Alcor
80 UMa
Alcor is a A-type (White) star located in the constellation Ursa Major. It carries the designation 80 UMa.
Located approximately 81.7 light-years from Earth, Alcor resides within the broader disk of our Milky Way galaxy.
Alcor is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
At an apparent magnitude of +3.99, Alcor 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 +0.169.
Physikalische Eigenschaften
| Spektralklasse | Class A — A-type (White) |
| Farbindex (B−V) | 0,169 |
Beobachtung
| Scheinbare Helligkeit | +3.99 |
| Absolute Helligkeit | 2,00 |
| Entfernung | 81.7 ly |
| Sternbild | Ursa Major |
Position
| Rektaszension | 13h 25,22m |
| Deklination | 54° 59,28′ |
Häufig gestellte Fragen
What type of star is Alcor?
Alcor is a Class A — A-type (White) star.
How far is Alcor from Earth?
Alcor is approximately 81.7 light-years from Earth.
Can you see Alcor with the naked eye?
With an apparent magnitude of 3.99, Alcor is visible to the naked eye.
What constellation is Alcor in?
Alcor is located in the constellation Ursa Major.