étoile de Barnard vs Proxima Centauri
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| Property | étoile de Barnard | Proxima Centauri |
|---|---|---|
| Désignation | N/A | N/A |
| Constellation | N/A | Centaurus |
| Classe Spectrale | N/A | Class M — M-type (Red) |
| Magnitude Apparente | +9.54 | +11.01 |
| Magnitude Absolue | 13.24 | 15.45 |
| Distance | 6.0 ly | 4.2 ly |
| Masse | N/A | N/A |
| Rayon | N/A | N/A |
| Température | N/A | N/A |
| Luminosité | N/A | N/A |
Key Differences
- ◆ Both are nearby red dwarf stars invisible to the naked eye.
- ◆ Barnard's Star has the highest proper motion of any known star (10.3 arcseconds per year).
- ◆ Proxima Centauri is closer at 4.24 light-years; Barnard's Star is 5.96 light-years away.
- ◆ Proxima Centauri has confirmed exoplanets in the habitable zone; Barnard's Star has only a sub-Earth candidate.
- ◆ Barnard's Star will make its closest approach to the Sun in about 10,000 years.