Mizar and Alcor

Mizar and Alcor in constellation Ursa Major
Observation data
Epoch J2000      Equinox J2000
Constellation Ursa Major
Right ascension 13h 23m 55.5s
Declination +54° 55′ 31″
Apparent magnitude (V) 2.23
Characteristics
Spectral type A2 V/A2 V/A1 V
U−B color index 0.09
B−V color index 0.13
Astrometry
Radial velocity (Rv) −9 km/s
Proper motion (μ) RA: 121.23 mas/yr
Dec.: −22.01 mas/yr
Parallax (π) 39.4 ± 0.3 mas
Distance 82.8 ± 0.6 ly
(25.4 ± 0.2 pc)
Absolute magnitude (MV) 0.33
Other designations
Mizat, Mirza, Mitsar, Vasistha, 79 Ursae Majoris, HR 5054, BD +55 1598A, HD 116656, SAO 28737, FK5 497, HIP 65378.

Get more info about Mizar in Wikipedia

This article uses material from the Wikipedia article
Mizar, which is released under the Creative Commons Attribution-Share-Alike License 3.0