HIP 21657
HIP 21657 is a A-type (White) star located in the constellation Perseus.
Located approximately 344.4 light-years from Earth, HIP 21657 resides within the broader disk of our Milky Way galaxy.
HIP 21657 is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
HIP 21657 has an apparent magnitude of +7.73, 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 blue-white hue, which corresponds to a B-V color index of +0.264.
物理的特性
| スペクトル型 | A Class A — A-type (White) |
| 色指数 (B−V) | 0.264 |
観測
| 見かけの等級 | +7.73 |
| 絶対等級 | 2.61 |
| 距離 | 344 ly |
| 星座 | Perseus |
位置
| 赤経 | 4h 38.98m |
| 赤緯 | 36° 32.79′ |
Frequently Asked Questions
What type of star is HIP 21657?
HIP 21657 is a Class A — A-type (White) star.
How far is HIP 21657 from Earth?
HIP 21657 is approximately 344.4 light-years from Earth.
Can you see HIP 21657 with the naked eye?
With an apparent magnitude of 7.73, HIP 21657 is not visible to the naked eye.
What constellation is HIP 21657 in?
HIP 21657 is located in the constellation Perseus.