Size comparison: Pollux vs Sun

Size comparison between the two stars, the Sun and Pollux.

Pollux is the brightest star in the constellation Gemini. This orange giant is the closest giant star to the sun. Stars that are closer are indeed dwarf stars. Pollux has already consumed its hydrogen in its nucleus, it is in the main sequence. It has a planet called Pollux b, also Thestias. This extrasolar planet has a mass 2.3 times greater than that of Jupiter. It takes 590 days to obiter around Pollux.

Object	Pollux	Sun
Type	Star, orange giant	Star, yellow dwarf
Age	724 million years	4.6 billion years
Diameter	12,611,000 km	1,392,684 km
Mean radius	6,305,000 km	696,342 km
Mass	3.78 × 1030 kg	1.98 × 1030 kg
Rotation duration	558 days	24 days
Surface gravity	4.79 m/s²	274.4 m/s²
Circumference	39.6 million km	4.3 million km
Surface area	4.99 × 1014 km2	6.09 × 1012 km2
Volume	1.04 × 1021 km3	1.41 × 1018 km3
Number of planets	1	8
Sun distance	33.78 light years	0 km
Luminosity	1.24 × 1028 W	3.82 × 1026 W
Photosphere temperature	4,586 K	5,772 K
Distance from the Milky Way center	-	27,200 light years
Spectral classification	K0 III	G2V
Absolute magnitude	1.08	4.83
Right ascension	07h 45m 18,94987s	19h 4m 30s
Declination	+28° 01′ 34,3160″	+63.87°

Note: if one of the objects is not visible, it just means that it is too tiny to be displayed compared to the other one.