Home Manual Packages Global Index Keywords Quick Reference | # functions in kepler.i - s
sch_moon |
     sch_moon

    keyword,  defined at i/kepler.i   line 220
SEE | sch_planets
sch_planets |
                 sch_planets, sch_moon

      from "How to compute planetary positions",
      by Paul Schlyter of Stockholm, Sweden
      http://hotel04.ausys.se/pausch
      "Please note that the orbital elements of Uranus and Neptune as given
      here are somewhat less accurate.  They include a long period perturbation
      between Uranus and Neptune.  The period of the perturbation is about
      4200 years."
      After corrections in the case of the moon, jupiter, saturn, and uranus,
      these are claimed to be accurate to under 1 arc minute for the inner
      planets, about 1 arc minute for the outer planets, and 2 arc minutes
      for the moon.

    keyword,  defined at i/kepler.i   line 220
solar_system |
                 xyz = moon(time)

         return position XYZ of the moon relative to center of earth
         at TIME; the XYZ has leading dimension 3; x is along the vernal
         equinox, z is ecliptic north.  Corrections due to Schlyter (see
         sch_planets) are applied.  Claimed accurate to under 1 arc minute
         over some reasonable time.  TIME is in days since 0/Jan/00 (that is,
         0000 UT 31/Dec/99).  This is 1.5 days earlier than the J2000 epoch.

    interpreted function, defined at i/kepler.i   line 342
SEE ALSO: | solar_system, sch_moon, kepler