ASTR-122 Lecture Notes - Lecture 6: The Technique, Spectroscopy, Steady State Theory
8 Apr 2016
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Document Summary
The orbit of a satellite where the satellite travels in a direction opposite to that direction of the planet"s rotation. The amount of time that passes between the rising of aries and another celestial object. Right ascension is one unit of measure for locating an object in the sky. Ring galaxies are believed to have been formed by collisions with other galaxies. The smallest distance from a planet or other body at which purely gravitational forces can hold together a satellite or secondary body of the same mean density as the primary. At a lesser distance the tidal forces of the primary would break up the secondary. The spin of a body about its axis. Also known as a saros cycle, a period of 223 synodic months that can be used to predict solar and lunar eclipses. The saros cycle is equal to 6,585. 3 days (18 years 11 days 8 hours).
