Time - position of the Moon with respect to the Sun as seen...

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Time Second: defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom. 1/31,557,600 Julian year (IAU system of units) Sidereal Month: the time it takes the Moon to return to a given position among the stars (Latin: sidus): 27.321661 days (27 d 7 h 43 min 11.5 s) Synodic Month: period of the Moon's revolution with respect to the sun. The synodic month is responsible for the moon phases because the Moon's appearance depends on the
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Unformatted text preview: position of the Moon with respect to the Sun as seen from the Earth Because of the perturbations of the orbits of the Earth and Moon, the actual time between orbits range from about 29.27 to about 29.83 days. The long-term average duration is 29.530589 days (29 d 12 h 44 min 2.9 s). The Earth orbits around the Sun once every year Year is 326.25 days long – every four years, leap year, adds one day The Earth’s axis is tilted by 23.5º...
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This note was uploaded on 09/11/2011 for the course AST 2002 taught by Professor Britt during the Spring '08 term at University of Central Florida.

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