Special Orbits¶

Sun-Synchronous Orbit¶

The inclination required for a Sun-synchronous orbit is determined by the J2 perturbation on the RAAN precession rate:

from astrojax.constants import R_EARTH
from astrojax.orbits import sun_synchronous_inclination

inc = sun_synchronous_inclination(R_EARTH + 500e3, 0.001, use_degrees=True)
# ~97.4 degrees

Geostationary Orbit¶

from astrojax.orbits import geo_sma

a_geo = geo_sma()  # ~42164 km