Astro::Coords::Planet - coordinates relating to planetary motion
$c = new Astro::Coords::Planet( 'uranus' );
This class is used by
Astro::Coords for handling coordinates for planets..
Instantiate a new object using the supplied options.
$c = new Astro::Coords::Planet( 'mars' );
Returns undef on error.
Retuns a list of supported planet names.
@planets = Astro::Coords::Planet->planets();
Return back 11 element array with first element containing the planet name.
This method returns a standardised set of elements across all types of coordinates.
Returns the generic type associated with the coordinate system. For this class the answer is always "RADEC".
This is used to aid construction of summary tables when using mixed coordinates.
It could be done using isa relationships.
Stringify overload. Simple returns the name of the planet in capitals.
Return a one line summary of the coordinates. In the future will accept arguments to control output.
$summary = $c->summary();
Returns the apparent angular planet diameter from the most recent calculation of the apparent RA/Dec.
$diam = $c->diam();
Returns the answer as a
Astro::Coords::Angle object. Note that this number is not updated automatically. (so don't change the time and expect to get the correct answer without first asking for a ra/dec calculation).
Return the apparent RA and Dec as two
Astro::Coords::Angle objects for the current coordinates and time.
($ra_app, $dec_app) = $self->apparent();
Radial velocity of the planet relative to the Earth geocentre.
Velocity definition. Always 'RADIO'.
Velocity reference frame. Always 'GEO'.
Overrided method to warn if
Astro::Coords::apply_offset is called on this subclass.
Usually called via
Astro::PAL is used for all internal astrometric calculations.
Tim Jenness <email@example.com>
Copyright (C) 2001-2005 Particle Physics and Astronomy Research Council. All Rights Reserved.
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