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Quadrant of the southern sky

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Constellation FamiliesContains members of the Bayer, Hercules, La Caille and Zodiac families
Right Ascension12h00 to 18h00
Declination0° (Celestial Equator) to -90° (Southern Celestial Pole)
ConstellationsFully 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 StarAlpha Centauri (Rigil Kentaurus) in Centaurus
Optimum VisibilityApril to July (Usually visible from southern latitudes)
NotesThe 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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