Phase angle

dcterms modified equal to or less than 2020-11-17T19:26:13.256Zequal to or more than 2020-11-17T19:26:13.256Z
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definition For an object in the solar system, the angle "Sun-object-Earth" that is, the angle between the Sun and the observer as seen from the given object. It is 0° when the object is fully illuminated, 90° when the object is half-illuminated (like the Moon at first quarter and last quarter), and 180° when the object is between Earth and the Sun.
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