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Astro::Coords::Planet(3) User Contributed Perl Documentation Astro::Coords::Planet(3)

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..

new
Instantiate a new object using the supplied options.

  $c = new Astro::Coords::Planet( 'mars' );
    

Returns undef on error.

planets
Retuns a list of supported planet names.

 @planets = Astro::Coords::Planet->planets();
    

planet
Returns the name of the planet.
name
For planets, the name is always just the planet name.

array
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.

type
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
Stringify overload. Simple returns the name of the planet in capitals.
summary
Return a one line summary of the coordinates. In the future will accept arguments to control output.

  $summary = $c->summary();
    
diam
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).

apparent
Return the apparent RA and Dec as two "Astro::Coords::Angle" objects for the current coordinates and time.

 ($ra_app, $dec_app) = $self->apparent();
    
rv
Radial velocity of the planet relative to the Earth geocentre.
vdefn
Velocity definition. Always 'RADIO'.
vframe
Velocity reference frame. Always 'GEO'.
apply_offset
Overrided method to warn if "Astro::Coords::apply_offset" is called on this subclass.

Usually called via "Astro::Coords".

"Astro::PAL" is used for all internal astrometric calculations.

Tim Jenness <t.jenness@cpan.org>

Copyright (C) 2001-2005 Particle Physics and Astronomy Research Council. All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place,Suite 330, Boston, MA 02111-1307, USA

2022-04-08 perl v5.32.1

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