2.51
Apparent Mag49
Distance (ly)A8V
Spectral Type7,740
Temperature (K)Alpha Cephei, also known as Alderamin, will become the north pole star around 7500 CE.
Stellar Data
Apparent Magnitude2.51
Absolute Magnitude1.58
Distance49 light-years
Spectral TypeA8V
Temperature7,740 K
Luminosity18 L☉
Radius2.3 R☉
Mass1.74 M☉
Right Ascension21h 18m 34.8s
Declination+62° 35′ 08.1″
ConstellationCepheus
Notable Facts
- Alderamin will be the north pole star around 7500 CE
- It rotates rapidly at about 246 km/s
- The name means the right forearm