2 Per
2 Per
2 Per is a B-type (Blue-White) star located in the constellation Perseus. It carries the designation 2 Per.
Located approximately 482.5 light-years from Earth, 2 Per resides within the broader disk of our Milky Way galaxy.
2 Per is classified as a spectral class B star (B-type (Blue-White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.70, 2 Per 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 hue, which corresponds to a B-V color index of -0.067.
物理的特性
| スペクトル型 | Class B — B-type (Blue-White) |
| 色指数 (B−V) | -0.067 |
観測
| 見かけの等級 | +5.70 |
| 絶対等級 | -0.15 |
| 距離 | 482 ly |
| 星座 | Perseus |
位置
| 赤経 | 1h 52.16m |
| 赤緯 | 50° 47.57′ |
よくある質問
What type of star is 2 Per?
2 Per is a Class B — B-type (Blue-White) star.
How far is 2 Per from Earth?
2 Per is approximately 482.5 light-years from Earth.
Can you see 2 Per with the naked eye?
With an apparent magnitude of 5.70, 2 Per is visible to the naked eye.
What constellation is 2 Per in?
2 Per is located in the constellation Perseus.