40 Cyg
40 Cyg
40 Cyg is a A-type (White) star located in the constellation Cygnus. It carries the designation 40 Cyg.
Located approximately 265.6 light-years from Earth, 40 Cyg resides within the broader disk of our Milky Way galaxy.
40 Cyg is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.63, 40 Cyg sits near the limit of naked-eye visibility. It can be glimpsed without optical aid under dark skies, but binoculars will make observation much easier. Observers will note its blue-white hue, which corresponds to a B-V color index of +0.072.
物理特性
| 光谱类型 | Class A — A-type (White) |
| 色指数 (B−V) | 0.072 |
观测
| 视星等 | +5.63 |
| 绝对星等 | 1.08 |
| 距离 | 266 ly |
| 星座 | Cygnus |
位置
| 赤经 | 20h 27.57m |
| 赤纬 | 38° 26.42′ |
常见问题
What type of star is 40 Cyg?
40 Cyg is a Class A — A-type (White) star.
How far is 40 Cyg from Earth?
40 Cyg is approximately 265.6 light-years from Earth.
Can you see 40 Cyg with the naked eye?
With an apparent magnitude of 5.63, 40 Cyg is visible to the naked eye.
What constellation is 40 Cyg in?
40 Cyg is located in the constellation Cygnus.