A team of international astronomers has discovered a brown dwarf star that is claimed to be the coldest star ever found.

Situated around 75 light years from Earth, the star, dubbed "CFBDSIR J1458+1013B," has a temperature of around 100 degrees Celsius, which makes it the coldest and dimmest star ever discovered. In comparison, the Sun has a temperature of around 5,500 degree Celsius.

Astronomers believe that CFBDSIR J1458+1013B, which was observed with the European Southern Observatory’s Very large Telescope, didn’t cool down after starting out with severely hot like the Sun. They are of the view that it was never very hot.

Speaking on the coldest star, Prof Duane Pontius from Alabama-based Birmingham-Southern College said, "It never became very hot in the first place because it developed from a fairly small cloud of gas.”

A brown dwarf star is the one that fails to become a full-fledge star and blurs the line between a planet and a star. Actually, a brown dwarf is too small to be placed in the stars category and too large to be called a planet.