Input (grade 8): Discovery and naming Sylvia was discovered by N. R. Pogson on May 16, 1866 from Madras (Chennai), India Pogson, N. R. (1866), Minor Planet (87) Sylvia, Monthly Notices of the Royal Astronomical Society, Vol.
Output (grade 6): Discovery and naming Sylvia was found by N. R. Pogson on May 16, 1866 from Madras (Chennai), India. Pogson, N. R. (1866), Minor Planet (87) Sylvia, Monthly Notices of the Royal Astronomical Society, Vol.