Horace Tuttle discovered or co-discovered numerous comets, including 55P/Tempel-Tuttle (parent body of the Leonid meteor shower, discovered by Tuttle January 6, 1866), and 109P/Swift-Tuttle (parent body of the Perseid meteor shower, disc. July 19, 1862), the "Great Comet of 1860", C/1860 III (disc. June 22, 1860), C/1859 G1 Tempel (disc April 24, 1859). Other periodic comets that bear his name are 8P/Tuttle (parent comet of the Ursid meteor shower; disc. January 5, 1858 "rather faint") and 41P/Tuttle-Giacobini-Kresak (disc. May 3, 1858 in Leo Minor "very faint"), C/1861 Y1 Tuttle, (disc. December 19, 1862), C/1859 G1 Tempel (disc. April 28, 1859). The asteroid 5036 Tuttle was named in his honor. In 1859 he was awarded the Lalande Prize of the French Academy of Sciences for the discovery of comets 1858I, 1858III, and 1858VII.