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Minor Planet Center

MPEC 2005-H17 : COMET C/2005 E2 (McNAUGHT)

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M.P.E.C. 2005-H17                                Issued 2005 Apr. 20, 14:41 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 E2 (McNAUGHT)

Observations:
    CK05E020   2005 03 18.83785 19 53 31.82 -35 45 01.6          18.0 T EH017372
    CK05E020   2005 04 04.80486 20 09 19.64 -35 40 42.9          17.1 T EH017372
    CK05E020  C2005 04 08.69047 20 12 37.91 -35 41 10.5          16.1 N EH017D82
    CK05E020  C2005 04 08.74250 20 12 40.41 -35 41 10.3          15.3 N EH017D82
    CK05E020  C2005 04 19.79972 20 21 15.85 -35 46 21.7          16.7 N EH017413
    CK05E020  C2005 04 19.80157 20 21 15.89 -35 46 21.8          16.6 N EH017413
    CK05E020  C2005 04 19.80342 20 21 15.97 -35 46 21.9          16.6 N EH017413

Observer details:
372 Geisei.  Observer T. Seki.  0.60-m f/3.5 reflector.
413 Siding Spring.  Observer R. H. McNaught.  1.0-m f/8 reflector + CCD.
D82 Wallaroo.  Observer M. Mattiazzo.  0.28-m f/3.3 Schmidt-Cassegrain + CCD.

Orbital elements:
    C/2005 E2 (McNaught)
T 2006 Feb. 23.3644 TT                                  MPC
q   1.517578             (2000.0)            P               Q
                   Peri.   40.0449      +0.8780968      -0.4744965
                   Node   347.8239      +0.3288976      +0.6921137
e   1.0            Incl.   16.9916      +0.3475233      +0.5439041
From 34 observations 2005 Mar. 12-Apr. 19.

Ephemeris:
    C/2005 E2 (McNaught)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2005 04 20    20 21.41   -35 46.5    3.915    4.054    90.7    14.3  14.5
2005 04 30    20 27.98   -35 56.8    3.677    3.958    98.8    14.6  14.3
2005 05 10    20 33.21   -36 13.1    3.443    3.862   107.1    14.5  14.1
2005 05 20    20 36.86   -36 36.0    3.216    3.765   115.6    14.0  13.8
2005 05 30    20 38.67   -37 05.2    3.001    3.668   124.2    13.2  13.5
2005 06 09    20 38.38   -37 40.1    2.800    3.571   133.0    12.0  13.3
2005 06 19    20 35.75   -38 18.8    2.616    3.473   141.9    10.4  13.0
2005 06 29    20 30.68   -38 57.8    2.454    3.375   150.3     8.6  12.7

Brian G. Marsden             (C) Copyright 2005 MPC           M.P.E.C. 2005-H17

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