1355 Magoeba
| Discovery [1] | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 30 April 1935 |
| Designations | |
| MPC designation | 1355 Magoeba |
|
Named after
|
Magoeba (a native chief)[2] |
| 1935 HE | |
| main-belt (inner) · Hungaria [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 79.86 yr (29,170 days) |
| Aphelion | 1.9367 AU |
| Perihelion | 1.7705 AU |
| 1.8536 AU | |
| Eccentricity | 0.0448 |
| 2.52 yr (922 days) | |
| 293.62° | |
| Inclination | 22.823° |
| 225.26° | |
| 340.17° | |
| Physical characteristics | |
| Dimensions | 4.828±0.094 km[4] 5.96 km (calculated)[3] |
| 2.9712 h[5] 32.9±0.1 h[6] 31.65±0.005 h[7] 5.99±0.05 h[8] 2.972±0.002 h[9] |
|
| 0.267±0.095[10] 0.4663±0.0824[4] 0.3 (assumed)[3] |
|
| B–V = 0.713 U–B = 0.255 Tholen = X X [3] |
|
| 13.05 | |
1355 Magoeba, provisional designation 1935 HE, is a bright asteroid from the inner regions of the asteroid belt, about 5 kilometers in diameter. It was discovered on 30 April 1935, by English-born, South African astronomer Cyril Jackson at the Union Observatory in Johannesburg, South Africa.[11]
The asteroid is a member of the Hungaria family, that form the innermost dense concentration of asteroids in the Solar System. It orbits the Sun at a distance of 1.8–1.9 AU once every 2 years and 6 months (922 days). Its orbit shows an eccentricity of 0.04 and is significantly tilted by 23 degrees to the plane of the ecliptic.
The body's rotation around its own axis has been measured several times at the Palmer Divide Observatory (see video in § External links) with divergent results. A more recent light-curve observation in September 2014 found a rotation period of 2.971 hours[5] significantly shorter than some previous photometric observations. The X-type asteroid has a bright geometric albedo between 0.27 and 0.47.[4] While observations at the Argentinian Lencito Complex in 2007 categorize the asteroid in the metallic M-type class,[10]:1112 bodies with an albedo above 0.30 are usually not classified as metallic M-types but rather as E or Xe subtypes.
The minor planet was named after Magoeba, a native chief of the North Transvaal in South Africa.[2]
References
- ↑ 1.0 1.1 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 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 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 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
- The Palmer Divide Observatory: Tour given by Brian Warner on YouTube (time 4:03 min.)
- 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
- 1355 Magoeba at the JPL Small-Body Database
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