cygnus Definition

genus cygnus, swan, swans, tundra, trumpeter, canis major, constellation, delphinus, arcturus, deneb, ursa minor, pleiades, coma berenices, canis minor, corona borealis, serpens, cepheus, eridanus, big dipper, little dipper, betelgeuse, celestial pole, vulpecula, supergiant, corona australis, monoceros, celestial equator, cassiopeia, northern cross, scorpius, canes venatici, pollux, hyades, regulus, goosander, horsehead nebula, lacerta, algol, asterism, tethys, circinus, orcus, beta centauri, summer triangle, fornax, achernar, crucis, procyon, aldebaran, ganymede, tucana, ngc, ixion, auspex, lyrae, nebulosity, omicron, puppis, trifid, bootes, capricornus, alcyone, hydroid, cetus, eclipsing binary, praesepe, little bear, triangulum australe, omega centauri, inceptor, coronagraph, hydrus, camelopardalis, astrometry, aeronomy, aerometric, nebulae, epsilon aurigae, enif, great bear, celestial sphere, nautic, barn swallow, ecliptic, spectrometric, paleogene, airglow, lunar excursion module, zechstein, galactic plane, denebola, frustum, scutum, fossae, callisto, alcmene, fomalhaut, ophiuchus, gradiometer, cygnet,