MercuryΒΆ
The parameters of the Mercurian spheroid were obtained from [Wieczorek2015]:
>>> from boule import MERCURY
>>> print(MERCURY)
Sphere(name='MERCURY', ...)
>>> # Flattening (Note Mercury is a sphere)
>>> print("{:.5f}".format(MERCURY.flattening))
0.00000
>>> # Radius
>>> print("{:.0f}".format(MERCURY.semimajor_axis))
2439372
>>> # Geocentric gravitational constant (GM)
>>> print("{:.7e}".format(MERCURY.geocentric_grav_const))
2.2031839e+13
>>> # Angular velocity
>>> print("{:.7e}".format(MERCURY.angular_velocity))
1.2400173e-06