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  • MPEC 2016-A124: COMET C/2015 X4 (ELENIN)

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    M.P.E.C. 2016-A124                               Issued 2016 Jan. 13, 05:03 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                               COMET C/2015 X4 (ELENIN)
    
    Observations:
        CK15X040  C2015 12 20.87069 05 51 45.57 +19 03 03.5          16.0 NqEA124K02
        CK15X040  C2015 12 20.87516 05 51 45.39 +19 03 01.4          16.2 NqEA124K02
        CK15X040  C2015 12 20.87970 05 51 45.23 +19 02 58.8          16.0 NqEA124K02
        CK15X040  C2015 12 28.79515 05 46 45.19 +17 55 18.0          16.0 TrEA124152
        CK15X040  C2015 12 28.80174 05 46 44.94 +17 55 14.8          16.1 TrEA124152
        CK15X040  C2015 12 28.81596 05 46 44.43 +17 55 07.5          16.2 TrEA124152
        CK15X040  C2015 12 29.45072 05 46 21.05 +17 49 51.4          16.6 TuEA124H15
        CK15X040  C2015 12 29.46038 05 46 20.64 +17 49 45.6          16.8 TuEA124H15
        CK15X040  C2015 12 29.47037 05 46 20.21 +17 49 40.7          16.7 TuEA124H15
        CK15X040  C2015 12 29.54449 05 46 17.87 +17 49 03.3          16.2 TmEA124349
        CK15X040  C2015 12 29.55493 05 46 17.49 +17 48 58.4                mEA124349
        CK15X040  C2015 12 29.62164 05 46 15.02 +17 48 25.6          16.4 TqEA124D29
        CK15X040  C2015 12 29.63849 05 46 14.38 +17 48 17.8          16.2 TqEA124D29
        CK15X040  C2015 12 29.65535 05 46 13.74 +17 48 09.2          16.4 TqEA124D29
        CK15X040  C2015 12 29.81565 05 46 08.10 +17 46 47.8          16.6 NqEA124C36
        CK15X040  C2015 12 29.81740 05 46 07.99 +17 46 47.2          16.8 NqEA124C36
        CK15X040  C2015 12 29.81914 05 46 07.93 +17 46 45.7          16.6 NqEA124C36
        CK15X040  C2015 12 29.82090 05 46 07.92 +17 46 46.3          16.8 NqEA124C36
        CK15X040  C2015 12 29.82668 05 46 07.70 +17 46 43.2          16.5 NqEA124C36
        CK15X040  C2015 12 29.82843 05 46 07.61 +17 46 41.4          16.8 NqEA124C36
        CK15X040  C2015 12 29.83106 05 46 07.47 +17 46 40.6          16.7 NqEA124C36
        CK15X040  C2015 12 29.83282 05 46 07.49 +17 46 39.4          16.6 NqEA124C36
        CK15X040  C2015 12 29.83457 05 46 07.38 +17 46 38.5          16.5 NqEA124C36
        CK15X040  C2015 12 29.99624 05 46 01.48 +17 45 18.3          16.5 NqEA124C23
        CK15X040  C2015 12 30.00093 05 46 01.24 +17 45 16.1          16.4 NqEA124C23
        CK15X040  C2015 12 30.00543 05 46 01.14 +17 45 14.1          16.1 NqEA124C23
        CK15X040  C2015 12 30.30283 05 45 50.34 +17 42 49.9          16.6 NqEA124W96
        CK15X040  C2015 12 30.32225 05 45 49.48 +17 42 40.2          16.5 NqEA124W96
        CK15X040 KC2015 12 30.85280 05 45 30.95 +17 38 14.5          16.0 ToEA124461
        CK15X040 KC2015 12 30.85767 05 45 30.78 +17 38 11.9                oEA124461
        CK15X040 KC2015 12 30.86252 05 45 30.58 +17 38 09.6                oEA124461
        CK15X040  C2015 12 31.02851 05 45 24.55 +17 36 47.3          16.6 NoEA124461
        CK15X040  C2015 12 31.03233 05 45 24.39 +17 36 46.0          16.8 NoEA124461
        CK15X040  C2015 12 31.03616 05 45 24.27 +17 36 43.7          16.7 NoEA124461
        CK15X040  C2015 12 31.03870 05 45 24.16 +17 36 42.6          16.7 NoEA124461
        CK15X040  C2015 12 31.04133 05 45 24.07 +17 36 41.2          16.7 NoEA124461
        CK15X040  C2015 12 31.04516 05 45 23.94 +17 36 39.4          16.6 NoEA124461
        CK15X040  C2015 12 31.04899 05 45 23.80 +17 36 37.5          16.7 NoEA124461
        CK15X040  C2015 12 31.05155 05 45 23.69 +17 36 36.1          16.8 NoEA124461
        CK15X040  C2015 12 31.05297 05 45 23.66 +17 36 35.5          16.7 NoEA124461
        CK15X040  C2015 12 31.05679 05 45 23.47 +17 36 33.8          16.8 NoEA124461
        CK15X040  C2015 12 31.06060 05 45 23.38 +17 36 31.6          16.7 NoEA124461
        CK15X040  C2015 12 31.06315 05 45 23.29 +17 36 30.6          16.7 NoEA124461
        CK15X040 tC2015 12 31.28859 05 45 15.46 +17 34 41.0          17.1 TuEA124926
        CK15X040 tC2015 12 31.29771 05 45 15.08 +17 34 36.2          17.1 TuEA124926
        CK15X040 tC2015 12 31.30932 05 45 14.65 +17 34 30.5          17.1 TuEA124926
        CK15X040  C2015 12 31.83932 05 44 56.21 +17 30 09.6          16.7 NcEA124B96
        CK15X040  C2015 12 31.84097 05 44 56.18 +17 30 08.6          16.7 NcEA124B96
        CK15X040  C2015 12 31.84263 05 44 56.10 +17 30 07.6          16.5 NcEA124B96
        CK15X040  C2015 12 31.84439 05 44 56.00 +17 30 07.6          16.6 NcEA124B96
        CK15X040  C2015 12 31.84604 05 44 55.97 +17 30 06.0          16.7 NcEA124B96
        CK15X040  C2015 12 31.94527 05 44 52.41 +17 29 17.9          16.4 NqEA124C10
        CK15X040  C2015 12 31.96611 05 44 51.67 +17 29 07.8          16.5 NqEA124C10
        CK15X040  C2015 12 31.98919 05 44 50.85 +17 28 56.2          16.3 NqEA124C10
        CK15X040  C2016 01 01.31596 05 44 39.62 +17 26 18.2          15.9 TLEA124T05
        CK15X040  C2016 01 01.33299 05 44 38.98 +17 26 10.3          15.9 TLEA124T05
        CK15X040  C2016 01 01.35084 05 44 38.36 +17 26 01.6          15.9 TLEA124T05
        CK15X040  C2016 01 01.36847 05 44 37.72 +17 25 53.2          15.9 TLEA124T05
        CK15X040  C2016 01 01.46423 05 44 34.48 +17 25 05.0          16.8 TqEA124D95
        CK15X040  C2016 01 01.47177 05 44 34.24 +17 25 01.1                qEA124D95
        CK15X040  C2016 01 01.47716 05 44 34.04 +17 24 58.5                qEA124D95
        CK15X040  C2016 01 01.57513 05 44 30.52 +17 24 11.4          16.3 TmEA124349
        CK15X040  C2016 01 01.58451 05 44 30.19 +17 24 06.9                mEA124349
        CK15X040  C2016 01 01.59392 05 44 29.85 +17 24 02.2                mEA124349
        CK15X040  C2016 01 02.34230 05 44 04.06 +17 17 59.0          16.2 NqEA124H45
        CK15X040  C2016 01 02.34560 05 44 03.96 +17 17 57.6          16.1 NqEA124H45
        CK15X040  C2016 01 02.34697 05 44 03.93 +17 17 56.8          16.1 NqEA124H45
        CK15X040 KC2016 01 03.49068 05 43 25.59 +17 08 47.2                uEA124367
        CK15X040 KC2016 01 03.49332 05 43 25.50 +17 08 46.1                uEA124367
        CK15X040 KC2016 01 03.49615 05 43 25.40 +17 08 44.8          16.2 TuEA124367
        CK15X040  C2016 01 03.57220 05 43 22.82 +17 08 08.9          16.3 NqEA124Q21
        CK15X040  C2016 01 03.57569 05 43 22.68 +17 08 07.0          16.4 NqEA124Q21
        CK15X040  C2016 01 04.12069 05 43 04.67 +17 03 50.6          16.5 NqEA124W96
        CK15X040  C2016 01 04.14083 05 43 03.95 +17 03 41.2          16.5 NqEA124W96
        CK15X040 KC2016 01 04.57970 05 42 49.55 +17 00 09.8                uEA124D81
        CK15X040 KC2016 01 04.59157 05 42 49.15 +17 00 03.9                uEA124D81
        CK15X040 KC2016 01 04.60349 05 42 48.83 +16 59 57.4                uEA124D81
        CK15X040 KC2016 01 04.61548 05 42 48.40 +16 59 53.1          16.1 TuEA124D81
        CK15X040 KC2016 01 06.92313 05 41 35.23 +16 41 53.4          16.7 NSEA124K25
        CK15X040 KC2016 01 06.93301 05 41 34.91 +16 41 49.3          17.1 NSEA124K25
        CK15X040  C2016 01 10.23362 05 39 57.58 +16 16 55.6          16.9 TREA124G45
        CK15X040  C2016 01 10.23490 05 39 57.55 +16 16 55.0          16.9 TREA124G45
        CK15X040  C2016 01 10.23763 05 39 57.45 +16 16 53.8          16.8 TREA124G45
        CK15X040  C2016 01 10.23837 05 39 57.45 +16 16 53.5          16.8 TREA124G45
        CK15X040  C2016 01 10.24170 05 39 57.33 +16 16 51.9          16.9 TREA124G45
        CK15X040  C2016 01 10.24244 05 39 57.33 +16 16 51.7          16.9 TREA124G45
        CK15X040  C2016 01 10.24618 05 39 57.20 +16 16 50.0          16.9 TREA124G45
        CK15X040  C2016 01 10.25184 05 39 57.04 +16 16 47.3          16.9 TREA124G45
        CK15X040  C2016 01 10.25579 05 39 56.92 +16 16 45.7          16.8 TREA124G45
        CK15X040  C2016 01 10.25983 05 39 56.80 +16 16 44.1          16.9 TREA124G45
        CK15X040  C2016 01 10.26119 05 39 56.78 +16 16 43.3          16.8 TREA124G45
        CK15X040  C2016 01 10.26409 05 39 56.67 +16 16 42.0          16.8 TREA124G45
        CK15X040  C2016 01 10.26534 05 39 56.66 +16 16 41.5          16.8 TREA124G45
        CK15X040  C2016 01 10.26819 05 39 56.56 +16 16 40.3          16.8 TREA124G45
        CK15X040  C2016 01 10.26944 05 39 56.53 +16 16 39.6          16.8 TREA124G45
        CK15X040  C2016 01 10.27234 05 39 56.43 +16 16 38.3          16.8 TREA124G45
        CK15X040  C2016 01 10.27364 05 39 56.40 +16 16 37.8          16.8 TREA124G45
        CK15X040  C2016 01 10.27759 05 39 56.30 +16 16 35.7          17.4 TREA124G45
        CK15X040  C2016 01 10.27766 05 39 56.29 +16 16 35.8          16.8 TREA124G45
        CK15X040 KC2016 01 10.54605 05 39 48.85 +16 14 36.9          16.9 NqEA124Q21
        CK15X040 KC2016 01 10.55507 05 39 48.57 +16 14 33.0          16.5 NqEA124Q21
    
    Observer details:
    152 Moletai Astronomical Observatory.  Observers K. Cernis, R. Janulis,
        H. Selevicius.  Measurer K. Cernis.  0.35-m f/3.5 reflector + CCD.
    349 Ageo.  Observer K. Kadota.  0.25-m f/5.0 reflector + CCD.
    367 Yatsuka.  Observer H. Abe.  0.26-m f/6.0 reflector + CCD.
    461 University of Szeged, Piszkesteto Stn. (Konkoly).  Observer K. Sarneczky.
        0.60-m Schmidt + CCD.
    926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
        M. Schwartz.  0.41-m f/3.75 astrograph + CCD.
    B96 Brixiis Observatory, Kruibeke.  Observer E. Bryssinck.  0.4-m f/3.8
        astrograph + CCD.
    C10 Maisoncelles.  Observer J.-F. Soulier.  0.30-m f/3.8 Newtonian reflector
        + CCD.
    C23 Olmen.  Measurer A. Diepvens.  0.20-m f/9 refractor + CCD.
    C36 Starry Wanderer Observatory, Baran'.  Observer S. Shurpakov.  0.25-m f/4.7
        Newtonian reflector + CCD.
    D29 Purple Mountain Observatory, XuYi Station.  Observers H. B. Zhao, B. Li,
        G. Zhaori, R. Q. Hong, L. F. Hu.  Measurers H. B. Zhao, B. Li. H. Lu,
        G. Zhaori.  1.04-m f/1.8 Schmidt + CCD.
    D81 Nagano.  Observer Y. Ohshima.  0.30-m f/4.6 reflector + CCD.
    D95 Kurihara.  Observer T. Takahashi.  0.25-m f/4.2 reflector + CCD.
    G45 Space Surveillance Telescope, Atom Site.  Observers M. Blythe, R. Brungard,
        P. Festler, T. McVey, J. Paige, G. Spitz.  Measurers M. Cornell, A. Klein,
        J. Ruprecht, G. Ushomirsky, J. Varey, D. Woods.  3.5-m f/1 reflector + CCD.
    H15 ISON-NM Observatory, Mayhill.  Observer L. Elenin.  0.4-m f/3 reflector
        + CCD.
    H45 Arkansas Sky Obs., Petit Jean Mountain South.  Observer P. C. Sherrod.
        Measurers P. C. Sherrod, L. P. Sherrod.  0.51-m f/4.3 astrograph + CCD.
    K02 Eastwood Observatory, Leigh on Sea.  Observer P. Carson.  0.32-m reflector
        + CCD + f/5.4 focal reducer.
    K25 Haute Provence Sud, Saint-Michel-l'Observatoire.  Observer L. Arnold.
        0.20-m f/5.5 Newtonian reflector + CCD.
    Q21 Southern Utsunomiya.  Observer H. Nohara.  0.4-m f/3.8 astrograph + CCD.
    T05 ATLAS-HKO, Haleakala.  Observers L. Denneau, A. Heinze, H. Weiland,
        B. Stalder, J. Tonry, A. Sherstyuk.  Measurers L. Denneau, A. Heinze,
        J. Tonry.  0.5-m f/2.0 Schmidt + CCD.
    W96 CAO, San Pedro de Atacama (since 2013).  Observers A. Maury, J.-G. Bosch.
        Measurer J.-G. Bosch.  0.4-m f/8 Ritchey-Chretien + CCD.
    
    Orbital elements:
        C/2015 X4 (Elenin)
    Epoch 2015 Oct. 25.0 TT = JDT 2457320.5
    T 2015 Nov. 3.47400 TT                                  MPCW
    q   3.3948234            (2000.0)            P               Q
    n   0.01275624     Peri.  176.33047     +0.18314690     -0.85314600
    a  18.1407104      Node   262.63622     +0.88896059     +0.35588135
    e   0.8128616      Incl.   29.50689     +0.41976932     -0.38143199
    P  77.3
    From 356 observations 2015 Nov. 24-2016 Jan. 10, mean residual 0".4.
    
        C/2015 X4 (Elenin)
    Epoch 2092 Jan. 14.0 TT = JDT 2485160.5
    T 2092 Jan. 22.44545 TT                                 MPCW
    q   3.3950964            (2000.0)            P               Q
    n   0.01277807     Peri.  176.26687     +0.18748091     -0.85242347
    a  18.1200382      Node   262.43896     +0.88798168     +0.35950721
    e   0.8126330      Incl.   29.49609     +0.41992791     -0.37964299
    P  77.1
    From 356 observations 2015 Nov. 24-2016 Jan. 10, mean residual 0".4.
    
        C/2015 X4 (Elenin)
    Epoch 2016 Jan. 13.0 TT = JDT 2457400.5
    T 2015 Nov. 3.49905 TT                                  MPCW
    q   3.3948395            (2000.0)            P               Q
    n   0.01276097     Peri.  176.33586     +0.18306569     -0.85316010
    a  18.1362228      Node   262.63626     +0.88899409     +0.35579904
    e   0.8128144      Incl.   29.50728     +0.41973380     -0.38147725
    P  77.2
    From 356 observations 2015 Nov. 24-2016 Jan. 10, mean residual 0".4.
    
    Ephemeris:
        C/2015 X4 (Elenin)
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
    2015 12 14    05 56 13.0 +20 03 36   2.4349  3.4119   171.6     2.4  17.3
    ...
    2015 12 29    05 46 37.6 +17 53 37   2.4571  3.4268   168.7     3.2  17.3
    ...
    2016 01 06    05 42 04.0 +16 49 04   2.4970  3.4365   159.8     5.7  17.3
    ...
    2016 01 12    05 39 09.4 +16 04 01   2.5391  3.4447   153.0     7.4  17.4
    2016 01 13    05 38 43.4 +15 56 49   2.5471  3.4461   151.9     7.7  17.4
    2016 01 14    05 38 18.4 +15 49 44   2.5553  3.4476   150.8     8.0  17.4
    ...
    2016 01 20    05 36 09.5 +15 09 14   2.6101  3.4567   144.2     9.6  17.5
    ...
    2016 01 28    05 34 18.5 +14 20 57   2.6962  3.4699   135.7    11.4  17.6
    ...
    2016 02 12    05 34 09.9 +13 07 43   2.8909  3.4980   120.6    14.1  17.7
    
    Gareth V. Williams           (C) Copyright 2016 MPC           M.P.E.C. 2016-A124
    

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