Capella vs Pólux

Property Capella Pólux
Designação 13Alp Aur 78Bet Gem
Constelação N/A Gemini
Classe Espectral Class M — M-type (Red) Class K — K-type (Orange)
Magnitude Aparente +0.08 +1.16
Magnitude Absoluta -0.51 1.08
Distância 42.8 ly 33.8 ly
Massa N/A N/A
Raio N/A N/A
Temperatura N/A N/A
Luminosidade N/A N/A

Key Differences

  • Both are among the nearest and brightest giant stars to the Sun.
  • Capella is the sixth-brightest star and is actually a quadruple system with two G-type giants as the primary pair.
  • Pollux is the single nearest giant star, hosting a confirmed exoplanet.
  • Capella is at ~43 light-years; Pollux is closer at ~34 light-years.
  • The primary pair of Capella orbits each other every 104 days and are not resolvable by eye.

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