The S-type (or S-class) is a type of star.

When the USS Enterprise arrived in the vicinity of Sigma-285 Trianguli in the 2270s, unnamed stars of this type were noted by sensors. A sputtering S-type, borderline carbon star, had water vapor in its atmosphere, to which Uhura joked to Spock meant the star was "running out of steam". (TOS novel: My Enemy, My Ally)


Stellar classification
By class and type class O blue-violet starclass B blue starclass A blue-white starclass F white star (white dwarf) • class G yellow star (yellow dwarfyellow giant) • class K orange star (orange giant) • class M red star (red dwarfred giant) • green starbrown dwarfN-type starR-type starS-type starD-type star
By size or makeup black hole/black starcarbon starcollapsardwarf star (brown dwarfred dwarfwhite dwarfyellow dwarf) • giant star (blue giantred giantorange giantyellow giant) • Lazarus starmicrostarneutron star (magnetarpulsar) • protostarsupergiant starvariable starwhite holeWolf-Rayet star
Community content is available under CC-BY-SA unless otherwise noted.