| Discovery[1] | |
|---|---|
| Discovered by | M. F. Wolf M. Ferrero |
| Discovery site | Heidelberg Obs. |
| Discovery date | 30 August 1930 |
| Designations | |
| (1169) Alwine | |
Named after | unknown[2] |
| 1930 QH · 1937 VH 1955 SK1 · 1955 SR1 | |
| main-belt · (inner) Flora[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.77 yr (31,691 days) |
| Aphelion | 2.6775AU |
| Perihelion | 1.9599 AU |
| 2.3187 AU | |
| Eccentricity | 0.1547 |
| 3.53yr (1,290 days) | |
| 155.85° | |
| 0° 16m 45.12s / day | |
| Inclination | 4.0522° |
| 255.08° | |
| 177.29° | |
| Physical characteristics | |
| Dimensions | 7.893±0.185 km[4] |
| 0.179±0.024[4] | |
| 12.8[1] | |
1169 Alwine, provisional designation1930 QH, is a Florianasteroid from the inner regions of theasteroid belt, approximately 8 kilometers in diameter. It was discovered on 30 August 1930, by German and Italian astronomersMax Wolf andMario Ferrero atHeidelberg Observatory in southwest Germany.[5] Any reference of its name to a person is unknown.[2]
Alwine is a member of theFlora family (402),[3] a giantasteroid family and the largest family ofstony asteroids in the main belt.[6]: 23 It orbits the Sun in theinner asteroid belt at a distance of 2.0–2.7 AU once every 3 years and 6 months (1,290 days;semi-major axis of 2.32 AU). Its orbit has aneccentricity of 0.15 and aninclination of 4° with respect to theecliptic.[1] As noprecoveries were taken, and no prior identifications were made,Alwine'sobservation arc begins with its official discovery observation at Heidelberg in August 1930.[5]
According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Alwine measures 7.89 kilometers in diameter, and its surface has analbedo of 0.179.[4] Based on a genericmagnitude-to-diameter conversion, its diameter is between 7 and 17 kilometers for anabsolute magnitude of 12.8 and analbedo in the range of 0.05 to 0.25.[7]
As of 2017, no rotationallightcurves have been obtained. The body'srotation period,pole and shape remain unknown.[1][8]
Thisminor planet is named after a common German female name. Any reference of this name to a person or occurrence is unknown.[2]
Among the many thousands ofnamed minor planets,Alwine is one of 120 asteroids, for which no official naming citation has been published. All of these low-numbered asteroids have numbers between164 Eva and1514 Ricouxa and were discovered between 1876 and the 1930s, predominantly by astronomersAuguste Charlois,Johann Palisa,Max Wolf andKarl Reinmuth.[9]
