844 Leontina
| Discovery [1] | |
|---|---|
| Discovered by | J. Rheden |
| Discovery site | Vienna Observatory |
| Discovery date | 1 October 1916 |
| Designations | |
| MPC designation | 844 Leontina |
|
Named after
|
Lienz (discoverer's home town)[2] |
| 1916 AP · 1935 BN 1953 FL1 · A902 EC |
|
| main-belt (outer) · Veritas family | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.68 yr (41,523 days) |
| Aphelion | 3.4275 AU |
| Perihelion | 2.9844 AU |
| 3.2060 AU | |
| Eccentricity | 0.0690 |
| 5.74 yr (2,097 days) | |
| 147.34° | |
| Inclination | 8.7891° |
| 348.77° | |
| 349.01° | |
| Physical characteristics | |
| Dimensions | 39.90±0.79 km[3] 49.558±0.785 km[4] 28.85±1.47 km[5] 35.73 km (calculated)[6] |
| 6.7859±0.0002 h[7] 6.784±0.001 h[7] 6.7965±0.0028 h[8] |
|
| 0.200±0.010[3] 0.1255±0.0132[4] 0.307±0.036[5] |
|
| SMASS = X[1] · S [6] | |
| 9.6[1] | |
844 Leontina, provisional designation 1916 AP, is a stony asteroid from the outer region of the asteroid belt, about 36 kilometers in diameter. It was discovered on 1 October 1916, by Austrian astronomer Joseph Rheden at Vienna Observatory, Austria.[9]
The X-type asteroid is presumably a member of the Veritas family, located in the outer main belt and named after its apparent largest constituent, 490 Veritas.[citation needed] It orbits the Sun at a distance of 3.0–3.4 AU once every 5 years and 9 months (2,097 days). Its orbit is tilted by 9 degrees to the plane of the ecliptic and shows an eccentricity of 0.07.[1]
Multiple light-curve analysis rendered a well-defined, concurring rotation period of 6.79 hours.[7][8] According to the surveys carried out by the Japanese Akari satellite and the U.S. Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, measurements of the body's brightness gave a divergent albedo of 0.13, 0.20 and 0.31, respectively.[3][4][5] As a result the asteroid's estimated diameter strongly varies between 28 and 40 kilometers. The Collaborative Asteroid Lightcurve Link (CALL) considers Akari's albedo-figure of 0.20 the most accurate one and consequently assumes the otherwise classified X-type body to be of a stony surface composition with a calculated diameter of 36 kilometers.[6]
The minor planet was named by the discoverer for his home town Lienz in East Tyrol, Austria.[2]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 5.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 6.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 7.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 8.0 8.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
- The Asteroid Veritas: An intruder in a family named after it?
- 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
- 844 Leontina at the JPL Small-Body Database
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