Star
Alderamin
α Cephei · HIP 105199 · White subgiant
True colour from its B–V index (0.26) — a surface around 7,700 K.
Distance
49.0 light-years
Spectral type
A7IV-V
Brightness
mag 2.45
Absolute mag
1.56
Luminosity
21 × Sun
Surface
~7,700 K
Right ascension
21h 18m 35s
Declination
+62° 35′
- Alderamin is a white subgiant in Cepheus.
In your sky
Share your location to see where this is in your sky right now.
More stars in Cepheus
Distances and spectral types: HYG Database (Hipparcos parallaxes), CC BY-SA 4.0.