calceph

C library for accessing binary planetary ephemeris files

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C library to access the binary planetary ephemeris files

calceph

Query planetary position at a specific Julian date$ calceph -jd 2451545.0 -body 1 -unit km

Load ephemeris file and retrieve Mercury coordinates$ calceph -f ephemeris.bin -jd 2451545.0 -body 1

Get Earth position in AU units for a date range$ calceph -jd 2451545.0 -body 3 -unit au