C/2002 E2 Snyder-Murakami

Pictures taken by D. Snyder

Sketches drawn by S. Murakami

Images

If you plan to republish any of the images presented here, you must obtain permission from the person who took the image.

 Yusuke Ezaki
 Japan
 Mar 12.83 2002 UT 
  Nakagawa Science Center
 Japan
 Mar 13 2002 UT
 Takuo Kojima
 Japan
 Mar 16.82 2002 UT
 Tim Hunter
 USA
 Mar 18 2002 UT
 Observatorio de Begues
 Spain
 Mar 21 2002 UT
 Michael Jager
 Austria
 Apr 13.08 2002 UT

 The comet is lower left.
 H. Mikuz
 Crni Vrh Observatory
 Slovenia
 May 5 2002 UT
 Michael Jager
 Austria
 May 15.68 2002 UT
 Yuuji  Ohshima
 Japan
 Jun 2.6 2002 UT
 Yusuke Ezaki
 Japan
 Jan 8.41 2003 UT

 The last observation in the world.



Light curve      

        m1 =  5.5 + 5 log d + 20.0 log r  [   ,170]  (             - 2002 Aug. 10)
        m1 = 16.2 + 5 log d -  5.0 log r  [170,280]  (2002 Aug. 10 - 2002 Nov. 28)
        m1 =  7.5 + 5 log d + 10.0 log r  [280,   ]  (2002 Nov. 28 -             )

 
Courtesy of Seiichi Yoshida

It was strange that the brightness increased in fall 2002. We do not know what happened.


Orbit



The positions of the comet and Planets at the date of discovery are shown.

This figure is produced using  OrbitViewer : Copyright(c) 1996-2001 Osamu Ajiki (AstroArts Inc.)

Orbital elements

The following improved orbital elements by Kenji Muraoka, are from 801 observations 2002 Mar. 12 to 2003 Jan. 8, perturbations by 9 Planets,  Moon and 5 minor planets were taken into account.
The mean residual is +/-0.62 arc seconds.
      Epoch  =  2002 Feb. 15.0  TT       JDT = 2452320.5
            T  =  2002 Feb. 21.79507       +/- 0.00010 (m.e.) TT
             Peri. =    9.03557                +/- 0.00007
           Node  =  244.58352                +/- 0.00003   (2000.0)
              Incl. =   92.54568                +/- 0.00004
                q  =    1.4664507              +/- 0.0000009 AU
                e  =    1.0008291              +/- 0.0000035
             1/a  =   -0.0005654              +/- 0.0000024 1/AU
       orig. 1/a  =   +0.0000445
       fut.  1/a  =   -0.0004242



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