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IAU Minor Planet Center

Minor Planet Center

MPEC 2005-J11 : COMET C/2005 H1 (LINEAR)

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M.P.E.C. 2005-J11                                Issued 2005 May 3, 18:09 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.

                  Supported in part by the Brinson Foundation
             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
          URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                           COMET C/2005 H1 (LINEAR)

Observations:
    CK05H010  C2005 04 30.32224 17 15 23.08 +48 04 20.5          20.3 N EJ011704
    CK05H010  C2005 04 30.33418 17 15 22.23 +48 04 19.6          20.2 N EJ011704
    CK05H010  C2005 04 30.34592 17 15 21.53 +48 04 18.4          20.5 N EJ011704
    CK05H010  C2005 04 30.99347 17 14 39.96 +48 04 25.6               N EJ011118
    CK05H010  C2005 05 01.00378 17 14 39.28 +48 04 26.0               N EJ011118
    CK05H010  C2005 05 01.00777 17 14 38.98 +48 04 25.6               N EJ011118
    CK05H010  C2005 05 02.20148 17 13 21.72 +48 04 22.3          19.9 N EJ011H36
    CK05H010  C2005 05 02.21736 17 13 20.73 +48 04 22.2          19.3 N EJ011H36
    CK05H010  C2005 05 02.25069 17 13 18.50 +48 04 26.0          18.4 N EJ011785
    CK05H010  C2005 05 02.26263 17 13 17.79 +48 04 25.2          18.3 N EJ011785
    CK05H010  C2005 05 02.27488 17 13 17.02 +48 04 23.5          17.9 N EJ011785
    CK05H010  C2005 05 02.28900 17 13 15.73 +48 04 21.5          18.3 N EJ011785
    CK05H010  C2005 05 02.30694 17 13 14.87 +48 04 22.7          19.0 T EJ011673
    CK05H010  C2005 05 02.32708 17 13 13.51 +48 04 22.7                 EJ011673
    CK05H010  C2005 05 02.35602 17 13 11.60 +48 04 22.5                 EJ011673
    CK05H010  C2005 05 02.37546 17 13 10.31 +48 04 22.4                 EJ011673
    CK05H010  C2005 05 02.46121 17 13 04.67 +48 04 21.6                 EJ011F65
    CK05H010  C2005 05 02.46256 17 13 04.58 +48 04 21.8                 EJ011F65
    CK05H010  C2005 05 02.46395 17 13 04.52 +48 04 21.7                 EJ011F65
    CK05H010  C2005 05 02.46534 17 13 04.43 +48 04 21.8                 EJ011F65
    CK05H010  C2005 05 02.78872 17 12 43.15 +48 04 16.2          19.6 N EJ011A50
    CK05H010  C2005 05 02.79311 17 12 42.87 +48 04 16.2          19.6 N EJ011A50
    CK05H010  C2005 05 02.79748 17 12 42.50 +48 04 16.1          19.0 N EJ011A50
    CK05H010  C2005 05 02.91260 17 12 34.86 +48 04 13.8                 EJ011J95
    CK05H010  C2005 05 02.92149 17 12 34.26 +48 04 12.9          19.4 N EJ011J95
    CK05H010  C2005 05 03.19664 17 12 16.17 +48 04 09.0          19.2 N EJ011649
    CK05H010  C2005 05 03.20078 17 12 15.91 +48 04 09.7          19.2 N EJ011649
    CK05H010  C2005 05 03.20493 17 12 15.61 +48 04 08.8          19.4 N EJ011649
    CK05H010  C2005 05 03.26238 17 12 11.97 +48 04 06.6          18.6 N EJ011785
    CK05H010  C2005 05 03.27014 17 12 10.89 +48 04 04.3          18.5 N EJ011785
    CK05H010  C2005 05 03.29827 17 12 09.30 +48 04 07.0          19.5 N EJ011734
    CK05H010  C2005 05 03.30708 17 12 08.78 +48 04 06.9          19.5 N EJ011734
    CK05H010  C2005 05 03.30914 17 12 08.81 +48 04 06.3          19.5 T EJ011673
    CK05H010  C2005 05 03.32338 17 12 07.84 +48 04 06.1                 EJ011673
    CK05H010  C2005 05 03.34815 17 12 06.17 +48 04 05.6                 EJ011673
    CK05H010  C2005 05 03.36609 17 12 04.94 +48 04 05.3                 EJ011673
    CK05H010  C2005 05 03.48191 17 11 57.29 +48 04 03.5                 EJ011F65
    CK05H010  C2005 05 03.48336 17 11 57.18 +48 04 03.1                 EJ011F65
    CK05H010  C2005 05 03.49757 17 11 56.23 +48 04 03.1                 EJ011F65
    CK05H010  C2005 05 03.49878 17 11 56.14 +48 04 03.4                 EJ011F65

Observer details:
118 Modra.  Observers S. Gajdos, J. Vilagi.  0.6-m f/5.5 reflector + CCD.
649 Powell Observatory, Louisburg.  Observer R. Trentman.  0.75-m Newtonian
    reflector + CCD.
673 Table Mountain Observatory, Wrightwood.  Observer J. Young.  0.6-m
    reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, R. Huber, L. Manguso, D. Torres, R. Kracke, M. McCleary,
    H. Stange, A. Milner.  Measurers J. Stuart, R. Sayer, J. Evans, J. Kommers.
    1.0-m f/2.15 reflector + CCD.
734 Farpoint Observatory.  Observer G. Hug.  0.7-m reflector + CCD.
785 Fitz-Randolph Observatory, Princeton.  Observer J. Maffei.  0.91-m f/13.6
    Cassegrain + CCD.
A50 Andrushivka Astronomical Observatory.  Observers Y. Ivashchenko,
    D. Kyrylenko.  0.6-m f/1.2 reflector + CCD.
F65 Haleakala-Faulkes Telescope North.  Observers A. Fitzsimmons, S. C. Lowry,
    C. Snodgrass.  2.0-m f/10.0 reflector + CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.3-m Schmidt-Cassegrain
    + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.30-m f/6.3 Schmidt-Cassegrain
    + CCD.

Orbital elements:
    C/2005 H1 (LINEAR)
T 2005 Feb. 25.833 TT                                   MPC
q   5.10555              (2000.0)            P               Q
                   Peri.  110.999       -0.231295       -0.306035
                   Node    68.371       -0.638464       -0.668485
e   1.0            Incl.   83.436       +0.734075       -0.677843
From 36 observations 2005 Apr. 30-May 3.

Ephemeris:
    C/2005 H1 (LINEAR)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2005 04 30    17 15.72   +48 04.2    4.741    5.128   107.1    10.8  18.5
2005 05 10    17 04.47   +47 57.1    4.710    5.136   109.5    10.7  18.5
2005 05 20    16 52.27   +47 28.0    4.694    5.145   111.0    10.6  18.5
2005 05 30    16 39.81   +46 35.2    4.694    5.154   111.6    10.5  18.5
2005 06 09    16 27.77   +45 18.3    4.712    5.165   111.1    10.6  18.5
2005 06 19    16 16.78   +43 39.0    4.748    5.178   109.6    10.7  18.5
2005 06 29    16 07.29   +41 40.5    4.802    5.191   107.0    10.8  18.6

Brian G. Marsden             (C) Copyright 2005 MPC           M.P.E.C. 2005-J11

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