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sidereal period
sidereal period
sidereal period, in astronomy, length of time a body takes to complete an orbit relative to the fixed stars. See sidereal time.
The Columbia Electronic Encyclopedia Copyright © 2004.
Licensed from Columbia University Press
Licensed from Columbia University Press
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. Seealso day.
Learn more about sidereal period with a free trial on Britannica.com.
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
The adjective sidereal can refer to various things, including:
- Measurements of time:
- Sidereal period of an object orbiting a star
- Sidereal astrology
- Sidereus Nuncius, or Sidereal Messenger, a scientific work by Galileo Galilei
- Sidereal Exalted, from the fantasy role-playing game Exalted
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This article is licensed under the GNU Free Documentation License.
Last updated on Friday June 06, 2008 at 02:39:36 PDT (GMT -0700)
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This article is licensed under the GNU Free Documentation License.
Last updated on Friday June 06, 2008 at 02:39:36 PDT (GMT -0700)
View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation
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