23 Ursae Majoris
23 Ursae Majoris, or
23 UMa, is a
triple star in the
constellation Ursa Major. Its main components, 23 UMa A and 23 UMa B, are approximately 75.5
light years from
Earth.
The primary component,
23 Ursae Majoris A, is a yellow-white
F-type subgiant with an
apparent magnitude of +3.65. At a separation of 22.7
arcseconds is the 9th magnitude
23 Ursae Majoris B. A and B form a physical
binary. The third, optical, component,
23 Ursae Majoris C, is a magnitude +10.5 star 99.6 arcseconds away.
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23 Ursae Majoris at Jim Kaler's STARS
