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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.
Subsections
Gildas manager
2024-04-19