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Asteroid Number	90
Asteroid Group	Main Asteroid Belt
Orbital Period	5 years, 215 days
Distance from the Sun	Semi-Major Axis: 471,042,645 km (3.15 AU) Perihelion: 392,614,273 km (2.62 AU) Aphelion: 549,471,016 km (3.67 AU)
Eccentricity	0.1665
Diameter (Mean)	88 and 84 kilometres (respective values for the two component objects)
Notes	Part of the extensive Themis family that swarms around the outer Asteroid Belt, Antiope is notable as being a binary or double asteroid. It consists of two gravitationally bound objects of similar size and mass orbiting around a common centre of gravity, at a distance of less than two hundred kilometres from one another.

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