33 cygni is a single star located 159 light years away in the northern constellation cygnus. its is visible to the naked eye as a white-hued star with an apparent visual magnitude of 4.28. the star is moving closer to the earth with a heliocentric radial velocity of −16 km/s. eggen (1995) listed it as a proper motion candidate for membership in the ic 2391 supercluster.