Her eclipse map was published in June 1762, showing the path of the 1764 annular solar eclipse.
In June 1762, Nicole-Reine Lepaute published an eclipse map in the Jesuit journal Mémoires de Trévoux. The map showed the path of the annular solar eclipse expected on 1 April 1764, translating advanced calculations into a form that could be read and used by the scholarly public.
This publication was historically significant because it linked abstract computation to a practical visual aid. Eclipse prediction required careful work on timing, geography, and celestial mechanics, and the publication of a map made the results more accessible. Lepaute’s contribution is especially notable in an era when women’s scientific writing was often filtered through male collaborators or deprived of clear attribution. Her work appeared in a respected learned journal, giving visible form to her calculations.
The episode also shows the broader impact of her science. Eclipse prediction was important not only for astronomers but for audiences interested in the orderly behavior of the heavens. By producing a map, Lepaute helped demonstrate that exact calculation could forecast terrestrial visibility with precision. Her published work helped secure her reputation as one of the most accomplished women mathematicians and astronomers of the Enlightenment.