étoile de Barnard vs Proxima Centauri
| 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
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Both are nearby red dwarf stars invisible to the naked eye.
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Barnard's Star has the highest proper motion of any known star (10.3 arcseconds per year).
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Proxima Centauri is closer at 4.24 light-years; Barnard's Star is 5.96 light-years away.
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Proxima Centauri has confirmed exoplanets in the habitable zone; Barnard's Star has only a sub-Earth candidate.
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Barnard's Star will make its closest approach to the Sun in about 10,000 years.