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1681 Steinmetz : ウィキペディア英語版 | 1681 Steinmetz
1681 Steinmetz, provisional designation 1948 WE, is a stony asteroid from the middle region of the asteroid belt, about 16 kilometers in diameter. It was discovered on 23 November 1948 by French female astronomer Marguerite Laugier at Nice Observatory in south-eastern France.〔 The S-type asteroid orbits the Sun at a distance of 2.1–3.2 AU once every 4 years and 5 months (1,618 days). Its orbit shows an eccentricity of 0.20 and is tilted by 7 degrees to the plane of the ecliptic. It has a rotation period of 9.0 hours〔 and an albedo of 0.16–0.20, according to Akari and WISE/NEOWISE, while the Lightcurve Datatbase project assumes a somewhat lower albedo of 0.10.〔〔〔 According to a proposal by Otto Kippes, who verified the discovery, it was named after Julius Steinmetz (1893–1965), a German amateur astronomer, orbit computer, and pastor from Gerolfingen in Bavaria.〔 == References ==
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