Annie Jump Cannon American astronomer whose cataloging work was instrumental in the development of contemporary stellar classification was born #OTD in 1863.
In 1896 she became a member of ‘Pickering’s Women’, a group of women hired by Harvard Observatory to process astronomical data &, in particular, to complete the Draper Catalogue of Stellar Spectra. Published in 1890, the catalogue contained spectroscopic classifications for over 10,000 stars. @Soc.Hist.Astron.
