sidereal period, in astronomy, length of time a body takes to complete an orbit relative to the fixed stars. See sidereal time sidereal time (ST), time measured relative to the fixed stars; thus, the sidereal day is the period during which the earth completes one rotation on its axis so that some chosen star appears twice on the observer's celestial meridian .
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sidereal period

Time required for a celestial body in the solar system to complete one revolution with respect to the fixed stars (as observed from a fixed point outside the system). A planet's sidereal period can be calculated from its synodic period. The sidereal period of the Moon or an artificial satellite of Earth is the time it takes to return to the same position against the background of stars. See also day.

sidereal period [sī′dir·ē·əl ′pir·ē·əd]

(astronomy)

The length of time required for one revolution of a celestial body about its primary, with respect to the stars.

sidereal period (redirected from sidereal periods)

sidereal period

sidereal period
(redirected from sidereal periods)