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Y-Type Star

(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. Characteristics:

Dark brownconventional color
under 700KSurface Temperature

(star type,spectral type)
http://en.wikipedia.org/wiki/Stellar_classification
http://en.wikipedia.org/wiki/Brown_dwarf

Referenced by:
Brown Dwarf (BD)
Spectral Class
Ultracool Dwarf

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