By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) [CC-BY-3.0], via Wikimedia Commons
Piscis Austrinus
"The Southern Fish"
Abbreviation: PsA
Genitive: Piscis Austrini
Constellation family: Heavenly Waters
Nearest constellations: Aquarius, Capricornus, Grus,
Microscopium, and Sculptor
Right ascension: 22.29h
Declination: -30.66°
Visible between latitudes: +50° and -90°
Square degrees: 245
Luminary: Fomalhaut (Alpha Piscis Austrini)
Named stars: Fomalhaut
Notable deep sky objects: Hickson Compact Group 90
About
By Gerard Mercator [Public domain], via Wikimedia Commons
Piscis Austrinus is a small constellation in the Southern Hemisphere that is visible during October. Its luminary, Fomalhaut, is the eighteenth-brightest star in the night sky.
Piscis Austrinus belongs to the "water" section of the sky, so called because of the number of water-related constellations in the surrounding sky: Aquarius, Cetus, Delphinus, Eridanus, and Pisces.
In addition, Piscis Austrinus is a particularly old constellation; it has origins tracing back to Babylonian times.
Mythology
Piscis Austrinus is often depicted as a fish drinking from a jar held by neighboring Aquarius.
Gallery of objects in Piscis Austrinus
Hickson Compact Group 90 (three interacting galaxies):
By NASA, ESA and R. Sharples (University of Durham, U.K.) [CC-BY-3.0], via ESA/Hubble
Fomalhaut and surrounding region:
