Assertion: moon | /r/HasAspect | circular orbits
Facets:
value: very
type: DEGREE
value: around earth’s center of mass
type: LOCATION
value: nearly
type: OTHER
Source sentences:
text: Both moons have very circular orbits which lie almost exactly in Mars's equatorial plane, and hence a capture origin requires a mechanism for circularizing the initially highly eccentric orbit, and adjusting its inclination into the equatorial plane, most probably by a combination of atmospheric drag and tidal forces, although it is not clear that sufficient time is available for this to occur for Deimos.
text: The moon has a nearly circular orbit around Earth’s center of mass and has what is called a bound rotation with earth.
text: Both moons have very circular orbits which lie almost exactly in Mars's equatorial plane, and hence a capture origin requires a mechanism for circularizing the initially highly eccentric orbit, and adjusting its inclination into the equatorial plane, most probably by a combination of atmospheric drag and tidal forces, although it is not clear that sufficient time is available for this to occur for Deimos.