Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
I'm just wondering - is there any library which performs physical ephemeris calcualtions for planets. Like subearth/subsolar latitude/longitude, position angle etc. I wrote some extrapolation for Astronomical Almanac, but I don't like it. Thanks Anton -- Anton Ivanov Division of Geology and Planetary Science California Institute of Technology 170-25, Pasadena, CA, 91125, USA
Anton Ivanov (anton@mola.gps.caltech.edu) wrote: : I'm just wondering - is there any library which performs physical : ephemeris calcualtions for planets. Like subearth/subsolar latitude/longitude, : position angle etc. : I wrote some extrapolation for Astronomical Almanac, but I don't like it. I'm not sure if this is what you want, but I have written an IDL program which drives the JPL Planetary Ephemeris, (which you must download from navigator.Jpl.Nasa.Gov) Basically it gives the position and velocity of any planet w/ respect to any other planet, including the Solar System Barycenter, Earth-Moon barycenter & Moon. Presently, its setup in a somewhat machine specfic way, but I intend to make it portable in the near future. Let me know if this is what you want. -chris