HIP 21688
HIP 21688 is a M-type (Red) star.
At a distance of roughly 2,313 light-years, HIP 21688 is a distant star lying deep within the Milky Way galaxy.
HIP 21688 is classified as a spectral class M star (M-type (Red)) on the Harvard spectral classification system.
HIP 21688 has an apparent magnitude of +8.23, 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 +1.476.
物理特性
| 光谱类型 | Class M — M-type (Red) |
| 色指数 (B−V) | 1.476 |
观测
| 视星等 | +8.23 |
| 绝对星等 | -1.02 |
| 距离 | 2,313 ly |
位置
| 赤经 | 4h 39.38m |
| 赤纬 | -30° 27.40′ |
常见问题
What type of star is HIP 21688?
HIP 21688 is a Class M — M-type (Red) star.
How far is HIP 21688 from Earth?
HIP 21688 is approximately 2,313.2 light-years from Earth.
Can you see HIP 21688 with the naked eye?
With an apparent magnitude of 8.23, HIP 21688 is not visible to the naked eye.