Opposition (astronomy and astrology)
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In particular, two planets are in opposition to each other when their ecliptic longitudes differ by 180°. When talking about a single object being in opposition, it is assumed to be opposite from the sun.
The symbol of opposition is ☍.
- it is visible almost all night, rising around sunset, culminating around midnight and setting around sunrise
- its orbit brings it closest to the Earth, making it appear bigger and brighter
- light reflects more brightly from bodies with rough surfaces, at that angle
References[change | change source]
- U.S. Naval Observatory Nautical Almanac Office, P. Kenneth Seidelmann (ed) 1992. Explanatory supplement to the Astronomical Almanac. University Science Books, Mill Valley CA, 733. ISBN 0-935702-68-7