C/1998 H1 ( Stonehouse )

Japanese version
Home page
Updated on March 26, 1999

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* Profile

Discovery Date April 22, 1998
Magnitude 12 mag
Discoverer Patrick L. Stonehouse

* Orbital Elements

   The following improved orbital elements, by Kenji Muraoka are 
  from 352 observations  1998 Apr. 26  to  July 20, perturbations
  by 9 Planets, Moon and 5 minor planets were taken into account.
   The mean residual is +/- 0.68 arc seconds.

      Epoch  =  1998 Apr. 17.0  TT       JDT = 2450920.5
          T  =  1998 Apr. 14.42482       +/- 0.00074 (m.e.) TT
       Peri. =    1.32431                +/- 0.00109
       Node  =  222.10887                +/- 0.00029   (2000.0)
       Incl. =  104.69219                +/- 0.00113
          q  =    1.4872838              +/- 0.0000145 AU
          e  =    0.9979059              +/- 0.0001737
        1/a  =   +0.0014080              +/- 0.0001168 1/AU
        ( P  =  18927 years )

* Finding Charts

* Magnitudes Graph

        m1 = 10.0 + 5 log d + 15.0 log r

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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.