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1617 Alschmitt : ウィキペディア英語版 | 1617 Alschmitt
1617 Alschmitt, provisional designation 1952 FB, is an assumed carbonaceous asteroid dwelling in the outer parts of the main belt. It was discovered on March 20, 1952, by French astronomer Louis Boyer at Algiers Observatory, Algeria.〔 The asteroid orbits the Sun at a distance of 2.8–3.6 AU once every 5.72 years (2,089 days). Its orbit shows an eccentricity of 0.13 and is tilted by 13 degrees to the plane of the ecliptic.〔 It has a rotation period of 7.06 hours.〔〔 According to the surveys carried out by WISE and NEOWISE, it has a diameter of about 21 kilometers with an albedo of 0.19 and 0.27, respectively.〔〔 Conversely, the Lightcurve database project assumes the asteroid to be a carbonaceous C-type body with a significantly lower albedo of 0.06 and a larger diameter of 39 kilometers.〔 Boyer named the asteroid after his colleague Alfred Schmitt (1907–1973), astronomer at Algiers, Strasbourg and Quito observatories, who, 20 years earlier, had named the asteroid 1215 Boyer in his honor.〔 == References ==
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