C/1999 T1 ( McNaught-Hartley )

Japanese version
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Updated on November 14, 2001

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* Profile

Discovery Date October 7, 1999
Magnitude 15 mag
Discoverer Robert H. McNaught, Malcolm Hartley (Siding Spring Observatory)

* Orbital Elements

   The following improved orbital elements by Kenji Muraoka, 
  are from 357 observations  1999 Oct. 7  to  2001 Apr. 1, 
  including 9 Planets, Moon and 5 minor planets perturbations 
  and non-gravitational effect of style II.
   The mean residual is +/- 0.62 arc seconds.
 
      Epoch  =  2000 Dec.  2.0  TT       JDT = 2451880.5
          T  =  2000 Dec. 13.47107       +/- 0.00015 (m.e.) TT
       Peri. =  344.75707                +/- 0.00014
       Node  =  182.48248                +/- 0.00004   (2000.0)
       Incl. =   79.97493                +/- 0.00003
          q  =    1.1716855              +/- 0.0000021 AU
          e  =    0.9997929              +/- 0.0000033
        1/a  =   +0.0001768              +/- 0.0000028 1/AU
         A1  =   +3.87                   +/- 0.09
         A2  =   -1.2765                 +/- 0.0657
  orig. 1/a  =   +0.0011144 

* Finding Charts

* Magnitudes Graph

        m1 = 6.2 + 5 log d +  9.0 log r  [   ,  0]  (             - 2000 Dec. 13)
        m1 = 6.1 + 5 log d + 10.0 log r  [  0,230]  (2000 Dec. 13 - 2001 July 31)
        m1 = 8.0 + 5 log d + 10.0 log r  [230,   ]  (2001 July 31 -             )

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The orbital elements are calculated by Kenji Muraoka.
The charts are made with StellaNavigator Ver.2.0 for Windows (AstroArts / ASCII).
The magnitudes graphs are made with Comet for Windows.

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Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.