23 Ursae Majoris

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**23 Ursae Majoris A/B**
Observation data Equinox J2000.0 (ICRS)
Constellation	Ursa Major
Right ascension	09^h 31^m 31.708^s / 28.2^s
Declination	+63° 03′ 42.70″ / 43″
Apparent magnitude (V)	+3.65 / +9.0
Absolute magnitude (V)	+1.83 / +7.18
Distance	75.5 ± 1.1 ly (23.1 ± 0.3 pc)
Spectral type	A: F0IV
Other designations
23 Uma, NN 3559, HR 3757, HD 81937, BD +63 845, FK5 355, HIP 46733, SAO 14908, GC 13109, ADS 7402, CCDM J09315+6303A/B

**23 Ursae Majoris C**
Observation data Equinox J2000.0 (ICRS)
Constellation	Ursa Major
Right ascension	09^h 31^m 18.7^s
Declination	+63° 02′ 38″
Apparent magnitude (V)	+10.5
Other designations
CCDM J09315+6303C; also, see designations for 23 Ursae Majoris A/B.

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.