21 Vir
21 Vir
21 Vir is a A-type (White) star located in the constellation Virgo. It carries the designation 21 Vir.
Located approximately 258.4 light-years from Earth, 21 Vir resides within the broader disk of our Milky Way galaxy.
21 Vir is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.48, 21 Vir 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 hue, which corresponds to a B-V color index of -0.035.
Đặc tính vật lý
| Phân Loại Quang Phổ | Class A — A-type (White) |
| Chỉ số màu (B−V) | -0,035 |
Quan sát
| Cấp Sao Biểu Kiến | +5.48 |
| Cấp Sao Tuyệt Đối | 0,98 |
| Khoảng Cách | 258 ly |
| Chòm Sao | Virgo |
Vị trí
| Xích kinh | 12h 33,78m |
| Xích vĩ | -9° 27,12′ |
Câu hỏi thường gặp
What type of star is 21 Vir?
21 Vir is a Class A — A-type (White) star.
How far is 21 Vir from Earth?
21 Vir is approximately 258.4 light-years from Earth.
Can you see 21 Vir with the naked eye?
With an apparent magnitude of 5.48, 21 Vir is visible to the naked eye.
What constellation is 21 Vir in?
21 Vir is located in the constellation Virgo.