HIP 21709
HIP 21709 is a M-type (Red) star.
HIP 21709 is an extraordinarily remote star, situated approximately 326,156 light-years from Earth.
HIP 21709 is classified as a spectral class M star (M-type (Red)) on the Harvard spectral classification system.
HIP 21709 has an apparent magnitude of +9.72, 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 +1.575.
คุณสมบัติทางกายภาพ
| ประเภทสเปกตรัม | Class M — M-type (Red) |
| ดัชนีสี (B−V) | 1.575 |
การสังเกต
| โชติมาตรปรากฏ | +9.72 |
| โชติมาตรสัมบูรณ์ | -10.28 |
| ระยะทาง | 326,156 ly |
ตำแหน่ง
| ไรต์แอสเซนชัน | 4h 39.70m |
| เดคลิเนชัน | -11° 26.77′ |
คำถามที่พบบ่อย
What type of star is HIP 21709?
HIP 21709 is a Class M — M-type (Red) star.
How far is HIP 21709 from Earth?
HIP 21709 is approximately 326,156.0 light-years from Earth.
Can you see HIP 21709 with the naked eye?
With an apparent magnitude of 9.72, HIP 21709 is not visible to the naked eye.