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55 Ursae Majoris

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55 Ursae Majoris

55 Ursae Majoris (55 UMa) is a triple star system in the constellation Ursa Major. Its apparent magnitude is 4.80. Two stars form a close spectroscopic binary with an orbital period of 2.55 days. The third star orbits the central pair every 1873 days. All three stars are A-type main-sequence stars.

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