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Bookmark or Share- Sidereal Definition & Meaning - Merriam-WebsterThe meaning of SIDEREAL is of, relating to, or expressed in relation to stars or constellations : astral.
- Sidereal Astrology: What It Is And Everything To KnowEnter, sidereal astrology—the ancient form of reading the constellations that predates even tropical astrology and, therefore, rewrites everything you think you know about the stars. What is...
- Sidereal time: What is it? - EarthSkySidereal time measures the rotation of our planet relative to the stars. It allows astronomers to keep time without worrying about the motion of Earth around the sun.
- Solar Time vs. Sidereal Time - Las Cumbres ObservatorySidereal time. Sidereal time is based on when the vernal equinox passes the upper meridian. This takes approximately 4 minutes less than a solar day. 1 sidereal day = 23 hours, 56 minutes, 4.1 seconds.
- Sidereal vs. Synodic - Motions of the Sun - NAAPA sidereal year is the time it takes for the sun to return to the same position with respect to the stars. Due to the precession of the equinoxes the sidereal year is about 20 minutes longer than the tropical year.
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