Mizar - ζ Ursae Majoris (zeta Ursae Majoris)
Mizar, also designated as ζ Ursae Majoris (zeta Ursae Majoris), is a variable and multiple main-sequence star in the constellation of Ursa Major.
Mizar visual magnitude is 2.27, making it the 74th brightest star in the sky. Thanks to its high brightness, Mizar is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Mizar:
Mizar - ζ Ursae Majoris (zeta Ursae Majoris) is above the horizon from Greenwich, United Kingdom .
Celestial coordinates and finder chart of Mizar
Mizar is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Mizar are provided in the following table:
The simplified sky map below shows the position of Mizar in the sky:
Visibility of Mizar from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Mizar - ζ Ursae Majoris (zeta Ursae Majoris) is circumpolar and transits at 20:08 UTC (altitude: 86.6°)
Digitized Sky Survey image of Mizar
The image below is a photograph of Mizar from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Mizar is 0.122 arcsec per year in Right Ascension and -0.02 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of Mizar from the Sun and relative movement
Mizar is distant 78.12 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.
Spectral properties of Mizar
Mizar belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star. Mizar is also a SrSi chemically peculiar star.
The red dot in the diagram below shows where Mizar is situated in the Hertzsprung–Russell diagram.
Mizar star system properties
Mizar is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Mizar double sysyem: