アルデバラン vs アンタレス
| 特性 | アルデバラン | アンタレス |
|---|---|---|
| 名称 | 87Alp Tau | 21Alp Sco |
| 星座 | Taurus | Scorpius |
| スペクトル型 | Class K — K-type (Orange) | Class M — M-type (Red) |
| 見かけの等級 | +0.87 | +1.06 |
| 絶対等級 | -0.68 | -5.09 |
| 距離 | 66.6 ly | 554 ly |
| 質量 | N/A | N/A |
| 半径 | N/A | N/A |
| 温度 | N/A | N/A |
| 光度 | N/A | N/A |
主な違い
- ◆ Both are prominent red giant/supergiant stars that appear orange-red in the sky and are often compared.
- ◆ Antares is a true red supergiant at ~680 R☉; Aldebaran is a more modest orange giant at ~44 R☉.
- ◆ Antares is about 604 light-years away; Aldebaran is much closer at ~65 light-years.
- ◆ Antares is a supernova candidate; Aldebaran is not massive enough to end as a supernova.
- ◆ Aldebaran appears to be in the Hyades cluster but is actually an unrelated foreground star.