カプタイン星
カプタイン星 is a M-type (Red) star.
At a distance of approximately 12.8 light-years, カプタイン星 is one of the Sun's closest stellar neighbors. Light that we observe from カプタイン星 today left the star roughly 12 years ago, making it a near neighbor in galactic terms.
カプタイン星 is classified as a spectral class M star (M-type (Red)) on the Harvard spectral classification system.
カプタイン星 has an apparent magnitude of +8.86, placing it beyond naked-eye visibility. A good pair of binoculars or a small telescope is required to observe this star. Observers will note its red hue, which corresponds to a B-V color index of +1.543.
物理的特性
| スペクトル型 | Class M — M-type (Red) |
| 色指数 (B−V) | 1.543 |
観測
| 見かけの等級 | +8.86 |
| 絶対等級 | 10.90 |
| 距離 | 12.8 ly |
位置
| 赤経 | 5h 11.65m |
| 赤緯 | -45° 1.11′ |
よくある質問
What type of star is カプタイン星?
カプタイン星 is a Class M — M-type (Red) star.
How far is カプタイン星 from Earth?
カプタイン星 is approximately 12.8 light-years from Earth.
Can you see カプタイン星 with the naked eye?
With an apparent magnitude of 8.86, カプタイン星 is not visible to the naked eye.