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Matrix Software > Learng Astrology > Astrophysical Directions > Solar System > The Sun

Learn Astrology

Back to Solar System   |   Back to Astrophysical Direction 

The Sun

The Sun is a variable star that is unlike any we know. It revolves east to west (in the direction of the signs of the Zodiac -- counterclockwise. The equator of the Sun is another fundamental reference plane to which we could refer all planetary motion. The inclination of the solar equator to the ecl iptic is 7°15' and the longitude of the ascending node to the ecliptic of 1950 is 75°04'. Some interesting data about our Sun:

  • Period of synodic rotation 26.75 + 5.72sin in F d.

  • Period of sidereal rotation (F = 17°)= 25.38 days

  • Corresponding synodic period = 27.275 days

  • Sun's angular velocity (F = 17°)= 2.865xl0-6 rad s-1

  • Sun's radius = 864934.6 miles

  • Sun's mass = 1.989(2)x 1033g

  • Mean distance from Earth= 92.9558xl06 miles

  • Mean equatorial horizontal parallax= 8.79418

Copyright (c) 1997-99 Michael Erlewine


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