Régulus

32Alp Leo

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Regulus is a hot blue-white B-type star whose negative B–V index of −0.087 marks a high surface temperature. Catalogued as Alpha Leonis, it is the brightest star of the constellation Leo and lies almost exactly on the ecliptic, so the Moon and planets regularly pass close by. It appears at magnitude 1.36 from a distance of 79 light-years, and its absolute magnitude of −0.57 indicates an intrinsic luminosity above the Sun's. A near-equatorial declination of +11° makes Regulus visible from essentially every inhabited latitude, anchoring the sickle-shaped figure of Leo in the spring sky.

Propriétés physiques

Classe Spectrale B Class B — B-type (Blue-White)
Indice de couleur (B−V) -0,087

Observation

Magnitude Apparente +1.36
Magnitude Absolue -0,57
Distance 79.3 ly
Constellation Leo

Position

Ascension droite 10h 8,37m
Déclinaison 11° 58,03′

Frequently Asked Questions

What type of star is Régulus?
Régulus is a Class B — B-type (Blue-White) star.
How far is Régulus from Earth?
Régulus is approximately 79.3 light-years from Earth.
Can you see Régulus with the naked eye?
With an apparent magnitude of 1.36, Régulus is visible to the naked eye.
What constellation is Régulus in?
Régulus is located in the constellation Leo.