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Backward scattering C/2007 N3 Lulin

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  • peterbus
    Dear all. In the period 2009 February 24 - March 4, C/2007 N3 Lulin reach a near backward scattering geometry (phase angle
    Message 1 of 1 , Jan 7, 2009
      Dear all.

      In the period 2009 February 24 - March 4, C/2007 N3 Lulin reach a near
      backward scattering geometry (phase angle < 10 degrees, with a minimum
      of 0.1 degrees (!) on Feb. 26.3).
      Using a linear phase coefficient of beta = 0.02, a maximum brightening
      of about 0.6 magnitudes on Feb. 26 is possible.
      In a moonless dark sky, there are good opportunities for photometric
      measurements.
      The so-called opposition effect, mainly observed between scatter angle
      173 and 180 degrees at moon and asteroids, is unlike.

      Clear Skies,

      Peter Bus

      Groningen, The Netherlands
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