1169 Alwine
| Discovery [1] | |
|---|---|
| Discovered by |
M. Wolf M. Ferrero |
| Discovery site | Heidelberg Obs. |
| Discovery date | 30 August 1930 |
| Designations | |
| MPC designation | 1169 Alwine |
Named after |
Alwine (German first-name)[2] |
|
1930 QH · 1937 VH 1955 SK1 · 1955 SR1 | |
| main-belt | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.64 yr (31279 days) |
| Aphelion | 2.6756 AU (400.26 Gm) |
| Perihelion | 1.9609 AU (293.35 Gm) |
| 2.3182 AU (346.80 Gm) | |
| Eccentricity | 0.15413 |
| 3.53 yr (1289.3 d) | |
| 44.411° | |
| 0° 16m 45.228s / day | |
| Inclination | 4.0492° |
| 255.15° | |
| 177.07° | |
| Earth MOID | 0.973996 AU (145.7077 Gm) |
| Jupiter MOID | 2.59041 AU (387.520 Gm) |
| Jupiter Tisserand parameter | 3.560 |
| Physical characteristics | |
| Dimensions | 15±6 km (calculated)[3] |
| 12.8[1] | |
|
| |
1169 Alwine, provisional designation 1930 QH, is an asteroid from the inner regions of the asteroid belt, roughly 15 kilometers in diameter. It was discovered on 30 August 1930, by the astronomers Max Wolf and Mario Ferrero at the Heidelberg Observatory in southern Germany.[4]
The asteroid orbits the Sun at a distance of 2.0–2.7 AU once every 3 years and 6 months (1,289 days). Its orbit is tilted by 4 degrees to the plane of the ecliptic and shows an eccentricity of 0.15. Little is known about the asteroids effective size, composition, albedo and rotation, despite having a well-observed orbit with the lowest possible uncertainty – a condition code of 0 – and an observation arc that spans over a period of nearly a century.[1]
Based on its absolute magnitude of 12.8, its diameter could be anywhere between 9 and 21 kilometers, assuming an albedo in the range of 0.05 to 0.25.[3] Since many asteroids in the inner main-belt are of a silicaceous rather than of a carbonaceous composition, with relatively high albedos, typically around 0.20, the asteroid's diameter might be on the lower end of NASA's published conversion table, as the higher the reflectivity (albedo), the smaller the body's diameter for a given intrinsic brightness (absolute magnitude).[3]
The minor planet is named after a common German female name. Any reference of this name to a person or occurrence is unknown.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 1169 Alwine (1930 QH)" (2015-11-19 last obs.). Jet Propulsion Laboratory. Retrieved 1 May 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1169) Alwine. Springer Berlin Heidelberg. p. 98. ISBN 978-3-540-29925-7. Retrieved December 2015.
- 1 2 3 "Absolute Magnitude (H)". NASA/JPL. Retrieved 2014-06-24.
- ↑ "1169 Alwine (1930 QH)". Minor Planet Center. Retrieved December 2015.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1169 Alwine at the JPL Small-Body Database
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