Fleming, Williamina Paton Stevens (1857–1911)
She developed an empirical star classification scheme consisting of 17 categories (a huge advance upon Angelo Secchi's seminal scheme) and went on classify 10,351 stars based on their photographed spectra. Her work, published as a catalogue in 1890, was further refined by Annie Jump Cannon. While engaged in her monumental task, Fleming discovered 10 novae, about 60 new nebulae, and more than 300 variable stars.
Related category• ASTRONOMERS AND ASTROPHYSICISTS
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