Delavi was a binary star in the Alpha Quadrant, located near the border of the United Federation of Planets and the Cardassian Union. (ST reference: Star Charts)

A moon on the third planet of the Delavi system was the site of a covert Cardassian base during the Federation-Cardassian War, which was seized by the USS Gettysburg in 2328. (SCE eBook: Turn the Page; ST - Terok Nor novel: Day of the Vipers)

The USS Gorkon spent three weeks defending the Delavi system during the Dominion War. (ST novel: Articles of the Federation)

This system was the origin of Delavian chocolate. (DS9 episode: "Improbable Cause")

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