1421 Esperanto in the outer asteroid belt at a distance of 2.8–3.4 AU once every 5 years and 5 months (1,983 days; semi-major axis of 3.09 AU). Its orbit has an eccentricity of 0.08 and an inclination of 10° with respect to the ecliptic. The body's observation arc begins with its first observation as at Heidelberg Observatory in October 1906, almost 30 years prior to its official discovery observation at Turku. This minor planet was named by the discoverer after the artificial language, Esperanto, which was created by inventor and writer, Ludwik Lejzer Zamenhof (1859–1917), who used the pseudonym "Doktoro Esperanto". The
Ludwik Młokosiewicz discovered and that were named after him include the Caucasian black grouse ("Tetrao mlokosiewiczi") and the golden peony ("Paeonia mlokosewitschii"). Beginning in 1889, Młokosiewicz urged the protection of the forested area at Lagodekhi; in 1912, three years after his death, the Russian viceregent in the Caucasus region declared what is now Lagodekhi Protected Areas. Ludwik Młokosiewicz Ludwik Franciszek Młokosiewicz (August 25, 1831 – 1909) was a Polish explorer, zoologist and botanist, who studied extensively in the Caucasus Mountains. He is one of the sons of Franciszek Młokosiewicz. Młokosiewicz was born in Warsaw, into a wealthy and aristocratic family. At the