étoile de Barnard vs Proxima Centauri
| Propriété |
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
|
Différences Clés
- ◆ 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.