いるか座18番星
18 Del
いるか座18番星 is a G-type (Yellow) star. It carries the designation 18 Del.
Located approximately 245.6 light-years from Earth, いるか座18番星 resides within the broader disk of our Milky Way galaxy.
いるか座18番星 is classified as a spectral class G star (G-type (Yellow)) on the Harvard spectral classification system.
With an apparent magnitude of +5.51, いるか座18番星 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 yellow hue, which corresponds to a B-V color index of +0.934.
物理的特性
| スペクトル型 | Class G — G-type (Yellow) |
| 色指数 (B−V) | 0.934 |
観測
| 見かけの等級 | +5.51 |
| 絶対等級 | 1.13 |
| 距離 | 246 ly |
位置
| 赤経 | 20h 58.43m |
| 赤緯 | 10° 50.36′ |
よくある質問
What type of star is いるか座18番星?
いるか座18番星 is a Class G — G-type (Yellow) star.
How far is いるか座18番星 from Earth?
いるか座18番星 is approximately 245.6 light-years from Earth.
Can you see いるか座18番星 with the naked eye?
With an apparent magnitude of 5.51, いるか座18番星 is visible to the naked eye.