Pi Ursae Majoris
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For other stars named Muscida, see Muscida
The Bayer designation Pi Ursae Majoris (π UMa / π Ursae Majoris) is shared by two stars in the constellation Ursa Major:
- π1 Ursae Majoris (3 Ursae Majoris)
- π2 Ursae Majoris (4 Ursae Majoris)
They are separated by 0.70° on the sky. They are sometimes given the name Muscida, which can also refer to ο Ursae Majoris.
The two stars, Pi1 and Pi2 together, are considered an optical double star. They are not a binary star, in that they are not gravitationally linked, but they are close to each other as seen in the sky, and so are optically associated.