| Discovery[1] | |
|---|---|
| Discovered by | T. Smirnova |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 30 July 1970 |
| Designations | |
| (2032) Ethel | |
Named after | Ethel Voynich (Irish writer)[2] |
| 1970 OH · 1952 DU 1960 WM · 1965 UG1 1971 UD3 | |
| main-belt · (outer) background[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.18 yr (23,807 days) |
| Aphelion | 3.4615AU |
| Perihelion | 2.6831 AU |
| 3.0723 AU | |
| Eccentricity | 0.1267 |
| 5.39yr (1,967 days) | |
| 269.94° | |
| 0° 10m 58.8s / day | |
| Inclination | 1.5097° |
| 30.178° | |
| 295.71° | |
| Physical characteristics | |
| Dimensions | 36.007±0.105 km[4] |
| 0.034±0.005[5] | |
| 11.4[1] | |
2032 Ethel, provisional designation1970 OH, is a dark backgroundasteroid from the outer regions of theasteroid belt, approximately 36 kilometers in diameter. It was discovered on 30 July 1970, by Soviet astronomerTamara Smirnova at theCrimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.[6] The asteroid was named after Irish writerEthel Voynich.[2]
Ethel is a non-family asteroid of the main belt'sbackground population.[3] It orbits the Sun in theouter asteroid belt at a distance of 2.7–3.5 AU once every 5 years and 5 months (1,967 days;semi-major axis 3.07 AU). Its orbit has aneccentricity of 0.13 and aninclination of 2° with respect to theecliptic.[1]
The body'sobservation arc begins with its identification as1952 DU atGoethe Link Observatory in February 1952, more than 18 years prior to its official discovery observation Nauchnyj.[6]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Ethel measures 36.007 kilometers in diameter and its surface has analbedo of 0.034.[4][5]
As of 2017, no rotationallightcurve ofEthel has been obtained from photometric observations. The body'srotation period, poles and shape remain unknown.[1][7]
Thisminor planet was named afterEthel Lilian Voynich (1864–1960), an Irishwriter of the late Victorian epoch, best known for her novelThe Gadfly.[2] The officialnaming citation was published by theMinor Planet Center on 1 September 1978 (M.P.C. 4482).[8]
