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1108 Demeter
1108 Demeter, provisional designation , is a dark asteroid from the inner regions of the asteroid belt, approximately in diameter. It was discovered on 31 May 1929, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory near Heidelberg, Germany. The asteroid was named after Demeter, the Greek goddess of fruitful soil and agriculture. It has a rotation period of 9.846 hours. Orbit and classification ''Demeter'' is a non-Asteroid family, family asteroid of the main belt's Background asteroid, background population when applying the hierarchical clustering method to its proper orbital elements. Based on osculating Keplerian orbital elements, it has also been classified as a member of the Phocaea family (), a large family of S-type asteroid, stony asteroids, different to ''Demeter'' spectral type ''(see below)''. It orbits the Sun in the Kirkwood gap, inner main-belt at a distance of 1.8–3.1 Astronomical unit, AU once every 3 years and 9 months ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Reinmuth
Karl Wilhelm Reinmuth (4 April 1892 in Heidelberg – 6 May 1979 in Heidelberg) was a German astronomer and a prolific discoverer of 395 minor planets. Scientific career From 1912 to 1957, Reinmuth was working as an astronomer at the Landessternwarte Heidelberg-Königstuhl, Heidelberg Observatory (german: Landessternwarte Heidelberg-Königstuhl) an astronomical observatory on the Königstuhl (Odenwald), Königstuhl hill above Heidelberg in southern Germany. He was a member at the minor planet studies group at Astronomisches Rechen-Institut between 1947 and 1950, and later became "Oberobservator" or chief-observer at Heidelberg Observatory until his retirement in 1957. Reinmuth obtained more than 12,500 precise astrometric measurements of minor planets' positions on photographic plates, an enormous accomplishment before computer-based assistance existed. Honours The outer main-belt asteroid 1111 Reinmuthia, discovered by himself at Heidelberg in 1912, was named in his hono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |