Pollux (star)
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Pollux (β Gem / β Geminorum / Beta Geminorum) is the brightest star in the constellation Gemini and one of the brightest stars in the nighttime sky. Although it has the Bayer designation "beta", it is actually brighter than Alpha Geminorum (Castor).
Castor and Pollux are the two "heavenly twin" stars that give the constellation Gemini (meaning "twins" in Latin) its name.
This star is approximately 33.7 light years from Earth's Solar System.
Some facts about Pollux
- Apparent Visual Brightness (Sirius A = 1): 0.091
- Spectral type: K0 III
- Radial velocity: 3 km/s
- Proper Motion: 0.627 arcsecs/year
- Apparent Visual Magnitude: 1.16
- Absolute Visual Magnitude: 1.09
- Luminosity: 46.6 Solar Luminosities
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