06 50 56.09 -50 54 21.2          18.6 TqEA075E23
    CK17A030 1C2017 01 06.49649 06 50 55.95 -50 54 20.7                vEA075Q62
    CK17A030 1C2017 01 06.49893 06 50 55.67 -50 54 19.1          17.4 TvEA075Q62
    CK17A030 KC2017 01 06.50334 06 50 55.17 -50 54 14.5          17.4 TqEA075E23
    CK17A030 0C2017 01 06.54014 06 50 50.90 -50 53 46.2          19.3 TqEA075Q62
    CK17A030 0C2017 01 06.55772 06 50 48.79 -50 53 32.8          19.2 TqEA075Q62
    CK17A030 6C2017 01 06.62844 06 50 40.46 -50 52 36.0          17.9 TtEA075Q62
    CK17A030 6C2017 01 06.63076 06 50 40.25 -50 52 34.3          18.1 TtEA075Q62
    CK17A030 NC2017 01 06.63116 06 50 40.09 -50 52 33.9          18.0 TqEA075Q62
    CK17A030 3C2017 01 06.63236 06 50 40.03 -50 52 33.1          17.9 TqEA075Q62
    CK17A030 6C2017 01 06.63355 06 50 39.88 -50 52 33.0          17.8 TtEA075Q62
    CK17A030 6C2017 01 06.63603 06 50 39.59 -50 52 29.7          17.9 TtEA075Q62
    CK17A030 3C2017 01 06.63706 06 50 39.46 -50 52 29.4          18.0 TqEA075Q62
    CK17A030 6C2017 01 06.63885 06 50 39.25 -50 52 28.3          17.9 TtEA075Q62
    CK17A030 NC2017 01 06.64134 06 50 38.94 -50 52 25.9          18.0 TqEA075Q62
    CK17A030 6C2017 01 06.64163 06 50 38.96 -50 52 25.9          17.9 TtEA075Q62
    CK17A030 3C2017 01 06.64177 06 50 38.90 -50 52 25.5          18.0 TqEA075Q62
    CK17A030 NC2017 01 06.64532 06 50 38.53 -50 52 23.3          17.8 TqEA075Q62
    CK17A030  C2017 01 06.64744 06 50 38.32 -50 52 21.0          17.7 TqEA075Q60
    CK17A030  C2017 01 06.66738 06 50 35.89 -50 52 04.2          17.6 TqEA075Q60
    CK17A030 `C2017 01 06.69045 06 50 33.22 -50 51 46.7          18.4 TqEA075Q62
    CK17A030 `C2017 01 06.69221 06 50 33.03 -50 51 44.9          18.7 TqEA075Q62
    CK17A030 3C2017 01 07.32959 06 49 19.29 -50 43 11.5          18.6 TqEA075W88
    CK17A030 3C2017 01 07.33792 06 49 18.40 -50 43 04.7          18.6 TqEA075W88
    CK17A030 |C2017 01 07.44742 06 49 06.09 -50 41 35.3          17.6 TuEA075Q62
    CK17A030  C2017 01 07.45135 06 49 05.68 -50 41 32.2          18.6 TqEA075Q60
    CK17A030  C2017 01 07.45822 06 49 04.88 -50 41 26.5          18.0 TqEA075Q60
    CK17A030  C2017 01 07.46503 06 49 04.07 -50 41 20.7          17.7 TqEA075Q60
    CK17A030 |C2017 01 07.47164 06 49 03.25 -50 41 16.3          17.6 TuEA075Q62
    CK17A030  C2017 01 07.71520 06 48 34.95 -50 37 56.4          18.1 TqEA075Q60
    CK17A030  C2017 01 07.72156 06 48 34.16 -50 37 49.8          17.9 TqEA075Q60
    CK17A030  C2017 01 07.72919 06 48 33.34 -50 37 43.5          17.8 TqEA075Q60
    CK17A030 KC2017 01 08.04636 06 47 57.50 -50 33 22.4          19.1 TqEA075W96
    CK17A030 KC2017 01 08.06035 06 47 55.64 -50 33 11.7          18.8 TqEA075W96
    CK17A030 9C2017 01 08.26010 06 47 32.59 -50 30 23.1                qEA075W88
    CK17A030 9C2017 01 08.26839 06 47 31.69 -50 30 16.4          18.0 TqEA075W88
    CK17A030 KC2017 01 08.28031 06 47 30.31 -50 30 06.9          18.0 TqEA075W96
    CK17A030 KC2017 01 08.29295 06 47 28.82 -50 29 55.5          18.0 TqEA075W96
    CK17A030 KC2017 01 08.33619 06 47 23.80 -50 29 18.7          17.3 TqEA075W96
    CK17A030 KC2017 01 08.34841 06 47 22.47 -50 29 09.5          17.5 TqEA075W98
    CK17A030 KC2017 01 08.35268 06 47 21.93 -50 29 04.7          17.7 TqEA075W98
    CK17A030  C2017 01 08.70949 06 46 41.37 -50 24 03.2          17.7 TqEA075Q60
    CK17A030  C2017 01 08.71627 06 46 40.51 -50 23 56.8          17.9 TqEA075Q60
    CK17A030  C2017 01 08.72310 06 46 39.70 -50 23 50.9          17.5 TqEA075Q60
    CK17A030 KC2017 01 09.30490 06 45 33.84 -50 15 33.6          17.8 TqEA075W98
    CK17A030 KC2017 01 09.31345 06 45 32.79 -50 15 26.6          17.9 TqEA075W98
    CK17A030 KC2017 01 09.32200 06 45 31.82 -50 15 18.8          17.8 TqEA075W98
    CK17A030 OC2017 01 09.46859 06 45 15.54 -50 13 11.8          18.0 TUEA075Q62
    CK17A030 OC2017 01 09.47741 06 45 14.54 -50 13 04.0          18.2 TUEA075Q62
    CK17A030 OC2017 01 09.48632 06 45 13.56 -50 12 56.4          18.2 TUEA075Q62
    CK17A030  C2017 01 09.70858 06 44 48.21 -50 09 42.4          17.8 TqEA075Q60
    CK17A030  C2017 01 09.71560 06 44 47.45 -50 09 35.3          18.0 TqEA075Q60
    CK17A030  C2017 01 09.72245 06 44 46.62 -50 09 28.8          17.8 TqEA075Q60
    CK17A030 KC2017 01 10.28031 06 43 44.03 -50 01 17.3          17.9 TqEA075W98
    CK17A030 KC2017 01 10.28888 06 43 43.06 -50 01 09.5          17.9 TqEA075W98
    CK17A030 KC2017 01 10.29746 06 43 42.16 -50 01 02.5          18.0 TqEA075W98
 
Observer details:
807 Cerro Tololo.  Observers T. Linder, R. Holmes.  0.61-m f/6.5 astrograph
    + CCD.
E23 Arcadia.  Observer A. Hidas.  0.35-m f/1.9 reflector + CCD.
I47 Pierre Auger Observatory, Malargue.  Observer M. Masek.  0.3-m f/10
    reflector + CCD.
Q60 ISON-SSO Observatory, Siding Spring.  Observer L. Elenin.  0.4-m f/2.4
    reflector + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observers M. Urbanik, H. Sato,
    E. Guido, R. Ligustri, E. Bryssinck, G. van Buitenen, L. Buzzi, P. Concari,
    C. Cremaschini, S. Foglia, G. Galli, M. Tombelli, G. Baj, S. M. Tilley.
    0.15-m f/7 refractor + CCD, 0.43-m f/6.8 reflector + CCD, 0.50-m f/6.8
    astrograph + CCD + f/4.5 focal reducer, 0.51-m f/4.5 astrograph + CCD,
    0.51-m f/6.8 astrograph + CCD + f/4.5 focal reducer, 0.70-m f/6.6
    reflector + CCD.
W88 Slooh.com Chile Observatory, La Dehesa.  Observers B. Lutkenhoner,
    K. D. Breedlove.  0.35-m f/11 Schmidt-Cassegrain + CCD.
W96 CAO, San Pedro de Atacama (since 2013).  Observers A. Maury, J.-B. de
    Vanssay, J.-G. Bosch, J. B. Vanssay, J. F. Soulier.  Measurers J.-G. Bosch,
    J. F. Soulier.  0.4-m f/5.4 Ritchey-Chretien + CCD.
W98 Polonia Observatory, San Pedro de Atacama.  Observers M. Gedek,
    M. Zolnowski, M. Kusiak, R. Reszelewski.  Measurers M. Kusiak,
    R. Reszelewski.  0.25-m f/3.6 astrograph + CCD.
Y00 SONEAR Observatory, Oliveira.  Observers C. Jacques, E. Pimentel,
    J. Barros.  Measurer C. Jacques.  0.45-m f/2.9 reflector + CCD.
 
Orbital elements:
    C/2017 A3 (Elenin)
T 2017 Jan. 20.20584 TT                                 MPCW
q   3.9110363            (2000.0)            P               Q
                   Peri.  301.86870     -0.19566699     -0.01642393
                   Node    96.73373     +0.80011667     +0.57545602
e   1.0            Incl.   99.12534     -0.56703416     +0.81766780
>From 84 observations 2017 Jan. 5-10.

Ephemeris:
    C/2017 A3 (Elenin)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2016 12 12    07 41 17.3 -54 10 52   3.6864  3.9259    96.8    14.4  18.3
...
2016 12 27    07 11 51.0 -52 48 45   3.5742  3.9167   103.1    14.2  18.2
...
2017 01 04    06 55 48.6 -51 25 57   3.5294  3.9136   105.8    14.0  18.2
...
2017 01 10    06 44 15.7 -50 05 27   3.5046  3.9120   107.3    13.9  18.1
2017 01 11    06 42 24.1 -49 50 32   3.5012  3.9119   107.6    13.9  18.1
2017 01 12    06 40 33.9 -49 35 13   3.4981  3.9117   107.7    13.9  18.1
...
2017 01 18    06 30 02.8 -47 54 58   3.4845  3.9111   108.6    13.8  18.1
...
2017 01 26    06 17 37.0 -45 21 06   3.4808  3.9114   108.8    13.8  18.1
...
2017 02 10    05 59 58.0 -39 46 34   3.5205  3.9152   106.4    14.0  18.2

Gareth V. Williams           (C) Copyright 2017 MPC           M.P.E.C. 2017-A75




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