Go Astr☾nomy


Ursa Major Constellation
Constellation Ursa Major

Ursa Major, the Great Bear (UMa)

The constellation of Ursa Major, the Great Bear, is best viewed in the Spring season during the month of April for mid-northern latitudes. It's brightest star is Alioth at magnitude 1.76. The boundary of the Ursa Major constellation contains 21 stars that host known exoplanets.

The naked eye can generally see up to magnitude 6 (magnitude 8 with perfect eyes under ideal super dark-sky conditions).

      1. Meaning:
      2. Great Bear
      1. Genitive:
      2. Ursae Majoris
      1. Abbreviation:
      2. UMa
      1. Constellation Family:
      2. Ursa Major
      1. Best Viewing Month*:
      2. April
      1. Circumpolar** (N=northern, S=southern):
      2. N
      1. Right Ascension (avg):
      2. 10h 16m
      1. Declination (avg):
      2. 57° 29'
      1. Brightest Star:
      2. Alioth (1.76m)
      1. Exoplanet Host Stars:
      2. 21
      1. Quadruple Stars:
      2. 1
      1. Other:
      2. Barium star

    * For southern latitudes, flip the season listed. For example, if a constellation is listed as best viewed in the summer in the month of July, in the southern hemisphere the constellation would be best viewed in the winter in January and would be upside-down.

    ** Circumpolar constellations are visible year-round in the hemisphere listed.



    Find your inner astronomer. Your complete guide to amateur astronomy.