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 Rydygier was buried at Łyczaków Cemetery, later his remains were moved to the officer part of Cemetery of the Defenders of Lwów. Ludwik Rydygier Ludwik Rydygier (German: Ludwig Anton Rydygier von Ruediger; 21 August 1850 – 25 June 1920) was a German-Polish surgeon and professor of medicine. Born in Dossoczyn (today Dusocin) near Graudenz (Grudziądz), at the time part of the Province of Prussia after partitioning of Poland. Since childhood he accented his Polish origin. Between 1859 and 1861 he was learning in gymnasium in Konitz, then also in gymnasium in Kulm, which he graduated in 1869. In years 1869-1878 he