C/1987 W1 ( Ichimura )

Japanese version
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Updated on November 10, 2002

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* Profile

Discovery Date November 22, 1987
Magnitude 9 mag
Discoverer Yoshimi Ichimura (Yoshimi-machi, Saitama)

* Orbital Elements

          T = 1988 Jan. 10.100 ET    W = 329.317
                                     O = 225.800   1950.0
          q =   0.19951 AU           i =  41.564

* Magnitudes Graph

        m1 =  8.0 + 5 log d + 25   log r  [   ,-40]  (             - 1987 Dec.  1)
        m1 =  9.5 + 5 log d -  2.0 log r  [-40,  0]  (1987 Dec.  1 - 1988 Jan. 10)
        m1 = 25   + 5 log d + 20   log r  [  0,   ]  (1988 Jan. 10 -             )

        * Gray curve is:  m1 = 9.0 + 5 log d + 10.0 log r

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The orbital elements are printed on IAUC 4504.
The magnitudes graphs are made with Comet for Windows.

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