40 Tau
40 Tau
40 Tau is a B-type (Blue-White) star located in the constellation Taurus. It carries the designation 40 Tau.
Located approximately 640.8 light-years from Earth, 40 Tau resides within the broader disk of our Milky Way galaxy.
40 Tau is classified as a spectral class B star (B-type (Blue-White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.32, 40 Tau 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 hue, which corresponds to a B-V color index of -0.080.
物理的特性
| スペクトル型 | Class B — B-type (Blue-White) |
| 色指数 (B−V) | -0.080 |
観測
| 見かけの等級 | +5.32 |
| 絶対等級 | -1.15 |
| 距離 | 641 ly |
| 星座 | Taurus |
位置
| 赤経 | 4h 3.74m |
| 赤緯 | 5° 26.14′ |
よくある質問
What type of star is 40 Tau?
40 Tau is a Class B — B-type (Blue-White) star.
How far is 40 Tau from Earth?
40 Tau is approximately 640.8 light-years from Earth.
Can you see 40 Tau with the naked eye?
With an apparent magnitude of 5.32, 40 Tau is visible to the naked eye.
What constellation is 40 Tau in?
40 Tau is located in the constellation Taurus.