21Sig Aur
21Sig Aur
21Sig Aur is a K-type (Orange) star. It carries the designation 21Sig Aur.
Located approximately 467.3 light-years from Earth, 21Sig Aur resides within the broader disk of our Milky Way galaxy.
21Sig Aur is classified as a spectral class K star (K-type (Orange)) on the Harvard spectral classification system.
With an apparent magnitude of +5.02, 21Sig Aur 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 red hue, which corresponds to a B-V color index of +1.445.
物理的特性
| スペクトル型 | K Class K — K-type (Orange) |
| 色指数 (B−V) | 1.445 |
観測
| 見かけの等級 | +5.02 |
| 絶対等級 | -0.76 |
| 距離 | 467 ly |
位置
| 赤経 | 5h 24.65m |
| 赤緯 | 37° 23.12′ |
Frequently Asked Questions
What type of star is 21Sig Aur?
21Sig Aur is a Class K — K-type (Orange) star.
How far is 21Sig Aur from Earth?
21Sig Aur is approximately 467.3 light-years from Earth.
Can you see 21Sig Aur with the naked eye?
With an apparent magnitude of 5.02, 21Sig Aur is visible to the naked eye.