2.51
Apparent Mag49
Distance (ly)A8V
Spectral Type7,740
Temperature (K)Alderamin is the brightest star in Cepheus and will become the north pole star around the year 7500 CE due to precession.
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
- Its name means the right forearm in Arabic
- It rotates rapidly at about 246 km/s