13 Delphini is a binary star[2] in the equatorial constellation Delphinus, with a combined apparent magnitude of 5.64.
[13] 13 Delphini has a blended stellar classification of A0 V,[4] indicating that it is an ordinary A-type main-sequence star.
However, when the components are analysed individually, the primary star is given a class of B9V.
[3] This is due to 13 Delphini having completed 86.1% of its main sequence lifetime[3] and has led one source to classify it as a subgiant instead.
[15] It spins rapidly with a projected rotational velocity of 170 km/s[11] and has an age of 307 million years.