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Python: Implemented HelioVector function.

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Don Cross
2019-06-26 06:05:24 -04:00
parent 03c1bf3c8b
commit d2346051e3
2 changed files with 44 additions and 0 deletions
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22
source/python/astronomy.py
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@@ -1625,6 +1625,9 @@ def _CalcVsop(model, time):
vz = 0.397776982902*ey + 0.917482137087*ez
return Vector(vx, vy, vz, time)
def _CalcEarth(time):
return _CalcVsop(_vsop[BODY_EARTH], time)
# END VSOP
#----------------------------------------------------------------------------
# BEGIN CHEBYSHEV
@@ -1804,3 +1807,22 @@ def _CalcChebyshev(model, time):
# END CHEBYSHEV
#----------------------------------------------------------------------------
def HelioVector(body, time):
if body == BODY_PLUTO:
return _CalcChebyshev(_pluto, time)
if 0 <= body <= len(_vsop):
return _CalcVsop(_vsop[body], time)
if body == BODY_SUN:
return Vector(0.0, 0.0, 0.0, time)
if body == BODY_MOON:
e = _CalcEarth(time)
m = GeoMoon(time)
return Vector(e.x+m.x, e.y+m.y, e.z+m.z, time)
raise InvalidBodyError()