PLANET

        [ASTRO\]PLANET [name] [/DRAW [Arg1 ... ArgN]] [/QUIET] [/BEAM beam]

    Compute the coordinates of a Solar System  object.  Known  objects  are:
    MOON, SUN, MERCURY, VENUS, MARS, JUPITER, SATURN, URANUS, NEPTUNE. If no
    name is entered, all objects are selected. The Option /DRAW is  used  to
    plot the object symbol on the screen.

    The  PLANET command output the planet coordinates (apparent RA, apparent
    DEC, Azimuth and Elevation at time of computation) and the sun  distance
    (with  a  warning  message  if this distance os lower than the telescope
    limit). PLANET also indicates the geocentric (DE) and heliocentric  (DS)
    distances  of the object (in AU), the apparent minor and major diameters
    (Min and Maj in arcsec), the position angle of the central meridian (PA,
    east  from north, in degrees), the brightness temperature (TB in K), the
    flux (S in Jy) at the current frequency, the  frequency  (in  GHz),  the
    beam  (in  arcsec), the main beam temperature (Tmb in K), the associated
    flux (in Jy) and the planet size convolved with the telescope beam (size
    in  arcsec).  The frequency can be entered by updating the variable FRE-
    QUENCY (in GHz). Without the option /BEAM, the beam used is deduced from
    the current observatory and frequency. User may override this default by
    giving non zero beam size (in arcsec) as an argument of  the  /BEAM  op-
    tion.

    All  these parameters are also also written in SIC variables, in the AS-
    TRO%PLANET% structure. Just enter EXAMINE ASTRO%PLANET% to  get  a  com-
    plete  list  of these variables. PLANET /QUIET suppresses all the print-
    outs on the screen.