Tranome Sar was a class K orange star in Romulan Star Empire space in the Beta Quadrant, near the border of the Klingon Empire. (ST reference: Star Charts)

The Tranome Sar system could be visually seen from Space Station KR-3. In 2311, Elias Vaughn stood in front of a viewport on the space station and tested his memory, naming all the major stars he could see in Romulan space. (TLE novel: Serpents Among the Ruins)

Klingon Commander M'Raq, the son of K'Ton, first officer of the IKS K'mqar, was captured in battle at Tranome Sar in 2360. (TNG episode: "A Matter of Honor")

The sources listed here do not specify if the star had any planets.