neptune.cxx

/**************************************************************************
 * neptune.cxx
 * Written by Durk Talsma. Originally started October 1997, for distribution  
 * with the FlightGear project. Version 2 was written in August and 
 * September 1998. This code is based upon algorithms and data kindly 
 * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * $Id: neptune_8cxx-source.html,v 1.15 2007-12-17 15:37:07 curt Exp $
 **************************************************************************/

#ifdef __BORLANDC__
#  define exception c_exception
#endif
#include <math.h>

#include "neptune.hxx"

/*************************************************************************
 * Neptune::Neptune(double mjd)
 * Public constructor for class Neptune
 * Argument: The current time.
 * the hard coded orbital elements for Neptune are passed to 
 * CelestialBody::CelestialBody();
 ************************************************************************/
Neptune::Neptune(double mjd) :
  CelestialBody(131.7806,   3.0173000E-5,
                1.7700,    -2.550E-7,
                272.8461,  -6.027000E-6,        
                30.058260,  3.313E-8,
                0.008606,   2.150E-9,
                260.2471,   0.00599514700, mjd)
{
}
Neptune::Neptune() :
  CelestialBody(131.7806,   3.0173000E-5,
                1.7700,    -2.550E-7,
                272.8461,  -6.027000E-6,        
                30.058260,  3.313E-8,
                0.008606,   2.150E-9,
                260.2471,   0.00599514700)
{
}
/*************************************************************************
 * void Neptune::updatePosition(double mjd, Star *ourSun)
 * 
 * calculates the current position of Neptune, by calling the base class,
 * CelestialBody::updatePosition(); The current magnitude is calculated using 
 * a Neptune specific equation
 *************************************************************************/
void Neptune::updatePosition(double mjd, Star *ourSun)
{
  CelestialBody::updatePosition(mjd, ourSun);
  magnitude = -6.90 + 5*log10 (r*R) + 0.001 *FV;
}

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