Castor is a variable star and also a quadruple star system, and has a spectral class of A1/A2 giving it a colour of white to white blue.
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Castor is a binary star system located in the constellation Gemini. The primary star, Castor A, is white in color with a surface temperature of around 9,221 degrees Celsius. The secondary star, Castor B, is cooler with a reddish hue and a surface temperature of approximately 5,828 degrees Celsius.
Castor's color is kinda brown
Castor is the second brightest star in the constellation Gemini.
Castor is a star system composed of six stars, most spectroscopic binaries.
Castor is still on the main sequence and thus is converting hydrogen to helium.
Castor
Castor is one of the twin sons of Zeus and Leda along with Pollux the twins of the constellation Gemini.
"Castor" is the name that people have given to one of the first magnitude stars visible from the northern Hemisphere, in the constellation of Gemini.
Castor is a multiple star system located in the constellation of Gemini. It consists of six stars, with the two brightest being white A-type main sequence stars. These stars are relatively young and hot, and are about 51 light-years away from Earth.
Castor is the alpha star and is made up of two blue-white spectroscopic double-stars and a red dwarf double, so Castor is actually a total of six stars, two of which can be seen by small telescopes.
Castor is the second brightest star in the constellation Gemini and one of the brightest stars in the nighttime sky.It is a variable star and has an apparent magnitude of 1.96 / 2.91 and an absolute magnitude of 1.33 /2.28.See related links and questions for more information.
The beta star of Gemini is Pollux. The two bright stars of Gemini are Castor and Pollux. Although Pollux is the brightest star in Gemini, Castor was named alpha-Gemini (despite being second brightest), therefore, Pollux is beta-Gemini. Pollux is the one more southerly and easterly.