Constellation Families | Contains members of the Bayer, Hercules, La Caille and Zodiac families | Right Ascension | 12h00 to 18h00 | Declination | 0° (Celestial Equator) to -90° (Southern Celestial Pole) | Constellations | Fully contained: Libra, Lupus, Norma, Scorpius, Triangulum Australe Partial: Apus, Ara, Centaurus, Chamæleon, Corvus, Crux, Hydra, Musca, Octans, Ophiuchus, Pavo, Sagittarius, Serpens, Virgo | Area (sq deg) | 5,156.625 | Brightest Star | Alpha Centauri (Rigil Kentaurus) in Centaurus | Optimum Visibility | April to July (Usually visible from southern latitudes) | Notes | The northern parts of this quadrant are dominated by the zodiacal constellations of Virgo, Libra and Scorpius. Southward, much of the large constellation of Centaurus falls within quadrant SQ3, as does the prominent cross shape of Crux. |
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