1 /* 2 * (C)2012 Michael Duane Rice All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * Redistributions of source code must retain the above copyright notice, this 9 * list of conditions and the following disclaimer. Redistributions in binary 10 * form must reproduce the above copyright notice, this list of conditions 11 * and the following disclaimer in the documentation and/or other materials 12 * provided with the distribution. Neither the name of the copyright holders 13 * nor the names of contributors may be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* $Id: ephemera_common.h 2345 2013-04-11 23:58:48Z swfltek $ */ 30 31 #ifndef EPHEMERA_PRIVATE_H 32 #define EPHEMERA_PRIVATE_H 33 34 #define TROP_YEAR 31556925 35 #define ANOM_YEAR 31558433 36 #define INCLINATION 0.409105176667471 /* Earths axial tilt at the epoch */ 37 #define PERIHELION 31316400 /* perihelion of 1999, 03 jan 13:00 UTC */ 38 #define SOLSTICE 836160 /* winter solstice of 1999, 22 Dec 07:44 UTC */ 39 #define TWO_PI 6.283185307179586 40 #define TROP_CYCLE 5022440.6025 41 #define ANOM_CYCLE 5022680.6082 42 #define DELTA_V 0.03342044 /* 2x orbital eccentricity */ 43 44 #endif 45