1169 Alwine
Asteroid
From Wikipedia, the free encyclopedia
1169 Alwine, provisional designation 1930 QH, is a Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 30 August 1930, by German and Italian astronomers Max Wolf and Mario Ferrero at Heidelberg Observatory in southwest Germany.[5] Any reference of its name to a person is unknown.[2]
| 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 | 2.6775 AU |
| Perihelion | 1.9599 AU |
| 2.3187 AU | |
| Eccentricity | 0.1547 |
| 3.53 yr (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] | |
Orbit and classification
Alwine is a member of the Flora family (402),[3] a giant asteroid family and the largest family of stony asteroids in the main belt.[6]:â23â It orbits the Sun in the inner asteroid belt at a distance of 2.0â2.7 AU once every 3 years and 6 months (1,290 days; semi-major axis of 2.32 AU). Its orbit has an eccentricity of 0.15 and an inclination of 4° with respect to the ecliptic.[1] As no precoveries were taken, and no prior identifications were made, Alwine's observation arc begins with its official discovery observation at Heidelberg in August 1930.[5]
Physical characteristics
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Alwine measures 7.89 kilometers in diameter, and its surface has an albedo of 0.179.[4] Based on a generic magnitude-to-diameter conversion, its diameter is between 7 and 17 kilometers for an absolute magnitude of 12.8 and an albedo in the range of 0.05 to 0.25.[7]
Lightcurve
As of 2017, no rotational lightcurves have been obtained. The body's rotation period, pole and shape remain unknown.[1][8]
Naming
This minor planet is named after a common German female name. Any reference of this name to a person or occurrence is unknown.[2]
Unknown meaning
Among the many thousands of named 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 between 164 Eva and 1514 Ricouxa and were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth.[9]
