Multiple realities(covers information from several alternate timelines)
Ceti Alpha was the primary of the Ceti Alpha system.
In the year 2165 of an alternate timeline where the Xindi destroyed Earth, Yerdrin Lek hid his ship just outside the chromosphere of Ceti Alpha, after he tailed Doctor Phlox to the system. Nevertheless, he was discovered when Enterprise picked up an intermittent duranium signature. (ENT: "Twilight")
Ceti Alpha was a K class star. It had a magnitude of +5, which was the same brightness as Sol. This star was located in the Beta Quadrant. (Star Trek: Star Charts, United Federation of Planets II)