アルニタク
50Zet Ori
アルニタク is a O-type (Blue) star located in the constellation Orion. It carries the designation 50Zet Ori.
Located approximately 736.2 light-years from Earth, アルニタク resides within the broader disk of our Milky Way galaxy.
アルニタク is classified as a spectral class O star (O-type (Blue)) on the Harvard spectral classification system.
アルニタク has an apparent magnitude of +1.74, making it a bright and prominent star that is readily visible to the naked eye. It is one of the more conspicuous stars in its region of the sky. Observers will note its blue hue, which corresponds to a B-V color index of -0.199.
物理的特性
| スペクトル型 | Class O — O-type (Blue) |
| 色指数 (B−V) | -0.199 |
観測
| 見かけの等級 | +1.74 |
| 絶対等級 | -5.03 |
| 距離 | 736 ly |
| 星座 | Orion |
位置
| 赤経 | 5h 40.76m |
| 赤緯 | -1° 56.55′ |
よくある質問
What type of star is アルニタク?
アルニタク is a Class O — O-type (Blue) star.
How far is アルニタク from Earth?
アルニタク is approximately 736.2 light-years from Earth.
Can you see アルニタク with the naked eye?
With an apparent magnitude of 1.74, アルニタク is visible to the naked eye.
What constellation is アルニタク in?
アルニタク is located in the constellation Orion.