| 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  
 |