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abstraction > mathematical concept > number > quantity > angle > elongation > planetary elongation > greatest elongation |
greatest elongation comparison table |
Subject | has definition | has elongation | has synonym | is a kind of | is an instance of |
---|---|---|---|---|---|
planetary elongation | The angle planet-Earth-Sun. Eastern elongations appear east of the Sun in the evening; western elongations, west of the Sun in the morning. An elongation of 0° is called conjunction; one of 180° is called opposition: and one of 90° is called quadrature. | elongation | |||
planetary elongation event | A point in the orbit of a celestial body with a specific planetary elongation such as 0°, 90° or 180° | world point | planetary elongation | ||
greatest elongation | The instants when the geocentric angular distances of Mercury or Venus are at a maximum from the Sun. | varies | world point | planetary elongation event | planetary elongation |
Next planetary elongation: planetary elongation event Up: planetary elongation, planetary elongation event