A-class asteroid

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A rare class of asteroid that has both a moderately high albedo (0.13–0.35) and an extremely reddish spectrum at wavelengths shorter than 0.7 μm. Strong absorption in the near-infrared is interpreted as indicating the presence of the mineral olivine. Members of this class include (246) Asporina, diameter 60 km, and (446) Aeternitas, diameter 45 km.

Subjects: Astronomy and Astrophysics.

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