Caere was an inhabited planet.

In 2369, Richard Galen, who was en route to Indri VIII from the USS Enterprise-D, planned to take a Vulcan ship to Deep Space 4, at which point he would transfer to an Al-Leyan transport, which would take him as far as Caere, where he could then take a shuttle to Indri VIII. (TNG: "The Chase")

This planet was only mentioned in dialogue.
"kye-AIR" was the pronunciation for this planet's name from the script pronunciation guide. [1]
In "The Chase", the location of Caere was pointed out by Richard Galen from a star chart. The location was in what is usually identified as the Beta Quadrant.

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