Neptor

Neptor was an M class red star in the Salgorax-Neptor binary star system, the twin star of Salgorax.

About once per century, the corona of one binary creates a dramatic solar flare that induces its neighbor to flare. A highly radioactive fiery arch forms between the stars, a spacial formation that can be seen from the planet Santar.

History
In 2265, the Federation starship USS Enterprise (NCC-1701) was in orbit of Santar and transporting James T. Kirk and Spock to the surface. Radiation from solar flares misdirected the beam to Muton in the adjacent star system.