avr-libc: ephemera_common.h Source File

avr-libc 2.0.0 Standard C library for AVR-GCC |

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ephemera_common.h
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