Assertion: planet | /r/CapableOf | return to same position
Facets:
Source sentences:
text: The sidereal period of a planet can be calculated if its synodic period (the time for it to return to the same position relative to the Sun and Earth) is known; the sidereal period of the Moon or an artificial satellite of Earth is the time needed for it to return to the same position against the background of stars.