Constellation Ursa Minor | ||
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The Bayer designation Pi Ursae Minoris (π UMi, π Ursae Minoris) is shared by two star systems, π¹ Ursae Minoris and π² Ursae Minoris, in the constellation Ursa Minor. They are separated by 0.64° on the sky.
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π¹ Ursae Minoris
Pi-1 Ursae Minoris is a triple star system approximately 70.8 light years from Earth. The system is dominated by a binary pair of two yellow G-type subgiants which are 32 arcseconds apart and have apparent magnitudes of +6.9 and +7.8. They also have an 11th magnitude companion, Pi-1 Ursae Minoris C, which is 135 arcseconds away.
π² Ursae Minoris
Pi-2 Ursae Minoris is a binary star approximately 384 light years from Earth. The primary component, Pi-2 Ursae Minoris A, is a yellow-white F-type star with an apparent magnitude of +6.89. The companion star, Pi-2 Ursae Minoris B, has an apparent magnitude of +8.3 and is 0.67 arcseconds from the primary. The binary star completes one orbit every 188 years.