SkyRef / Stars

Regulus

Magnitude 1.35, blue-white. A first-magnitude star, among the brightest few dozen visible.

The numbers

Magnitude1.35
Colourblue-white
Right ascension10.140h
Declination+11.97°
B−V index-0.11
CatalogueHR 3982

What you are looking at

Regulus shines at magnitude 1.35, making it a first-magnitude star, among the brightest few dozen visible. Its B−V colour index of -0.11 makes it blue-white to the eye, corresponding to a surface temperature of over 10,000 K.

It sits at right ascension 10.14 hours and declination +12.0°. It straddles the celestial equator, so it is visible from essentially anywhere on Earth at the right time of year.

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Other named stars

SiriusCanopusArcturusRigil KentaurusVegaCapellaRigelProcyonAchernarBetelgeuseHadarAltairAldebaranAntaresSpicaPolluxFomalhautMimosaDenebAcruxRegulusAdharaElnathAlphardAlnilamDenebolaCastorAlgolDubheKaus AustralisAlkaidPolarisAlnitakCaphMirachBellatrix