Alderamin
5Alp Cep
Alderamin is a A-type (White) star. It carries the designation 5Alp Cep.
Alderamin lies approximately 49.0 light-years from Earth, placing it within the Sun's local stellar neighborhood. This relatively short cosmic distance means the light reaching us today departed the star only about 49 years ago.
Alderamin is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
At an apparent magnitude of +2.45, Alderamin is visible to the naked eye under reasonably clear skies. It may require dark-sky conditions to be seen comfortably in areas with significant light pollution. Observers will note its blue-white hue, which corresponds to a B-V color index of +0.257.
Physical Properties
| Spectral Class | Class A — A-type (White) |
| Color Index (B−V) | 0.257 |
Observation
| Apparent Magnitude | +2.45 |
| Absolute Magnitude | 1.56 |
| Distance | 49.0 ly |
Position
| Right Ascension | 21h 18.58m |
| Declination | 62° 35.13′ |
Frequently Asked Questions
What type of star is Alderamin?
Alderamin is a Class A — A-type (White) star.
How far is Alderamin from Earth?
Alderamin is approximately 49.0 light-years from Earth.
Can you see Alderamin with the naked eye?
With an apparent magnitude of 2.45, Alderamin is visible to the naked eye.