Pi Ursae Majoris

Pi Ursae Majoris

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.


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