étoile de Kapteyn
étoile de Kapteyn is a M-type (Red) star.
At a distance of approximately 12.8 light-years, étoile de Kapteyn is one of the Sun's closest stellar neighbors. Light that we observe from étoile de Kapteyn today left the star roughly 12 years ago, making it a near neighbor in galactic terms.
étoile de Kapteyn is classified as a spectral class M star (M-type (Red)) on the Harvard spectral classification system.
étoile de Kapteyn has an apparent magnitude of +8.86, placing it beyond naked-eye visibility. A good pair of binoculars or a small telescope is required to observe this star. Observers will note its red hue, which corresponds to a B-V color index of +1.543.
Propriétés physiques
| Classe Spectrale | Class M — M-type (Red) |
| Indice de couleur (B−V) | 1,543 |
Observation
| Magnitude Apparente | +8.86 |
| Magnitude Absolue | 10,90 |
| Distance | 12.8 ly |
Position
| Ascension droite | 5h 11,65m |
| Déclinaison | -45° 1,11′ |
Questions fréquentes
What type of star is étoile de Kapteyn?
étoile de Kapteyn is a Class M — M-type (Red) star.
How far is étoile de Kapteyn from Earth?
étoile de Kapteyn is approximately 12.8 light-years from Earth.
Can you see étoile de Kapteyn with the naked eye?
With an apparent magnitude of 8.86, étoile de Kapteyn is not visible to the naked eye.