21Eta UMi
21Eta UMi
21Eta UMi is a F-type (Yellow-White) star. It carries the designation 21Eta UMi.
Located approximately 97.0 light-years from Earth, 21Eta UMi resides within the broader disk of our Milky Way galaxy.
21Eta UMi is classified as a spectral class F star (F-type (Yellow-White)) on the Harvard spectral classification system.
With an apparent magnitude of +4.95, 21Eta UMi 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 white hue, which corresponds to a B-V color index of +0.393.
物理的特性
| スペクトル型 | F Class F — F-type (Yellow-White) |
| 色指数 (B−V) | 0.393 |
観測
| 見かけの等級 | +4.95 |
| 絶対等級 | 2.58 |
| 距離 | 97.0 ly |
位置
| 赤経 | 16h 17.51m |
| 赤緯 | 75° 45.32′ |
Frequently Asked Questions
What type of star is 21Eta UMi?
21Eta UMi is a Class F — F-type (Yellow-White) star.
How far is 21Eta UMi from Earth?
21Eta UMi is approximately 97.0 light-years from Earth.
Can you see 21Eta UMi with the naked eye?
With an apparent magnitude of 4.95, 21Eta UMi is visible to the naked eye.