• Processing (Info)

    • MPEC 2016-C33 : COMET C/2015 XY1 (Lemmon)

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    M.P.E.C. 2016-C33                                Issued 2016 Feb. 4, 14:44 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 XY1 (Lemmon)

Observations:
    CK15X01Y  C2016 02 04.37574 08 53 57.34 +34 26 23.6          19.5 TqEC033G96
    CK15X01Y  C2016 02 04.38430 08 53 56.97 +34 26 24.1          19.6 TqEC033G96
    CK15X01Y  C2016 02 04.39022 08 53 56.675+34 26 24.85         20.0 TLEC033F51
    CK15X01Y  C2016 02 04.39286 08 53 56.53 +34 26 24.8          19.8 TqEC033G96
    CK15X01Y  C2016 02 04.40197 08 53 56.106+34 26 25.67         19.9 TLEC033F51
    CK15X01Y  C2016 02 04.41373 08 53 55.541+34 26 26.55         20.0 TLEC033F51
    CK15X01Y  C2016 02 04.42550 08 53 54.978+34 26 27.37         20.1 TLEC033F51

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers B. Gibson, T. Goggia, N. Primak,
    A. Schultz, M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau,
    H. Flewelling, M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters,
    R. Weryk.  1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  Measurers E. J. Christensen,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
    S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
    1.5-m reflector + CCD.

Orbital elements:
    C/2015 XY1 (Lemmon)
Epoch 2018 May 2.0 TT = JDT 2458240.5
T 2018 Apr. 29.92102 TT                                 MPCW
q   7.9250338            (2000.0)            P               Q
z  -0.0007511      Peri.  196.38157     +0.04331214     +0.86105003
 +/-0.0002199      Node   281.61243     +0.96482566     +0.09557635
e   1.0059526      Incl.  148.85137     +0.25929810     -0.49945771
From 41 observations 2015 Dec. 4-2016 Feb. 4, mean residual 0".4.

    C/2015 XY1 (Lemmon)
Epoch 2016 Jan. 13.0 TT = JDT 2457400.5
T 2018 Apr. 30.47847 TT                                 MPCW
q   7.9259885            (2000.0)            P               Q
z  -0.0004257      Peri.  196.39877     +0.04343995     +0.86087691
 +/-0.0002199      Node   281.61712     +0.96488162     +0.09543309
e   1.0033745      Incl.  148.83143     +0.25906837     -0.49978343
From 41 observations 2015 Dec. 4-2016 Feb. 4, mean residual 0".4.

Ephemeris:
    C/2015 XY1 (Lemmon)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2016 01 05    09 16 50.2 +33 28 19   8.5751  9.4247   148.2     3.2  19.9
...
2016 01 20    09 06 00.4 +34 01 46   8.4428  9.3775   160.8     2.0  19.9
...
2016 01 28    08 59 47.9 +34 16 05   8.4042  9.3525   163.5     1.7  19.8
...
2016 02 03    08 55 03.0 +34 24 42   8.3902  9.3339   162.3     1.8  19.8
2016 02 04    08 54 15.3 +34 25 56   8.3891  9.3308   161.8     1.9  19.8
2016 02 05    08 53 27.6 +34 27 08   8.3884  9.3277   161.3     1.9  19.8
...
2016 02 11    08 48 42.6 +34 33 00   8.3915  9.3092   157.2     2.4  19.8
...
2016 02 19    08 42 30.0 +34 37 26   8.4148  9.2846   150.1     3.0  19.8
...
2016 03 05    08 31 40.5 +34 35 14   8.5123  9.2390   134.9     4.4  19.8

Gareth V. Williams           (C) Copyright 2016 MPC           M.P.E.C. 2016-C33

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