アンタレス vs ベテルギウス
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| Property | アンタレス | ベテルギウス |
|---|---|---|
| 名称 | 21Alp Sco | 58Alp Ori |
| 星座 | Scorpius | Orion |
| スペクトル型 | Class M — M-type (Red) | Class M — M-type (Red) |
| 見かけの等級 | +1.06 | +0.45 |
| 絶対等級 | -5.09 | -5.47 |
| 距離 | 554 ly | 498 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 |
Key Differences
- ◆ Both are famous red supergiants and iconic supernova candidates visible to the naked eye.
- ◆ Betelgeuse is significantly larger at ~887 R☉; Antares has a radius of ~680 R☉.
- ◆ Antares is in Scorpius and has long been compared to Mars due to its red colour; Betelgeuse marks Orion's shoulder.
- ◆ Antares is about 604 light-years away; Betelgeuse is approximately 700 light-years distant.
- ◆ Both show irregular variability and dramatic mass-loss through powerful stellar winds.