Yridian homeworld
The Yridian homeworld was an inhabited planet. This was the homeworld for the warp-capable humanoid species, the Yridians, and the Yridian yaks. ()

The treasured Rings of Paltriss were removed from the planet many years prior to 2370. ()

Appendices

Background information 

This might be connected to Yridia, Yridia I, or Yridia Prime.

According to the reference book Star Trek: Star Charts (p. 60), Yridia Prime was located in the Yridia star system. This system's primary was a G-type star. Yridia was located in the Beta Quadrant.

Apocrypha 
According to Decipher's  sourcebook, the Yridian homeworld is called "Yrda".

External link 
 

Unnamed planets
Homeworlds