Polaris Australis
Sig Oct
Polaris Australis is a F-type (Yellow-White) star. It carries the designation Sig Oct.
Located approximately 280.9 light-years from Earth, Polaris Australis resides within the broader disk of our Milky Way galaxy.
Polaris Australis is classified as a spectral class F star (F-type (Yellow-White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.45, Polaris Australis 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-white hue, which corresponds to a B-V color index of +0.283.
物理特性
| 光谱类型 | F Class F — F-type (Yellow-White) |
| 色指数 (B−V) | 0.283 |
观测
| 视星等 | +5.45 |
| 绝对星等 | 0.77 |
| 距离 | 281 ly |
位置
| 赤经 | 21h 8.77m |
| 赤纬 | -88° 57.39′ |
Frequently Asked Questions
What type of star is Polaris Australis?
Polaris Australis is a Class F — F-type (Yellow-White) star.
How far is Polaris Australis from Earth?
Polaris Australis is approximately 280.9 light-years from Earth.
Can you see Polaris Australis with the naked eye?
With an apparent magnitude of 5.45, Polaris Australis is visible to the naked eye.