HIP 21709
HIP 21709 is a M-type (Red) star.
HIP 21709 is an extraordinarily remote star, situated approximately 326,156 light-years from Earth.
HIP 21709 is classified as a spectral class M star (M-type (Red)) on the Harvard spectral classification system.
HIP 21709 has an apparent magnitude of +9.72, 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 +1.575.
物理的特性
| スペクトル型 | Class M — M-type (Red) |
| 色指数 (B−V) | 1.575 |
観測
| 見かけの等級 | +9.72 |
| 絶対等級 | -10.28 |
| 距離 | 326,156 ly |
位置
| 赤経 | 4h 39.70m |
| 赤緯 | -11° 26.77′ |
よくある質問
What type of star is HIP 21709?
HIP 21709 is a Class M — M-type (Red) star.
How far is HIP 21709 from Earth?
HIP 21709 is approximately 326,156.0 light-years from Earth.
Can you see HIP 21709 with the naked eye?
With an apparent magnitude of 9.72, HIP 21709 is not visible to the naked eye.