1389 Onnie
hendrik van gent
['lord rayleigh', 'lyudmila chernykh', 'lyudmila zhuravleva', 'charles messier', 'microsoft', 'roger penrose', 'evangelista torricelli', 'rudolf diesel', 'ptolemy', 'harlow shapley', 'werner heisenberg', 'stallman', 'emmett chapman', 'turing', 'harry edwin wood', 'ernest rutherford', 'leibniz', 'urbain le verrier', 'cyril jackson', 'nanking', 'cavendish', 'michael brown', 'sir alexander fleming', 'sergey belyavsky', 'herschel', 'crimean astrophysical observatory', 'nikolai chernykh', 'hyperboloid', 'carl friedrich gauss', 'egide walschaerts', 'nikolai stepanovich chernykh', 'franz anton mesmer', 'auguste charlois', 'henri cartan', 'carl wilhelm scheele', 'hyperloop', 'speke', 'bickley', 'sir nigel gresley', 'max wolf', 'nicolas bourriaud', 'christopher latham sholes', 'george van biesbroeck', 'bartolomeo cristofori', 'sylvain arend', 'linear', 'lionel penrose', 'frederick scott archer', 'kant', 'gerry anderson', 'otto hahn', 'carl auer von welsbach', 'tsutomu seki', 'dmitri mendeleev', 'noam chomsky', 'kirchhoff', 'franz kaiser', 'georg cantor', 'edward said', 'kin endate', 'ephraim shay', 'babbage', 'marguerite laugier', 'kazuro watanabe', 'bernhard schmidt', 'edwin mcmillan', 'sequoyah', 'niels henrik abel', 'conway', 'gotthold ephraim lessing', 'seymour papert', 'carlos torres', 'james dunlop', 'chad trujillo', 'robert luther', 'sir arthur evans', 'mikhail lazarev', 'thomas newcomen', 'alonzo church', 'gridshell', 'liisi oterma', 'paolo maffei', 'bill mollison', 'christopher cockerell', 'sir winston churchill', 'alessandro malaspina', 'edward bowell', 'marie curie', 'carl gustav mosander', 'claude chappe', 'schelte bus', 'blackberry', 'urata', 'ingrid', 'toshimasa furuta', 'nauchnyj', 'george westinghouse', 'pieter zeeman', 'carl wirtanen']
1389 Onnie
1389 Onnie, provisional designation 1935 SS1, is a stony asteroid from the outer region of the asteroid belt, about 13 kilometers in diameter. It was discovered by Dutch astronomer Hendrik van Gent at Leiden Southern Station, annex to the Johannesburg Observatory in South Africa, on 28 September 1935. The S-type asteroid is a member of the Koronis family, a group consisting of about 200 known bodies. It orbits the Sun at a distance of 2.8–2.9 AU once every 4 years and 10 months (1,773 days). Its orbit is nearly circular with a very low eccentricity of 0.02 and almost coplanar to the plane of the ecliptic, tilted by only 2 degrees. It has a rather long rotation period of about 23 hours and an albedo of 0.17, according to the survey carried out by the space-based Wide-field Infrared Survey Explorer and subsequent NEOWISE mission. The Collaborative Asteroid Lightcurve Link (CALL) assumes as somewhat higher albedo of 0.24, which is more typical for a silicaceous asteroid. The minor planet was named after A. Kruyt, sister-in-law of astronomer G. Pels (1893–1966). Pels, who proposed the minor planet's name, was as a lifelong member of the Leiden Observatory's staff, observer of minor planets at Leiden, and orbit computer for many of the discoveries made by Hendrik van Gent. The minor planet 1667 Pels was named in his honour.