C/1999 K2 ( Ferris )

Japanese version
Home page
Updated on September 27, 1999

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* Profile

Discovery Date May 19, 1999
Magnitude 18.1 mag
Discoverer William D. Ferris (LONEOS)

* Pictures

* Orbital Elements

   The following improved orbital elements by Kenji Muraoka, are 
  from 90 observations  1999 May 19  to  Aug. 22, perturbations 
  by 9 Planets, Moon and 5 minor planets were taken into account.
   The mean residual is +/- 0.69 arc seconds.

      Epoch  =  1999 Apr. 12.0  TT       JDT = 2451280.5
          T  =  1999 Apr. 10.48873       +/- 0.07044 (m.e.) TT
       Peri. =    4.56506                +/- 0.00608
       Node  =  300.31861                +/- 0.00219   (2000.0)
       Incl. =   82.19189                +/- 0.00560
          q  =    5.2903914              +/- 0.0001858 AU
          e  =    0.9659754              +/- 0.0001730
        1/a  =   +0.0064314              +/- 0.0000327 1/AU
        ( P  =   1939 years )
  orig. 1/a  =   +0.006869 
  fut.  1/a  =   +0.007056 

* Finding Charts

* Magnitudes Graph

        m1 = 5.5 + 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.