Description:This library is intended to provide the user with various ephemeris-generating routines, particularly in the calculation of planetary, solar, and lunar positions, and in the estimation of eclipse parameters. Most of the routines used may be found in Duffet-Smith (see the bibliography), although the iterative solution for Kepler's equation is found on pages 85-87 of the AE Roy reference, and none of the routines claim to be speedy or efficient -- mostly due to repeated calculations of positions with no saving of previous results. They have been tested against the examples provided in the sources and match with a reasonable amount of error (probably due to round-off in the examples). Planetary longitudes have been checked against the Menzel and Duffet-Smith sources at random, and are within a degree. A level of familiarity with astronomy and orbital mechanics is assumed.
Current version:1.0
Author:Keith J. Farmer: http://www.thuban.org
Downloaded file size:13,113 bytes
Size on calculator:6 KB
User rating:Not yet rated (you must be logged in to vote)
Primary category:Science/Astronomy
File date:2001/12/20 19:25:37
Source code:Included
Download count:5,851
Version history:2001/12/20: Added to site
Archive contents:
  Length      Date    Time    Name
---------  ---------- -----   ----
      161  1980-06-29 23:23   ephem1s.inf
    14556  1980-06-29 23:21   ephem1s.src
     6308  1980-06-29 22:54   ephem1s.lib
     7660  1980-06-29 23:19   ephem1s.txt
---------                     -------
    28685                     4 files
Library contents:ephem1s.lib: Library 1631, EPHEM :Ephemeris Lib
User comments:

No comments at this time.

You must be logged in to add your own comment.

Part of the HP Calculator Archive,
Copyright 1997-2021 Eric Rechlin.