Discovered by H. van Gent MPC designation 1753 Mieke Discovered 10 May 1934 Discovery site Union Observatory | Discovery date 10 May 1934 Orbits Sun Asteroid group Asteroid belt | |
Alternative names 1934 JM · 1951 SM1951 VB · 1967 UG People also search for Sun, 2945 Zanstra, 1383 Limburgia | ||
1753 Mieke, provisional designation 1934 JM, is a stony Eoan asteroid from the outer region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 10 May 1934, by Dutch astronomer Hendrik van Gent at the Leiden Southern Station, annex to the Johannesburg Observatory in South Africa.
The S-type asteroid is a member of the Eos family, thought to have formed from a catastrophic collision of its parent body resulting in more than 4,000 known members of the family. It orbits the Sun at a distance of 2.8–3.3 AU once every 5 years and 3 months (1,914 days). Its orbit has an eccentricity of 0.08 and an inclination of 11° with respect to the ecliptic. As no precoveries was taken, and no prior identifications were made, Mieke's observation arc begins with its official discovery observation at Johannesburg in 1934.
A rotational light-curve of Mieke was obtained from photometric observations by Swedish astronomer Claes-Ingvar Lagerkvist analysis at Uppsala Observatory in March 1975. It gave a rotation period of 8.8 hours with a brightness variation of 0.20 magnitude (U=2). Published in March 2016, a modeled light-curve, using the Lowell Photometric Database, gave a period of approximately 10.199 hours (U=n.a.).
According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Mieke measures between 19.44 and 22.08 kilometers in diameter, and its surface has an albedo between 0.144 and 0.173. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.14 and calculates a diameter of 21.40 kilometers based on an absolute magnitude of 11.1.
This minor planet was named for Mieke Oort-Graadt van Roggen (1906–1993), wife of Dutch astronomy legend Jan Oort, who was director of the Leiden Observatory from 1945–1970. He had previously been honoured with the asteroid 1691 Oort. Naming citation was published on 1 June 1980 (M.P.C. 5357).