Regulus, also known as Alpha Leonis, is the brightest star in the constellation Leo and the 21st brightest star in the night sky. It has an apparent magnitude of 1.35 and lies at a distance of 79.3 light years, or 24.3 parsecs, from Earth. Alpha Leonis is not really a single star, but a multiple star system.
The name Regulus means the “little king“ or “prince“ in Latin and the star is also known as Basiliskos, Cor Leonis (Lion’s Heart), Qalb al-Asad and Rex.
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