Assertion: asteroid's mass | /r/HasProperty | obtained for larger asteroids
Facets:
value: by solving for the perturbations
type: MANNER
value: besides these "guesstimates"
type: OTHER
Source sentences:
text: Besides these "guesstimates", masses can be obtained for the larger asteroids by solving for the perturbations they cause in each other's orbits,  or when the asteroid has an orbiting companion of known orbital radius.
text: Besides these "guesstimates", masses can be obtained for the larger asteroids by solving for the perturbations they cause in each other's orbits, or when the asteroid has an orbiting companion of known orbital radius.