Sh2-232 is a faint, small, and diffused nebula ball in the constellation Auriga. It is located in the pentagon of Auriga, about 3 degrees northeast of IC405.
Sh2-232 is the largest and faintest of a group of diffuse nebulae in Auriga. It is ionized by two giant stars, the O9.5 III HD 37737 and an anonymous B0 II class star.
A unique feature of this target is the Planetary Nebula found in the middle of those three central stars (blue dot) – it’s named PK173+03.1. LDN1525 also features prominently as a black vein. SH2-235 looks like a companion ball of gases.
