Planet Earth
International Astronomical Union WGSN

IAU: Pisces

Profile / Characteristics

English translationLatin declination and pronunciationsSize/ °²# stars
(visible)
the Two FishPisces – PICE-eez, PISS-eez
Piscium – PICE-ee-um, PISH-ee-um
889148

Main Star (brightest one):

DesignationHIP numbername in IAU-CSNbrightness
eta PscHIP 7097Alpherg3.62 mag (V)

Our (modern) Explanation

Initially, this constellation was named The Swallow in ancient Babylon as it marks the position in the year when the swallows return to the northern latitudes. It was positioned next to the goddess of love (And) and the god of wisdom and witchcraft (Aqr). In some West Asian cultures, a fish was depicted next to the goddess as her attribute. Other (small) fish surrounded the god depicted next to heavenly waters. Reflecting many transformations and reinterpretations in the Graeco-Babylonian world of the first millennium BCE, the huge swallow was first reinterpreted as a small bird next to Aqr and the original swallow tail of the huge image was changed into a connecting ribbon between this small swallow and the fish next to the goddess. This image of a bird and fish connected with a mysterious ribbon was then reinterpreted as stockfish, two fish connected with a ribbon, by changing the swallow into a fish. Greek mythology, unable to explain the foreign images (of gods and swallow-fish etc.), has a story of Aphrodite/ Venus.

Ancient Globes

depiction of this constellation on the Farnese Globe (2nd century CE)
depiction of this constellation on the Kugel Globe (1st century BCE)
depiction of this constellation on the Mainz Globe (2nd century CE)

Farnese Globe

Kugel Globe

Mainz Globe

Ancient Lore & Meaning

Aratus

Reference:
English translation by Douglas Kidd (1997).
Aratus: Phaenomena, Cambridge Classical Texts and Commentaries, Series Number 34

Online available: translation by Mair (1921) 

Pseudo-Eratosthenes

they are offsprings of the giant fish, they are spearated from one another but have a connecting band

References:
French translation by:
Jordi Pàmias i Massana and Arnaud Zucker (2013). Ératosthènes de Cyrène – Catastérismes, Les Belles Lettres, Paris

English version in:
Robin Hard (2015): Eratosthenes and Hyginus Constellation Myths with Aratus’s Phaenomena, Oxford World’s Classics

Early Modern Interpretation

Contemporary

As one of their first tasks in the 1920s, the newly founded International Astronomical Union (IAU) established constellation standards. The Belgian astronomer Eugène Delporte was assigned to the task to define borders of constellations parallel to lines of declination and right ascension. They were accepted by the General Assembly in 1928. The standardized names and abbreviations had already been accepted in 1922 and 1925.  

current IAU-star chart
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