(Y, Y-Class Star, Y Dwarf)
(type of dwarf with a temperature less than 700K)
A Y-Type Star (Y-Class Star or Y Dwarf) is a star in the Y-Class, a
Spectral Class for Brown Dwarves cooler
than T-Type Stars.
Other than that, their spectra is not well-characterized.
As of 2011, six bodies are known that fit the criteria.
(star type,spectral type)
Brown Dwarf (BD)