C/1998 Y1 ( LINEAR )

Japanese version
Home page
Updated on July 11, 1999

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* Profile

Discovery Date December 22, 1998
Magnitude 18.5 mag
Discoverer Lincoln Laboratory Near-Earth Asteroid Research project

* Pictures

* Orbital Elements

   The following improved orbital elements by Kenji Muraoka, are
  from 117 observations 1998 Dec. 22 to 1999 Apr. 16, perturbations
  by 9 Planets, Moon and 5 minor planets were taken into account. 
   The mean residual is +/- 0.63 arc seconds.

      Epoch  =  1998 Nov.  3.0  TT       JDT = 2451120.5
          T  =  1998 Nov. 21.57758       +/- 0.00084 (m.e.) TT
       Peri. =  339.84128                +/- 0.00050
       Node  =   98.85877                +/- 0.00062   (2000.0)
       Incl. =   28.10831                +/- 0.00022
          q  =    1.7469867              +/- 0.0004469 AU
          e  =    0.9238893              +/- 0.0000137
          a  =   22.9532341              +/- 0.0041705 AU
          n  =    0.00896269             +/- 0.00000244
          P  =  109.968                  +/- 0.0299710  years
                                        (+/-11.0 days)

* Finding Charts

* Magnitudes Graph

        m1 = 13.2 + 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.