Bennu and Castalia

Bennu

• The exterior gravitational field of Bennu, a target of the OSIRIS-REx mission, in spheroidal/spherical harmonics
• The exterior gravitational field of Castalia in prolate spheroidal harmonics
• Both small bodies with the associated gravity signal (potential, partial and cartesian derivatives up to the second order).
• Based on constant-density assumption and the topography model, more in Sebera et al. (2016)

Reference:

• Sebera, J., Bezděk, A., Pešek, I., & Henych, T. (2016). Spheroidal models of the exterior gravitational field of Asteroids Bennu and Castalia. Icarus, 272, 70-79.