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| Constellation Families | Contains members of the Heavenly Waters, Hercules, Perseus, Ursa Major and Zodiac families | | Right Ascension | 18h00 to 24h00 (0h00) | | Declination | 0° (Celestial Equator) to +90° (Northern Celestial Pole) | | Constellations | Fully contained: Cygnus, Delphinus, Equuleus, Lyra, Sagitta, Vulpecula
Partial: Andromeda, Aquarius, Aquila, Cassiopeia, Cepheus, Draco, Hercules, Ophiuchus, Pegasus, Pisces, Serpens, Ursa Minor | | Area (sq deg) | 5,156.625 | | Brightest Star | Vega in Lyra | | Optimum Visibility | July to October (Usually visible from northern latitudes) | | Notes | The constellations of Cygnus and Lyra, prominent in the summer skies of the northern hemisphere, dominate this quadrant of the celestial sphere. Their bright stars Deneb and Vega combine with Altair in Aquila to define the formation known as the Summer Triangle. |
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