4 Her
4 Her
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4 Her is a B-type (Blue-White) star located in the constellation Hercules. It carries the designation 4 Her.
Located approximately 536.4 light-years from Earth, 4 Her resides within the broader disk of our Milky Way galaxy.
4 Her is classified as a spectral class B star (B-type (Blue-White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.73, 4 Her 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 -0.102.
物理的特性
| スペクトル型 | B Class B — B-type (Blue-White) |
| 色指数 (B−V) | -0.102 |
観測
| 見かけの等級 | +5.73 |
| 絶対等級 | -0.35 |
| 距離 | 536 ly |
| 星座 | Hercules |
位置
| 赤経 | 15h 55.51m |
| 赤緯 | 42° 33.97′ |