Thuban
11Alp Dra
Thuban is a A-type (White) star. It carries the designation 11Alp Dra.
Located approximately 303.1 light-years from Earth, Thuban resides within the broader disk of our Milky Way galaxy.
Thuban is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
At an apparent magnitude of +3.67, Thuban 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 hue, which corresponds to a B-V color index of -0.049.
物理特性
| 光谱类型 | Class A — A-type (White) |
| 色指数 (B−V) | -0.049 |
观测
| 视星等 | +3.67 |
| 绝对星等 | -1.17 |
| 距离 | 303 ly |
位置
| 赤经 | 14h 4.39m |
| 赤纬 | 64° 22.55′ |
常见问题
What type of star is Thuban?
Thuban is a Class A — A-type (White) star.
How far is Thuban from Earth?
Thuban is approximately 303.1 light-years from Earth.
Can you see Thuban with the naked eye?
With an apparent magnitude of 3.67, Thuban is visible to the naked eye.