Johann Bayer
"51 Andromedae" is the star's Flamsteed designation. Ptolemy included this star in Andromeda in the "Almagest". It was for a time moved into the greater form of Perseus envisioned by Johann Bayer as Upsilon Persei. Flamsteed oversaw its constellation reverting and the International Astronomical Union (IAU) made his "51 Andromedae" its official designation in 1930.