Delphinus, the Dolphin constellation, is not a physical object with a specific distance from Earth. It is a pattern of stars that we perceive in the sky.

Stars in the constellation Delphinus are located at various distances from Earth. The closest star in Delphinus is likely S 504 at about 175 light-years away, while others can be thousands of light-years distant.

So, to answer your question, there isn't a single distance for Delphinus, as it's made up of many stars at different distances.