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Quadrant of the southern sky

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Constellation FamiliesContains members of the Bayer, Heavenly Waters, la Caille, Orion and Perseus families, and fragments of the Zodiac family
Right Ascension00h00 to 06h00
Declination0° (Celestial Equator) to -90° (Southern Celestial Pole)
ConstellationsFully contained: Caelum, Fornax, Horologium, Hydrus, Reticulum
Almost fully contained: Eridanus
Partial: Cetus, Columba, Dorado, Lepus, Mensa, Octans, Orion, Phoenix, Pictor, Pisces, Sculptor, Taurus, Tucana
Area (sq deg)5,156.625
Brightest StarRigel in Orion
Optimum VisibilityOctober to January (Usually visible from southern latitudes)
NotesEridanus is a special case in the list of constellations above. It is not strictly contained entirely within the quadrant, because a thin sliver at the constellations's northern edge extends into quadrant NQ1. That aside, Eridanus fills much of quadrant SQ1, extending from the celestial equator southwards as far as declination -58°.


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