SkyRef / Stars

Betelgeuse

Magnitude 0.50, orange-red. A first-magnitude star, among the brightest few dozen visible.

The numbers

Magnitude0.50
Colourorange-red
Right ascension5.920h
Declination+7.41°
B−V index1.85
CatalogueHR 2061

What you are looking at

Betelgeuse shines at magnitude 0.50, making it a first-magnitude star, among the brightest few dozen visible. Its B−V colour index of 1.85 makes it orange-red to the eye, corresponding to a surface temperature of under 4,000 K.

It sits at right ascension 5.92 hours and declination +7.4°. 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