Parallax measurements of the system made by the Hipparcos spacecraft put it at a distance of about 220 light-years, or 67 parsecs.

[1] Zeta Delphini has a spectral type of A3V, implying it is an A-type main-sequence star.

[3] These types of stars are bluish-white colored, and have effective temperatures between 7100 and 11500 K:[7] Zeta Delphini has a temperature of 8336 K.[3] Its age is estimated to be around 500 million years, considerably younger than the Sun.

Zeta Delphini B is a brown dwarf with a spectral type of L5 (but may be from L3 to L7), and has a mass of about 55 Jupiters.

At over 13 arcseconds away, this brown dwarf is separated at least 910 AU from Zeta Delphini.