771 Libera
.png)
A light-curve based 3-D model of 771 Libera
|
|
| Discovery [1] | |
|---|---|
| Discovered by | J. Rheden |
| Discovery site | Vienna Observatory |
| Discovery date | 21 November 1913 |
| Designations | |
| MPC designation | 771 Libera |
|
Named after
|
friend of discoverer[2] |
| 1913 TO · 1958 HA | |
| main-belt · (middle) [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 101.75 yr (37,166 days) |
| Aphelion | 3.3091 AU |
| Perihelion | 1.9924 AU |
| 2.6508 AU | |
| Eccentricity | 0.2483 |
| 4.32 yr (1,576 days) | |
| 176.79° | |
| Inclination | 14.936° |
| 218.20° | |
| 227.37° | |
| Physical characteristics | |
| Dimensions | 29.38±1.1 km (IRAS:6)[1][4] 28.91±0.72 km[5] 29.000±1.403 km[6] 29.33 km (derived)[3] |
| 5.892±0.002 h[7] 5.92 h[8] 5.886±0.001 h[9] 5.89±0.05 h[9] 5.890±0.001 h[10] |
|
| 0.1303±0.010 (IRAS:6) [4] 0.141±0.008[5] 0.1299±0.0158[6] 0.1226 (SIMPS)[3] |
|
| B–V = 0.687 U–B = 0.300 X (Tholen), X (SMASS), X [3] |
|
| 10.49[1] | |
771 Libera, provisional designation 1913 TO, is a metallic asteroid from the middle region of the asteroid belt, about 29 kilometers in diameter. It was discovered by Austrian astronomer Joseph Rheden at the Vienna Observatory in Austria, on 21 November 1913.[11]
The metallic X-type asteroid orbits the Sun at a distance of 2.0–3.3 AU once every 4 years and 4 months (1,576 days). Its orbit shows an eccentricity of 0.25 and is tilted by 15 degrees to the plane of the ecliptic. A photometric observation of the asteroid's light-curve performed at the Palmer Divide Observatory during 1999 rendered a rotation period of 5.892±0.002 hours with a brightness variation of 0.57 magnitude.[7] The result concurs with several previous observations, including a photometric analysis conducted over a twelve-year interval.[8][9][10]
According to the surveys carried out by the Infrared Astronomical Satellite, IRAS, the Japanese Akari satellite, and the U.S. Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid's surface has an albedo of 0.13 and 0.14, respectively, while the Collaborative Asteroid Lightcurve Link publishes a slightly lower figure of 0.12 from an alternative result of the Supplemental IRAS Minor Planet Survey.[3]
The minor planet was named by Mrs. Hedwig Rheden in honor of a friend of the discoverer.[2]
References
- ↑ 1.0 1.1 1.2 1.3 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 3.3 3.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 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.
- ↑ 9.0 9.1 9.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 10.0 10.1 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
- 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
- 771 Libera at the JPL Small-Body Database
<templatestyles src="Asbox/styles.css"></templatestyles>
_mathilde.jpg){kind=small} |
This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |
