Assertion: star's orbit | /r/HasProperty | circular
Facets:
value: perfectly
type: DEGREE
Source sentences:
text: No planet's orbit is perfectly circular, and hence the distance of each varies over the course of its year.
text: Orbits may be oval paths or circular paths.
text: First, he found that the orbits of the planets in our Solar System are elliptical, not circular (or epicyclic), as had previously been believed, and that the Sun is not located at the center of the orbits, but rather at one focus.
text: And if both orbits were perfectly circular, then each solar eclipse would be the same type every month.