Williamina Fleming

(1857 - 1911 AD)

American astronomer who was the foremost of the Harvard College Observatory assistants. She was hired by Edward C. Pickering at Harvard and worked on the Henry Draper Memorial, which had been established after Henry Draper's death by his widow. She classified stars on the basis of objective prism surveys and her work was published in 1890 as The Draper Catalogue of Stellar Spectra. She discovered 222 new variable stars, 10 novae, and 94 Wolf-Rayet Stars.

**The preceding information is provided by the Eric Weisstein's World of Scientific Biogra.**