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
Samuel Ludwik Zasadius Samuel Ludwik Zasadius Samuel Ludwik Zasadius or "Zasadyus", "Sassadius" (c. 1695–1756) was a Polish religious writer, pastor and author of popular sermons and prayer-books. He was also known for propagating Polishness in Cieszyn Silesia. Zasadius was born c. 1695 in Komorzno as the son of a Polish pastor. He studied in Wittenberg and Jena. In the years of 1721–1730 Zasadius was a deacon and preacher of Jesus Church in Cieszyn. He led educational activity, published Polish magazines and learned the Polish language. In 1730 he was expelled (with pastors Johann Adam Steinmetz and Jan Muthmann) from the Austrian monarchy for