21Mu Dra
21Mu Dra
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21Mu Dra is a F-type (Yellow-White) star. It carries the designation 21Mu Dra.
Located approximately 89.5 light-years from Earth, 21Mu Dra resides within the broader disk of our Milky Way galaxy.
21Mu Dra is classified as a spectral class F star (F-type (Yellow-White)) on the Harvard spectral classification system.
With an apparent magnitude of +4.91, 21Mu Dra 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 +0.471.
Đặc tính vật lý
| Phân Loại Quang Phổ | F Class F — F-type (Yellow-White) |
| Chỉ số màu (B−V) | 0,471 |
Quan sát
| Cấp Sao Biểu Kiến | +4.91 |
| Cấp Sao Tuyệt Đối | 2,72 |
| Khoảng Cách | 89.5 ly |
Vị trí
| Xích kinh | 17h 5,34m |
| Xích vĩ | 54° 28,20′ |