It has an apparent magnitude of 5.54,[2] making it faintly visible to the naked eye.
The star is relatively close at a distance of 198 light years[1] but is receding with a poorly constrained radial velocity of 2 km/s.
[5] 16 Delphini is a chemically peculiar A-type main-sequence star with a stellar classification of A5 V. It has twice the Sun's mass,[7] 1.9 times it's radius,[8] and shines at 18.7 L☉.
16 Del is 400 million years old[7] – 56.5% through its main sequence lifetime[3] – and spins rapidly with a projected rotational velocity of 159 km/s.
[10] 16 Del has a companion that was first discovered by John Herschel and was even noted to be a spectroscopic binary.