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A K class (also K type or orange star) is a type of star that is made up of neutral metals. The temperature is around 3,500 through 5,000 degrees Kelvin. (ST reference: Star Charts)

Type K0 V stars are 0.4 times as bright as Sol. Their habitable zone ranges from 0.49-0.83 AU and are 3-18 billion years old. Type K5 V stars are 0.1 times as bright as Sol and have 0.6 times its mass. Their habitable zone ranges from 0.25-0.42 AU and are 4-24 billion years old. (Decipher RPG module: Worlds)



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) • boson starbrown dwarfgreen starN-type starR-type starS-type starD-type star
By size or makeup black hole/black starcarbon stardwarf star (brown dwarfred dwarfwhite dwarfyellow dwarf) • giant star (blue giantred giantorange giantyellow giant) • Lazarus starmicrostarneutron star (collapsarmagnetarpulsar) • protostarsupergiant starvariable starwhite holeWolf-Rayet star