The 40 Eridani system is the home of the Vulcan people, a founding species of the Federation.
Centering around an orange dwarf star, the system is dominated by the arid world of Vulcan and its massive binary planetary companion, T'Khut. Lacking a moon, Vulcan's history and biology have been shaped by the intense heat and tectonic activity of its unique orbital configuration.
An orange main-sequence dwarf of spectral type K1 V that serves as the primary anchor for the system's inhabited worlds.
A hostile, venusian Class D world suffering under an atmospheric pressure of 150 atmospheres and a crushing surface gravity of 2.614 G.
A harsh, Class M arid world featuring extensive desertification and jagged mountain ranges like Mount Seleya. It lacks any natural satellites, meaning it does not experience standard lunar tides.
Vast, modular orbital shipyards utilized heavily for the construction, refitting, and maintenance of deep-space exploration vessels.
A massive binary planetary companion to Vulcan. Its surface is violently volcanic, driven by immense tidal friction generated by interactions with the primary star and Vulcan.
A dense, metal-rich asteroid moon locked in a ridiculously low, decaying orbit around T'Khut.
A desolate Class L dwarf planet that houses a Starfleet automated telemetry relay and early-warning listening post.
A highly dense white dwarf star orbiting the primary star at a staggering distance of 400 AU (roughly 2 light-days).
A very faint red dwarf and erratic flare star. It orbits the white dwarf B component with a relatively short period of 230 years.