| Planetary ephemeris library? [message #4067] |
Wed, 26 April 1995 00:00  |
anton
Messages: 15
Registered: April 1995
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Junior Member |
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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
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| Re: Planetary ephemeris library? [message #4126 is a reply to message #4067] |
Tue, 02 May 1995 00:00  |
chris
Messages: 22
Registered: October 1994
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Junior Member |
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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
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