HIP 21990
HIP 21990 is a M-type (Red) star.
At a distance of roughly 2,718 light-years, HIP 21990 is a distant star lying deep within the Milky Way galaxy.
HIP 21990 is classified as a spectral class M star (M-type (Red)) on the Harvard spectral classification system.
HIP 21990 has an apparent magnitude of +8.51, 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 red hue, which corresponds to a B-V color index of +1.564.
Đặc tính vật lý
| Phân Loại Quang Phổ | Class M — M-type (Red) |
| Chỉ số màu (B−V) | 1,564 |
Quan sát
| Cấp Sao Biểu Kiến | +8.51 |
| Cấp Sao Tuyệt Đối | -1,09 |
| Khoảng Cách | 2,718 ly |
Vị trí
| Xích kinh | 4h 43,60m |
| Xích vĩ | -56° 22,40′ |
Câu hỏi thường gặp
What type of star is HIP 21990?
HIP 21990 is a Class M — M-type (Red) star.
How far is HIP 21990 from Earth?
HIP 21990 is approximately 2,718.0 light-years from Earth.
Can you see HIP 21990 with the naked eye?
With an apparent magnitude of 8.51, HIP 21990 is not visible to the naked eye.