4 Eri
4 Eri
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4 Eri is a A-type (White) star. It carries the designation 4 Eri.
Located approximately 155.5 light-years from Earth, 4 Eri resides within the broader disk of our Milky Way galaxy.
4 Eri is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.44, 4 Eri 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 +0.238.
物理特性
| 光谱类型 | A Class A — A-type (White) |
| 色指数 (B−V) | 0.238 |
观测
| 视星等 | +5.44 |
| 绝对星等 | 2.05 |
| 距离 | 156 ly |
位置
| 赤经 | 2h 57.40m |
| 赤纬 | -23° 51.73′ |
Frequently Asked Questions
What type of star is 4 Eri?
4 Eri is a Class A — A-type (White) star.
How far is 4 Eri from Earth?
4 Eri is approximately 155.5 light-years from Earth.
Can you see 4 Eri with the naked eye?
With an apparent magnitude of 5.44, 4 Eri is visible to the naked eye.