What is the efficient way to calculate the state vector of planets and moons?
The coordinate system for planets would be with center in Solar System Baricenter, for Moon- with center in Earth and in Solar System Baricenter.
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Sign up to join this communityWhat is the efficient way to calculate the state vector of planets and moons?
The coordinate system for planets would be with center in Solar System Baricenter, for Moon- with center in Earth and in Solar System Baricenter.
The use of JPL kernels (de430.bsp
) and python jplephem
package worked for me.
Compared with the JPL Horizons, results are the same.
from jplephem.spk import SPK
kernel = SPK.open('de430.bsp')
position = kernel[0,3].compute(2457061.666666667)
print(position)