803 Picka
803 Picka (prov. designation: or ) is a large and dark background asteroid from the outer regions of the asteroid belt. It was discovered on 21 March 1915, by Austrian astronomer Johann Palisa at the Vienna Observatory. The carbonaceous D-type asteroid has a rotation period of 5.1 hours and measures approximately in diameter. It was named after Czech physician Friedrich Pick (1867–1921). Orbit and classification Picka is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the outer asteroid belt at a distance of 3.0–3.4 AU once every 5 years and 9 months (2,094 days; semi-major axis of 3.2 AU). Its orbit has an eccentricity of 0.07 and an inclination of 9° with respect to the ecliptic. On 8 July 1899, the asteroid was first observed as at the Boyden Station of the Harvard Observatory in Arequipa, Peru. The body's observation arc begins with its official discovery observation by Johann Palisa at Vienna Observatory on 21 March 1915. Naming This minor planet was named after Czech physician Friedrich Pick (1867–1921) from Prague , who was the first physician to introduce endoscopic methods in medicine.