Coordinate Frames
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Coordinate Frames
| J2000 | -- mean equator and equinox at J2000.0 (FK5) |
| JNAT | -- geocentric natural frame |
| JMEAN | -- mean equator and equinox at frame epoch |
| JTRUE | -- true equator and equinox at frame epoch |
| APP | -- apparent geocentric position |
| B1950 | -- mean epoch and ecliptic at B1950.0. The epoch is taken from the frame epoch; or from the aipsrc variable measures.b1950.d_epoch; or has default 2000.0 |
| B1950_VLA | -- mean epoch(1979.9)) and ecliptic at B1950.0 |
| BMEAN | -- mean equator and equinox at frame epoch |
| BTRUE | -- true equator and equinox at frame epoch |
| GALACTIC | -- galactic coordinates |
| HADEC | -- topocentric HA and declination |
| AZEL | -- topocentric Azimuth and Elevation (N through E) |
| AZELSW | -- topocentric Azimuth and Elevation (S through W) |
| AZELNE | -- topocentric Azimuth and Elevation (N through E) |
| AZELGEO | -- geodetic Azimuth and Elevation (N through E) |
| AZELSWGEO | -- geodetic Azimuth and Elevation (S through W) |
| AZELNEGEO | -- geodetic Azimuth and Elevation (N through E) |
| ECLIPTC | -- ecliptic for J2000 equator and equinox |
| MECLIPTIC | -- ecliptic for mean equator of date |
| TECLIPTIC | -- ecliptic for true equator of date |
| SUPERGAL | -- supergalactic coordinates |
| ITRF | -- coordinates wrt ITRF Earth frame |
| TOPO | -- apparent topocentric position |
| ICRS | -- International Celestial reference system |
Directions to Planets
| MERCURY | |
| VENUS | |
| MARS | |
| JUPITER | |
| SATURN | |
| URANUS | |
| NEPTUNE | |
| PLUTO | |
| SUN | |
| MOON | |
| COMET |
