Solmarlon/Mass Effect

Solmarlon is one of Tereshkova's two outer worlds. Significantly removed from the rest of the system, and with unstable elliptical orbits, it is thought they may have formed within 3 AU of the binary stars, and were hurtled outward due to the instability of such an orbit.

Solmarlon is a hydrogen-helium gas giant with significant quantities of sodium in the upper atmosphere, giving it a distinct grey color.