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Last change
on this file since 3700 was
3175,
checked in by emillour, 23 months ago
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Pluto PCM:
Add the old Pluto LMDZ for reference (required prior step to making
an LMDZ.PLUTO using the same framework as the other physics packages).
TB+EM
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File size:
1.5 KB
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| 1 | SUBROUTINE orbitetriton(pls,pzday,pdist_sol,pdecli) |
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| 2 | use planet_h |
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| 3 | IMPLICIT NONE |
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| 4 | |
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| 5 | c======================================================================= |
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| 6 | c |
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| 7 | c Objet: |
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| 8 | c ------ |
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| 9 | c |
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| 10 | c Distance from sun and declination as a function of the solar |
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| 11 | c longitude Ls and pday |
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| 12 | c |
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| 13 | c Input: |
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| 14 | c ------ |
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| 15 | c pls Ls |
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| 16 | c pzday |
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| 17 | c |
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| 18 | c Output: |
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| 19 | c ------- |
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| 20 | c pdist_sol Distance Sun-Planet in UA |
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| 21 | c pdecli declinaison ( en radians ) |
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| 22 | c |
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| 23 | c======================================================================= |
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| 24 | c Declarations: |
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| 25 | c ------------- |
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| 26 | |
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| 27 | !#include "planete.h" |
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| 28 | #include "comcstfi.h" |
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| 29 | |
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| 30 | c arguments: |
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| 31 | c ---------- |
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| 32 | |
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| 33 | REAL pzday,pdist_sol,pdecli,pls |
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| 34 | |
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| 35 | c local variables: |
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| 36 | c---------------- |
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| 37 | REAL AA,BB,CC |
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| 38 | REAL zanneedebut,zan,zalpha0,zalpha1,zbeta0,zbeta1,zint |
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| 39 | REAL zanneereference |
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| 40 | |
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| 41 | c-------------------------------------------------------------------- |
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| 42 | c Initialisations |
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| 43 | |
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| 44 | AA=0.429870 |
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| 45 | BB=0.370543 |
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| 46 | CC=0.0225091 |
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| 47 | zalpha0 = 61.52577*pi/180. |
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| 48 | zalpha1 = 0.038142 |
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| 49 | zbeta0 = -100.79473*pi/180. |
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| 50 | zbeta1 = 0.009131 |
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| 51 | zanneedebut = 0. |
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| 52 | zanneereference = 0. |
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| 53 | |
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| 54 | c Distance Sun-Planet |
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| 55 | |
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| 56 | pdist_sol=p_elips/(1.+e_elips*cos(pls+timeperi)) |
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| 57 | |
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| 58 | c Solar declination |
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| 59 | |
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| 60 | zan = zanneedebut+(pzday*daysec/31557595.)-zanneereference |
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| 61 | zint = AA * cos(zalpha0 - zalpha1 * zan) |
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| 62 | zint = zint + BB*sin(zalpha0-zbeta0+(zbeta1-zalpha1)*zan) |
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| 63 | zint = zint + CC*sin(zalpha0+zbeta0-(zalpha1+zbeta1)*zan) |
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| 64 | pdecli = -asin (zint) |
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| 65 | |
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| 66 | RETURN |
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| 67 | END |
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