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1936 Lugano
1936 Lugano, provisional designation 1973 WD, is a dark asteroid from the asteroid belt about 30 kilometers in diameter. It was discovered on November 24, 1973 by astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland.〔 It orbits the Sun at a distance of 2.3–3.0 AU once every 4 years and 4 months (1,599 days)〔 and has a rotation period of nearly 20 hours.〔 Observations of the carbonaceous Ch-type asteroid have resulted in a lower albedo and hence larger diameter than previously estimated. While in 2004, the ''Supplemental IRAS Minor Planet Survey'' (SIMPS) using data from the Infrared Astronomical Satellite, IRAS, gave a geometric albedo of 0.10 and a diameter of 25 kilometers,〔 more recent measurements by NEOWISE suggested the asteroid to be much darker, with an albedo of only 0.03 and a diameter of nearly 34 kilometers.〔 The asteroid is named after the Swiss-Italian city of Lugano, located south of the Alps and known for its mild climate. During the winter half-year of 1973/74, Paul Wild discovered three more asteroids, 1935 Lucerna, 1937 Locarno and 1938 Lausanna, which he named after the Swiss cities Lucerne, Locarno and Lausanne, respectively, composing a quartet of sequentially numbered, thematically named asteroids.〔 == References ==
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