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Reads, writes and interpolates planetary positions using JPL's ephemeris files

'Ephemeris' reads, writes, and interpolates the JPL planetary ephemeris data that is the world standard planetary dataset. It should compile on any machine that uses gcc and supports IEEE floating point arithmetic, and has been tested under GNU/Linux. It uses an included library, gnulliver.c, that automatically handles integer and floating point Big-endian/Little-endian byte swapping to match Big-endian/network order on any computer. gnulliver.c can be used separately under the LGPL 2.1. This is a redesign of JPL's original FORTRAN code, available on JPL's FTP website (ftp://ssd.jpl.nasa.gov/pub/eph/export/), with some added flexibility (including patching some inconsistencies in the original JPL data files). 'Ephemeris' is not associated with JPL or NASA, but just uses JPL's data.


User README included and available from http://www.ephemeris.com/README.txt


Download version 1.0 (beta)
released on 22 May 2004


Related Projects


LicenseVerified byVerified onNotes
LGPLv2.1Janet Casey24 May 2004

Leaders and contributors

Paul Hardy Maintainer

Resources and communication

AudienceResource typeURI
Bug TrackingVCS Repository Webviewhttp://www.ephemeris.com/software.html
Bug Tracking,Developer,SupportE-mailmailto:bugs@ephemeris.com

Software prerequisites

Required to buildmake

This entry (in part or in whole) was last reviewed on 14 March 2017.


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