Alrisha

Alrisha is the brightest star in the constellation Pisces, positioned exactly where ancient astronomers imagined the cord that binds the constellation's two fish together. Arabic astronomers in the ninth century named it al-risha' — الرشاء — meaning 'the rope' or 'the cord,' seeing in this star's location the literal knot that joins the pair. The name was astronomical precision, not metaphor: Alpha Piscium sits at the junction of the two chains of stars that form the fish, the place where a rope would logically be fastened. Its visual magnitude of roughly 3.82 makes it faint to the naked eye but unmistakable in its geometric placement.

The star's history reaches back further than its Arabic name. Babylonian astronomers around 1200 BCE catalogued the fish of the zodiac in the MUL.APIN star lists, though they did not single out this particular point by name. Ptolemy listed the star in his Almagest around 150 CE, noting its position within Pisces but relying on Greek description rather than giving it a proper name. When Abd al-Rahman al-Sufi wrote his Book of Fixed Stars in 964 CE in Baghdad, he assigned Arabic names to the stars of the classical Greek catalogue, and this star became al-risha'.

The name traveled into Latin Europe through the translation movement of the twelfth century. Gerard of Cremona and other scholars working in Toledo around 1150 CE rendered Arabic star names into Latin transcriptions, producing hybrid forms like 'Alrescha' and 'Alrischa.' European astronomical tables of the thirteenth and fourteenth centuries repeated the name in varying spellings, each an attempt to capture Arabic phonology in Latin script. The simplified form 'Alrisha' emerged over centuries of copying and became the standard English spelling in modern astronomical catalogs.

In 2016, the International Astronomical Union's Working Group on Star Names formally adopted 'Alrisha' as the official proper name for Alpha Piscium, settling centuries of spelling variation with a single ruling. The cord that Babylonian sky-watchers imagined binding two fish now has a fixed address in the modern celestial catalog. What the IAU ratified was not an invention but a recognition: the name had been in use for over a thousand years. The word is seven letters in English and carries two millennia of accumulated astronomical attention.