Yildun
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23Del UMi
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Yildun is a A-type (White) star. It carries the designation 23Del UMi.
Located approximately 172.1 light-years from Earth, Yildun resides within the broader disk of our Milky Way galaxy.
Yildun is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
With an apparent magnitude of +4.35, Yildun 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 blue-white hue, which corresponds to a B-V color index of +0.021.
물리적 특성
| 분광형 | A Class A — A-type (White) |
| 색지수 (B−V) | 0.021 |
관측
| 겉보기 등급 | +4.35 |
| 절대 등급 | 0.74 |
| 거리 | 172 ly |
위치
| 적경 | 17h 32.22m |
| 적위 | 86° 35.19′ |