Sosaria orbits a star, Lumina, rather similar to our own — a main sequence G. It’s slightly dimmer, but somewhat closer, making temperatures very similar.
Sosaria has two moons, Trammel and Felucca. Trammel is smaller and slightly greyish, while Felucca is somewhat larger of the two and casts a more reddish glow. The two stars orbit in tight synchronization — Trammel completing a full lunar cycle in 14 days, and Felucca in 28.
There are four known brightest stars among the heavens — Nyssa, Titania, Syrinx and Selene. It’s considered auspicious to be born under the morning star of these radiant jewels, and an omen to be born under the evening star of Nyssa or Syrinx.