rkepler 0.4.2

Astronomical almanac algorithms for the Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386

use crate::frame::constant::*;
use crate::math::angle::*;
use crate::phys_eph::phys_eph::PhysPrm;

pub fn sun() -> PhysPrm {
    PhysPrm {
        rad_mean: 695700.0 / AU,
        rad_equ: 695700.0 / AU,
        flatt_pol: 0.0,
        mag_v10: -26.78,
    }
}

pub fn mercury() -> PhysPrm {
    PhysPrm {
        rad_mean: 2439.4 / AU,
        rad_equ: 2440.53 / AU,
        flatt_pol: (2440.53 - 2438.26) / 2440.53,
        mag_v10: -0.42,
    }
}

pub fn vis_mag_mercury(dist_sun_body: f64, dist_obs_body: f64, phase_angl: f64) -> f64 {
    let phase_angl_d = phase_angl * RADDEG;
    let pp = mercury();
    let v_dist = pp.vis_mag(dist_sun_body, dist_obs_body);
    let v_phase = (3.8e-2 + (-2.73e-4 + 2.0e-6 * phase_angl_d) * phase_angl_d) * phase_angl_d;
    v_dist + v_phase
}

pub fn venus() -> PhysPrm {
    PhysPrm {
        rad_mean: 6051.8 / AU,
        rad_equ: 6051.8 / AU,
        flatt_pol: 0.0,
        mag_v10: -4.40,
    }
}

pub fn vis_mag_venus(dist_sun_body: f64, dist_obs_body: f64, phase_angl: f64) -> f64 {
    let phase_angl_d = phase_angl * RADDEG;
    let pp = venus();
    let v_dist = pp.vis_mag(dist_sun_body, dist_obs_body);
    let v_phase = (0.09e-2 + (2.39e-4 - 0.65e-6 * phase_angl_d) * phase_angl_d) * phase_angl_d;
    v_dist + v_phase
}

pub fn earth() -> PhysPrm {
    PhysPrm {
        rad_mean: 6371.0084 / AU,
        rad_equ: 6378.1366 / AU,
        flatt_pol: (6378.1366 - 6356.7519) / 6378.1366,
        mag_v10: -3.86,
    }
}

pub fn mars() -> PhysPrm {
    PhysPrm {
        rad_mean: 3389.50 / AU,
        rad_equ: 3396.19 / AU,
        flatt_pol: (3396.19 - 3376.20) / 3396.19,
        mag_v10: -1.52,
    }
}

pub fn vis_mag_mars(dist_sun_body: f64, dist_obs_body: f64, phase_angl: f64) -> f64 {
    let phase_angl_d = phase_angl * RADDEG;
    let pp = mars();
    let v_dist = pp.vis_mag(dist_sun_body, dist_obs_body);
    let v_phase = 0.016 * phase_angl_d;
    v_dist + v_phase
}

pub fn jupiter() -> PhysPrm {
    PhysPrm {
        rad_mean: 69911.0 / AU,
        rad_equ: 71492.0 / AU,
        flatt_pol: (71492.0 - 66854.0) / 71492.0,
        mag_v10: -9.40,
    }
}

pub fn vis_mag_jupiter(dist_sun_body: f64, dist_obs_body: f64, phase_angl: f64) -> f64 {
    let phase_angl_d = phase_angl * RADDEG;
    let pp = jupiter();
    let v_dist = pp.vis_mag(dist_sun_body, dist_obs_body);
    let v_phase = 0.005 * phase_angl_d;
    v_dist + v_phase
}

pub fn saturn() -> PhysPrm {
    PhysPrm {
        rad_mean: 58232.0 / AU,
        rad_equ: 60268.0 / AU,
        flatt_pol: (60268.0 - 54364.0) / 60268.0,
        mag_v10: -8.88,
    }
}

pub fn vis_mag_saturn(dist_sun_body: f64, dist_obs_body: f64, phase_angl: f64, lat_sep: f64) -> f64 {
    let phase_angl_d = phase_angl * RADDEG;
    let pp = saturn();
    let v_dist = pp.vis_mag(dist_sun_body, dist_obs_body);
    let v_phase = 0.044 * phase_angl_d;
    let v_ring = vis_mag_satring(lat_sep);
    v_dist + v_phase + v_ring
}

pub fn saturn_ring() -> PhysPrm {
    PhysPrm {
        rad_mean: 136770.0 / AU,
        rad_equ: 136770.0 / AU,
        flatt_pol: 0.0,
        mag_v10: 0.0,
    }
}

pub fn vis_mag_satring(lat_sep: f64) -> f64 {
    let sinb = lat_sep.abs().sin();
    -2.60 * sinb + 1.25 * sinb * sinb
}

pub fn satring_opening(lat_sep: f64) -> f64 {
    lat_sep.abs().sin()
}

pub fn uranus() -> PhysPrm {
    PhysPrm {
        rad_mean: 25362.0 / AU,
        rad_equ: 25559.0 / AU,
        flatt_pol: (25559.0 - 24973.0) / 25559.0,
        mag_v10: -7.19,
    }
}

pub fn vis_mag_uranus(dist_sun_body: f64, dist_obs_body: f64, phase_angl: f64) -> f64 {
    let phase_angl_d = phase_angl * RADDEG;
    let pp = uranus();
    let v_dist = pp.vis_mag(dist_sun_body, dist_obs_body);
    let v_phase = 0.0028 * phase_angl_d;
    v_dist + v_phase
}

pub fn neptune() -> PhysPrm {
    PhysPrm {
        rad_mean: 24622.0 / AU,
        rad_equ: 24764.0 / AU,
        flatt_pol: (24764.0 - 24341.0) / 24764.0,
        mag_v10: -6.87,
    }
}

pub fn moon() -> PhysPrm {
    PhysPrm {
        rad_mean: 1737.4 / AU,
        rad_equ: 1737.4 / AU,
        flatt_pol: 0.0,
        mag_v10: 0.21,
    }
}

pub fn vis_mag_moon(dist_sun_body: f64, dist_obs_body: f64, phase_angl: f64) -> f64 {
    let phase_angl_d = phase_angl * RADDEG;
    let pp = moon();
    let v_dist = pp.vis_mag(dist_sun_body, dist_obs_body);
    let v_phase = (3.38e-2 + (-1.07e-4 + 0.99e-6 * phase_angl_d) * phase_angl_d) * phase_angl_d;
    v_dist + v_phase
}

pub fn phobos() -> PhysPrm {
    PhysPrm {
        rad_mean: 11.08 / AU,
        rad_equ: 13.0 / AU,
        flatt_pol: (13.0 - 9.1) / 13.0,
        mag_v10: 11.80,
    }
}

pub fn deimos() -> PhysPrm {
    PhysPrm {
        rad_mean: 6.2 / AU,
        rad_equ: 7.8 / AU,
        flatt_pol: (7.8 - 5.1) / 7.8,
        mag_v10: 12.89,
    }
}

pub fn io() -> PhysPrm {
    PhysPrm {
        rad_mean: 1821.49 / AU,
        rad_equ: 1829.4 / AU,
        flatt_pol: (1829.4 - 1815.7) / 1829.4,
        mag_v10: -1.68,
    }
}

pub fn europa() -> PhysPrm {
    PhysPrm {
        rad_mean: 1560.8 / AU,
        rad_equ: 1562.6 / AU,
        flatt_pol: (1562.6 - 1559.5) / 1562.6,
        mag_v10: -1.41,
    }
}

pub fn ganymede() -> PhysPrm {
    PhysPrm {
        rad_mean: 2631.2 / AU,
        rad_equ: 2631.2 / AU,
        flatt_pol: 0.0,
        mag_v10: -2.09,
    }
}

pub fn callisto() -> PhysPrm {
    PhysPrm {
        rad_mean: 2410.3 / AU,
        rad_equ: 2410.3 / AU,
        flatt_pol: 0.0,
        mag_v10: -1.05,
    }
}

pub fn amalthea() -> PhysPrm {
    PhysPrm {
        rad_mean: 83.5 / AU,
        rad_equ: 125.0 / AU,
        flatt_pol: (125.0 - 64.0) / 125.0,
        mag_v10: 7.40,
    }
}

pub fn himalia() -> PhysPrm {
    PhysPrm {
        rad_mean: 85.0 / AU,
        rad_equ: 85.0 / AU,
        flatt_pol: 0.0,
        mag_v10: 8.14,
    }
}

pub fn mimas() -> PhysPrm {
    PhysPrm {
        rad_mean: 198.2 / AU,
        rad_equ: 207.8 / AU,
        flatt_pol: (207.8 - 190.6) / 207.8,
        mag_v10: 3.30,
    }
}

pub fn enceladus() -> PhysPrm {
    PhysPrm {
        rad_mean: 252.1 / AU,
        rad_equ: 256.6 / AU,
        flatt_pol: (256.6 - 248.3) / 256.6,
        mag_v10: 2.10,
    }
}

pub fn tethys() -> PhysPrm {
    PhysPrm {
        rad_mean: 531.0 / AU,
        rad_equ: 538.4 / AU,
        flatt_pol: (538.4 - 526.3) / 538.4,
        mag_v10: 0.60,
    }
}

pub fn dione() -> PhysPrm {
    PhysPrm {
        rad_mean: 561.4 / AU,
        rad_equ: 563.4 / AU,
        flatt_pol: (563.4 - 559.6) / 563.4,
        mag_v10: 0.88, //0.8
    }
}

pub fn rhea() -> PhysPrm {
    PhysPrm {
        rad_mean: 763.5 / AU,
        rad_equ: 765.0 / AU,
        flatt_pol: (765.0 - 762.4) / 765.0,
        mag_v10: 0.16, //0.1
    }
}

pub fn titan() -> PhysPrm {
    PhysPrm {
        rad_mean: 2575.0 / AU,
        rad_equ: 2575.15 / AU,
        flatt_pol: (2575.15 - 2574.47) / 2575.15,
        mag_v10: -1.28,
    }
}

pub fn hyperion() -> PhysPrm {
    PhysPrm {
        rad_mean: 135.0 / AU,
        rad_equ: 180.1 / AU,
        flatt_pol: (180.1 - 102.7) / 180.1,
        mag_v10: 4.63,
    }
}

pub fn iapetus() -> PhysPrm {
    PhysPrm {
        rad_mean: 734.7 / AU,
        rad_equ: 745.7 / AU,
        flatt_pol: (745.7 - 712.1) / 745.7,
        mag_v10: 1.50,
    }
}

pub fn janus() -> PhysPrm {
    PhysPrm {
        rad_mean: 89.2 / AU,
        rad_equ: 101.7 / AU,
        flatt_pol: (101.7 - 76.3) / 101.7,
        mag_v10: 4.40,
    }
}

pub fn ariel() -> PhysPrm {
    PhysPrm {
        rad_mean: 578.9 / AU,
        rad_equ: 581.1 / AU,
        flatt_pol: (581.1 - 577.7) / 581.1,
        mag_v10: 1.45,
    }
}

pub fn umbriel() -> PhysPrm {
    PhysPrm {
        rad_mean: 584.7 / AU,
        rad_equ: 584.7 / AU,
        flatt_pol: 0.0,
        mag_v10: 2.10,
    }
}

pub fn titania() -> PhysPrm {
    PhysPrm {
        rad_mean: 788.9 / AU,
        rad_equ: 788.9 / AU,
        flatt_pol: 0.0,
        mag_v10: 1.02,
    }
}

pub fn oberon() -> PhysPrm {
    PhysPrm {
        rad_mean: 761.9 / AU,
        rad_equ: 761.9 / AU,
        flatt_pol: 0.0,
        mag_v10: 1.23,
    }
}

pub fn triton() -> PhysPrm {
    PhysPrm {
        rad_mean: 1352.6 / AU,
        rad_equ: 1352.6 / AU,
        flatt_pol: 0.0,
        mag_v10: -1.24,
    }
}

pub fn pluto() -> PhysPrm {
    PhysPrm {
        rad_mean: 1188.3 / AU,
        rad_equ: 1188.3 / AU,
        flatt_pol: 0.0,
        mag_v10: -1.01, //-0.44
        // mag_pha1: 0.0,  //0.15
    }
}

pub fn ceres() -> PhysPrm {
    PhysPrm {
        rad_mean: 470.0 / AU,
        rad_equ: 487.3 / AU,
        flatt_pol: (487.3 - 446.0) / 487.3,
        mag_v10: 3.33, //3.54
        //mag_pha1: 0.12, //0.15
    }
}