1 /**************************************************************************
3 * Written by Durk Talsma. Originally started October 1997, for distribution
4 * with the FlightGear project. Version 2 was written in August and
5 * September 1998. This code is based upon algorithms and data kindly
6 * provided by Mr. Paul Schlyter. (pausch@saaf.se).
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 **************************************************************************/
26 # define exception c_exception
30 #include "mercury.hxx"
32 /*************************************************************************
33 * Mercury::Mercury(double mjd)
34 * Public constructor for class Mercury
35 * Argument: The current time.
36 * the hard coded orbital elements for Mercury are passed to
37 * CelestialBody::CelestialBody();
38 ************************************************************************/
39 Mercury::Mercury(double mjd) :
40 CelestialBody (48.33130, 3.2458700E-5,
42 29.12410, 1.0144400E-5,
45 168.6562, 4.09233443680, mjd)
49 CelestialBody (48.33130, 3.2458700E-5,
51 29.12410, 1.0144400E-5,
54 168.6562, 4.09233443680)
57 /*************************************************************************
58 * void Mercury::updatePosition(double mjd, Star *ourSun)
60 * calculates the current position of Mercury, by calling the base class,
61 * CelestialBody::updatePosition(); The current magnitude is calculated using
62 * a Mercury specific equation
63 *************************************************************************/
64 void Mercury::updatePosition(double mjd, Star *ourSun)
66 CelestialBody::updatePosition(mjd, ourSun);
67 magnitude = -0.36 + 5*log10( r*R ) + 0.027 * FV + 2.2E-13 * pow(FV, 6);