1.93
Apparent Mag109
Distance (ly)A1IV
Spectral Type9,260
Temperature (K)Alhena is the third-brightest star in Gemini and a white subgiant marking one of Gemini's feet. It is a spectroscopic binary with a dim companion.
Stellar Data
Apparent Magnitude1.93
Absolute Magnitude-0.6
Distance109 light-years
Spectral TypeA1IV
Temperature9,260 K
Luminosity123 L☉
Radius3.3 R☉
Mass2.81 M☉
Right Ascension06h 37m 42.7s
Declination+16° 23′ 57.4″
ConstellationGemini
Notable Facts
- Alhena marks the foot of the twin Pollux in Gemini
- Its name means the brand or mark in Arabic
- It is a spectroscopic binary with an unseen companion