The PLANET name command is similar to the SOURCE command, but the object must be a Solar System body. No catalog is used. Known objects are: SUN, MOON, MERCURY, VENUS, MARS, JUPITER, SATURN, URANUS, NEPTUNE. PLANET with no argument compute positions for all these objects.
Just like SOURCE, the PLANET command updated a number of
ASTRO global variables (RA), DEC, AZIMUTH,
ELEVATION). A structure called astro%planet% is also
created, and contains all output values of the PLANET
In addition to the position, information is given on the planet's apparent size and position angle, its brightness temperature and flux at (sub)millimeter wavelengths, at the current frequency.