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| Constellation Families | Contains members of the Bayer, Heavenly Waters, la Caille, Orion and Perseus families, and fragments of the Zodiac family | | Right Ascension | 00h00 to 06h00 | | Declination | 0° (Celestial Equator) to -90° (Southern Celestial Pole) | | Constellations | Fully 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 Star | Rigel in Orion | | Optimum Visibility | October to January (Usually visible from southern latitudes) | | Notes | Eridanus 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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