Castor vs Pollux
| Eigenschaft | Castor | Pollux |
|---|---|---|
| Bezeichnung | 66Alp Gem | 78Bet Gem |
| Sternbild | Gemini | Gemini |
| Spektralklasse | Class A — A-type (White) | Class K — K-type (Orange) |
| Scheinbare Helligkeit | +1.58 | +1.16 |
| Absolute Helligkeit | 0,62 | 1,08 |
| Entfernung | 50.9 ly | 33.8 ly |
| Masse | N/A | N/A |
| Radius | N/A | N/A |
| Temperatur | N/A | N/A |
| Leuchtkraft | N/A | N/A |
Wesentliche Unterschiede
- ◆ 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.