Return basic info about one parameter of a celestial body.
The celestial bodies and parameters that almanac can return are shown when
invoking almanac without any parameters.
Input parameters:
- body - celestial body for which info is requested
(case-insensitive).
- param (optional) - the selected parameter whose value is
requested. If ’geoid’ or ’ellipsoid’ is specified a 1x2 vector comprising
the semimajor axis and eccentricity of body is returned. If ’Earth’
is selected, a specific geoid name can be specified and the semimajor
axis and eccentricity of that geoid are returned.
- unit (optional) - the unit in which the requested parameter is
expressed. Any unit recognized by function ’unitsratio’ is accepted.
almamanc is merely a wrapper around, resp. based on, referenceEllipsoid.
See also: referenceEllipsoid,referenceSphere,unitsratio.