A new nearby brown dwarf

[granthutchison]

Discovery of a very cool brown dwarf amongst the ten nearest stars to the Solar System.
I've added a very approximate definition to nearstars.stc. Celestia doesn't recognize spectral class T10, with a temperature of 400-500K.

Grant

[ajtribick]

Wonder if we're going to have to implement spectral class Y sometime soon. In any case, even with the late T-dwarfs, presumably they wouldn't be noticeably self-luminous anyway...

Incidentally the brown dwarfs are probably a good example of why it would be useful to be able to specify temperature in the stc file: the spectral types seem to have a strong dependence on gravity which means the mapping of spectral type to temperature breaks down.

[InconspicuousBarrel]

I've always wanted a spectral class Y and have also thought declaring temperature on stars (as well as planets) would be a useful feature.

[ajtribick]

Turns out it is further away than initially thought, arXiv paper has been revised.