def compute_lp_mhb2000(jc)
      return ((  1287104.79305   + \
              (129596581.0481    + \
              (       -0.5532    + \
              (        0.000136  + \
              (       -0.00001149) \
              * jc) * jc) * jc) * jc) % Const::TURNAS) * Const::AS2R
    rescue => e
      raise
    end
def compute_lp_mhb2000(jc)
      return ((  1287104.79305   + \
              (129596581.0481    + \
              (       -0.5532    + \
              (        0.000136  + \
              (       -0.00001149) \
              * jc) * jc) * jc) * jc) % Const::TURNAS) * Const::AS2R
    rescue => e
      raise
    end
=========================================================================
 Mean anomaly of the Sun (MHB2000)

 @param:  jc         (ユリウス世紀)
 @return: longitude  (rad)
=========================================================================