C/1997 L1 ( Zhu-Balam )

Japanese version
Home page
Updated on November 17, 1998

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* Profile

Discovery Date June 3, 1997
Magnitude 16.7 mag
Discoverer J. Zhu (Beijing Astronomical Observatory)

* Orbital Elements

   The following improved orbital elements by Kenji Muraoka, are 
  from 199 observations 1997 June 3 to 1998 Aug. 30, perturbations
  by 9 Planets, Moon and 5 minor planets were taken into account.
   The mean residual is +/- 0.70 arc seconds.


      Epoch  =  1996 Nov. 13.0  TT       JDT = 2450400.5
          T  =  1996 Nov. 22.70732       +/- 0.00558 (m.e.) TT
       Peri. =  346.34250                +/- 0.00065
       Node  =  233.29917                +/- 0.00048   (2000.0)
       Incl. =   72.98609                +/- 0.00055
          q  =    4.8992595              +/- 0.0000425 AU
          e  =    0.9981514              +/- 0.0000194
        1/a  =   +0.0003773              +/- 0.0000040 1/AU
  orig. 1/a  =   +0.000574  1/AU 
  fut.  1/a  =   +0.000906  1/AU 

* Finding Charts

* 1996 Jan. 8 - 1998 Nov. 13

* Magnitudes Graph

        m1 = 7.0 + 5 log d + 10.0 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.