いるか座18番星
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18 Del
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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 | G 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′ |