C/1998 J1 ( SOHO )

Japanese version
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Updated on January 1, 2005

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* Profile

Discovery Date May 3, 1998
Magnitude mag 0 and possibly brighter
Discoverer SOHO-LASCO coronagraph C3

* Pictures

* Orbital Elements

   The following improved orbital elements by Kenji Muraoka, are 
  from 196 observations  1998 May 20  to  Aug.  5, perturbations 
  by 9 Planets, Moon and 5 minor planets were taken into account.
   The mean residual is +/- 0.70 arc seconds.

      Epoch  =  1998 May  27.0  TT       JDT = 2450960.5
          T  =  1998 May   8.61890       +/- 0.00016 (m.e.) TT
       Peri. =  110.55820                +/- 0.00095
       Node  =  351.64727                +/- 0.00173   (2000.0)
       Incl. =   62.93174                +/- 0.00019
          q  =    0.1532152              +/- 0.0000005 AU
          e  =    1.0001781              +/- 0.0000134
        1/a  =   -0.0011623              +/- 0.0000875 1/AU
  orig. 1/a  =   -0.000434  1/AU 
  fut.  1/a  =   -0.001014  1/AU 

* Finding Charts

* Magnitudes Graph

        m1 = 5.6 + 5 log d + 10.0 log r  [  , 0]  (             - 1998 May   8)
        m1 = 6.2 + 5 log d +  6.0 log r  [ 0,50]  (1998 May   8 - 1998 June 27)
        m1 = 4.0 + 5 log d + 20.0 log r  [50,  ]  (1998 June 27 -             )

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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.