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SSGEOM

SSGEOM

Name


  ssgeom

Purpose


  Compute Sun and Earth distance and phase angle for solar system object.

Description


Category


  Astronomy

Calling Sequence


  ssgeom,ephemeris,sun,earth,phang,elong

Inputs


  ephemeris - 8 by N array as returned from codes 20-22 of EPHEM

Optional Input Parameters


Keyword Input Parameters


Outputs


  sun - Object to Sun distance in AU.
  earth - Object to Earth distance in AU.
  phang - Sun - Object - Earth angle in degrees.
  elong - Object - Earth - Sun angle in degrees.

Keyword Output Parameters


Common Blocks


Side Effects


Restrictions


Procedure


Modification History


  93/10/28, Written by Marc W. Buie, Lowell Observatory
  94/08/05, MWB, fixed bug in calculation of ELONG
  2010/08/20, MWB, minor tweak to help eliminate spurious dimensions of;
                  returned information.



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