summer triangle Definition

triangulum australe, binary star, northern cross, little bear, great bear, giant star, star chart, deneb, stelliform, enif, white dwarf, constellation, intersidereal, asterism, sterope, multiple star, corona borealis, binary system, leo minor, canis major, siderostat, dog star, inferior planet, major planet, circumjovial, minor planet, superior planet, giant planet, absolute magnitude, stellular, acronycal, sidereal time, coma berenices, altair, beta centauri, betelgeuse, midnight sun, apocynthion, corona australis, asteriated, equinoctial circle, chromatoscope, star, canis minor, little dipper, astrognosy, sidereal year, celestial equator, astrophobia, solar telescope, apparent magnitude, subconstellation, inner planet, orion, interplanetary space, roman deity, solar year, dwarf star, visual binary, sabianism, star shell, nebula, apastron, variable star, zodiacal light, oort cloud, arcturus, ursa minor, almucantar, proper motion, astrocompass, apolune, parhelic circle, extraterrestrial object, evection, tropical year, moon, light second, astronomical year, apojove, acronycally, astrography, equinoctial point, celestial pole, astronomy unit, antares, proxima centauri, pleiades, microscopium, ursid, catasterism, superlunar, andromeda galaxy, celestial sphere, starproof, light year, nubecula, planetary nebula, moonward, aldebaran,