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| abstraction > mathematical concept > number > quantity > angle > elongation > planetary elongation > planetary elongation event > opposition |
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| opposition comparison table | |||
| Subject | is a kind of | has elongation | has definition |
|---|---|---|---|
| planetary elongation event | planetary elongation | A point in the orbit of a celestial body with a specific planetary elongation such as 0°, 90° or 180° | |
| opposition | planetary elongation event | 180° | A configuration of the Sun, Earth and a planet in which the apparent geocentric longitude of the planet differs by 180 degrees from the apparent geocentric longitude of the Sun. |
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