ベラトリックス vs リゲル
| 特性 | ベラトリックス | リゲル |
|---|---|---|
| 名称 | 24Gam Ori | 19Bet Ori |
| 星座 | Orion | Orion |
| スペクトル型 | Class B — B-type (Blue-White) | Class B — B-type (Blue-White) |
| 見かけの等級 | +1.64 | +0.18 |
| 絶対等級 | -2.80 | -6.93 |
| 距離 | 252 ly | 863 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 hot B-type stars in Orion, marking opposite corners of the hunter's torso.
- ◆ Rigel (Beta Orionis) is a blue supergiant at ~21 M☉; Bellatrix (Gamma Orionis) is a blue giant at ~8.4 M☉.
- ◆ Rigel is far more luminous at ~120,000 L☉ versus Bellatrix at ~6,400 L☉.
- ◆ Bellatrix is much closer at ~250 light-years; Rigel is also ~860 light-years distant.
- ◆ Bellatrix will eventually become an orange giant and finally a massive white dwarf, not a supernova.