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

the time required for a celestial body, such as a planet or satellite, to complete one revolution around its primary, with respect to the stars. In the case of the revolution of the moon around the earth, the sidereal period is known as the sidereal month; in the case of the revolution of the earth around the sun, the sidereal period is the sidereal year. The concept of sidereal period is also applied to the revolution of artificial satellites around the earth. As for bodies that revolve around the sun, we speak not only of the sidereal periods of planets but also of, for example, the sidereal periods of comets. The relation between a planet’s sidereal period T, its synodic period S, and the sidereal year E is given by the equation

for the superior planets and by the equation

for the inferior planets.

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Sidereal Period (redirected from sidereal periods)

sidereal period

Sidereal Period
(redirected from sidereal periods)