369 Aëria is a large asteroid residing in the asteroid belt that was discovered by the French astronomer A. Borrelly on July 4 1893 in Marseilles. Based upon the spectrum it is classified as an M-type asteroid. In 1984 the asteroid was observed from the European Southern Observatory allowing a composite light curve to be produced. This asymmetric curve showed a rotation period of 4.787 ± 0.005 hours and a low brightness variation of 0.08 ± 0.01 in magnitude.
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