Castor vs ポルックス (恒星)
| 特性 | Castor | ポルックス (恒星) |
|---|---|---|
| 名称 | 66Alp Gem | 78Bet Gem |
| 星座 | Gemini | Gemini |
| スペクトル型 | Class A — A-type (White) | Class K — K-type (Orange) |
| 見かけの等級 | +1.58 | +1.16 |
| 絶対等級 | 0.62 | 1.08 |
| 距離 | 50.9 ly | 33.8 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 the 'twin' stars in Gemini and are frequently compared as a pair.
- ◆ Despite being Alpha Geminorum, Castor is actually dimmer than Beta Geminorum (Pollux).
- ◆ Pollux is a K-type giant; Castor is an A-type main-sequence star.
- ◆ Castor is a remarkable sextuple system (6 stars in 3 binary pairs); Pollux is a single star with an exoplanet.
- ◆ Pollux's exoplanet (Thestias) made it the first giant star confirmed to host a planet.