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Leo Constellation
Constellation Leo the Lion Star Map

Leo, the Lion (Leo)


The Northern constellation of Leo, the Lion, is best viewed in Spring during the month of April. It's brightest star is Regulus at magnitude 1.35. The boundary of the Leo constellation contains 19 stars that host known exoplanets.

Wolf-359 is the 5th closest star to Earth at 7.86 light years.

      1. Pronunciation:
      2. LEE-oh
      1. Meaning:
      2. Lion
      1. Genitive:
      2. Leonis
      1. Abbreviation:
      2. Leo
      1. Asterism:
      2. Sickle
      1. Constellation Family:
      2. Zodiacal
      1. Hemisphere:
      2. Northern
      1. Quadrant:
      2. NQ2
      1. Best viewing month*:
      2. April
      1. Right Ascension (avg):
      2. 10h 0m
      1. Declination (avg):
      2. 7° 0'
      1. Brightest star:
      2. Regulus  (1.35)
      1. Stars with planets:
      2. 19

    Brightest Stars in Leo

    The 10 brightest stars in the constellation Leo by magnitude.

        1. Star
        2. Magnitude
        3. Spectral class

      Double Stars in Leo

      These are the brightest and easiest-to-find double, triple, and quadruple star systems in the constellation Leo. Also see all star clusters.

          1. Star system
          2. Magnitudes
          3. Type
          1. Alpha Leonis
          2. 1.4, 8.2
          3. double
          1. Gamma Leonis
          2. 2.4, 3.6
          3. double
          1. 54 Leonis
          2. 4.5, 6.3
          3. double

        Nebulae in Leo

        Notable and easy-to-find nebulae in the constellation Leo. Also see all nebulae.

            1. Nebula name
            2. Catalog #
            3. Nebula type

          Galaxies in Leo

          The most notable, famous, and easy-to-find galaxies in the constellation Leo. Also see all galaxies.

              1. Galaxy name
              2. Alt name
              3. Galaxy type

            Milky Way Satellites in Leo

            Dwarf satellite galaxies that orbit the Milky Way Galaxy located in the constellation Leo. Also see all Milky Way satellite galaxies.

                1. Galaxy name
                2. Alt name
                3. Magnitude
                1. Leo I
                2. 11.2
                1. Leo II
                2. 12.6
                1. Leo IV
                1. Leo T
                1. Leo V
                1. Segue 1

              Neutron Stars in Leo

              These are the most well-known neutron stars in the constellation Leo. Although neutron stars cannot be seen in any amateur telescope, they are at the center of many supernova remnant nebulae, which can be seen. Also see all neutron stars.

                  1. Neutron star
                  2. Type

                Exoplanets in Leo

                These are the most notable named exoplanet systems known in the constellation Leo. Bear in mind that we will likely discover billions of exoplanets in the years to come. Also see all exoplanets.

                    1. Host star name
                    2. Exoplanet name

                  * 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 (and not at all in the opposite).