PDF Slides - UMBC
PDF Slides - UMBC
PDF Slides - UMBC
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Sidereal Time is based upon the rotation of the Earth<br />
1 sidereal day is defined to be the time taken for a non-solar system<br />
object to return to exactly the same azimuth<br />
(in the horizontal Coord system)<br />
… hence LST discussed previously..<br />
Solar Time is based upon the rotation of the Earth<br />
and its orbit around the Sun<br />
1 solar (or synodic) day is defined to be the time taken for the<br />
Sun to return to exactly the same az (in horizontal Coord sys)<br />
A Solar Day is 24 hrs (on average!)<br />
A Sidereal Day is 23 hrs 56 mins 4.09 seconds (on average!)<br />
Ian M. George PHYS 304 (2011 Fall) Meeting 04
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