_Mieke.png) Shape model ofMieke from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | H. van Gent |
| Discovery site | Johannesburg Obs. (Leiden Southern Station) |
| Discovery date | 10 May 1934 |
| Designations | |
| (1753) Mieke | |
Named after | Mieke Oort(wife ofJan Oort)[2] |
| 1934 JM · 1951 SM 1951 VB · 1967 UG | |
| main-belt · Eos[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 82.98 yr (30,307 days) |
| Aphelion | 3.2624AU |
| Perihelion | 2.7733 AU |
| 3.0178 AU | |
| Eccentricity | 0.0810 |
| 5.24yr (1,915 days) | |
| 289.63° | |
| 0° 11m 16.8s / day | |
| Inclination | 11.366° |
| 58.433° | |
| 229.49° | |
| Physical characteristics | |
| Dimensions | 19.445±0.208[4] 19.55±0.60 km[5] 19.604±0.289 km[6] 21.40 km(calculated)[3] 22.08±1.45 km[7] |
| 8.8h[8] 10.19942±0.00001 h[9] | |
| 0.14(assumed)[3] 0.144±0.021[7][4] 0.1672±0.0307[6] 0.173±0.012[5] | |
| S[3] | |
| 10.80±0.33[10] · 11.00[7] · 11.1[1][3][5][6] | |
1753 Mieke (prov. designation:1934 JM) is a stonyEos asteroid from the outer region of theasteroid belt, approximately 20 kilometers in diameter. It was discovered on 10 May 1934, by Dutch astronomerHendrik van Gent at the Leiden Southern Station, annex to theJohannesburg Observatory in South Africa.[11] The asteroid was named after Mieke Oort, wife of Dutch astronomerJan Oort.[2]
TheS-type asteroid is a member of theEos 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 in theouter main-belt at a distance of 2.8–3.3 AU once every 5 years and 3 months (1,915 days). Its orbit has aneccentricity of 0.08 and aninclination of 11° with respect to theecliptic.[1]
As noprecoveries was taken, and no prior identifications were made,Mieke'sobservation arc begins with its official discovery observation at Johannesburg in 1934.[11]
A rotationallightcurve ofMieke was obtained from photometric observations by Swedish astronomerClaes-Ingvar Lagerkvist analysis atUppsala Observatory in March 1975. It gave arotation period of 8.8 hours with a brightness variation of 0.20magnitude (U=2).[8] Published in March 2016, a modeled lightcurve, using the Lowell Photometric Database, gave a period of approximately 10.199 hours (U=n.a.).[9]
According to the surveys carried out by the JapaneseAkari satellite and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Mieke measures between 19.44 and 22.08 kilometers in diameter, and its surface has analbedo between 0.144 and 0.173.[4][5][6][7] TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.14 and calculates a diameter of 21.40 kilometers based on anabsolute magnitude of 11.1.[3]
Thisminor planet was named for Mieke Oort-Graadt van Roggen (1906–1993), wife of Dutch astronomy legendJan Oort, who was director of theLeiden Observatory from 1945–1970. He had previously been honoured with the asteroid1691 Oort.[2] The official naming citation was published by theMinor Planet Center on 1 June 1980 (M.P.C. 5357).[12]
