5474 Gingasen
| Discovery [1] | |
|---|---|
| Discovered by | T. Fujii K. Watanabe |
| Discovery site | Kitami Observatory |
| Discovery date | 3 December 1988 |
| Designations | |
| MPC designation | 5474 Gingasen |
|
Named after
|
Gingasen (Milky Way) (railroad track)[2] |
| 1988 XE1 · 1955 YK 1971 BO2 |
|
| main-belt · Vestoid [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 44.25 yr (16,164 days) |
| Aphelion | 2.5455 AU |
| Perihelion | 2.2224 AU |
| 2.3839 AU | |
| Eccentricity | 0.0677 |
| 3.68 yr (1,344 days) | |
| 4.8314° | |
| Inclination | 6.1432° |
| 247.01° | |
| 256.61° | |
| Physical characteristics | |
| Dimensions | 5.05±0.48 km[4] 6.68 km (derived)[3] |
| 3.6242 h[5] 2.91 h[6] 3.628±0.005 h[7] 3.6272±0.0015 h[8] |
|
| 0.480±0.109[4] 0.20 (assumed)[3] |
|
| S [3] | |
| 13.0[1] | |
5474 Gingasen, provisional designation 1988 XE1, is a vestian binary asteroid[9] from the inner regions of the asteroid belt, about 5 kilometers in diameter. It was discovered on December 3, 1988 by Japanese amateur astronomers Tetsuya Fujii and Kazuro Watanabe at Kitami Observatory, Japan.[10]
The stony S-type asteroid is a member of the Vesta family. It orbits the Sun at a distance of 2.2–2.5 AU once every 3 years and 8 months (1,344 days). Its orbit shows an eccentricity of 0.07 and is tilted by 6 degrees to the plane of the ecliptic. It has a rotation period of 3.6 hours[8] and a high albedo of 0.48.[4]
A moon was discovered orbiting the asteroid in 2008.[9]
The minor planet was named after a railroad track in Hokkaido. Gingasen means "Milky Way". This 150-km public railroad connects the island's eastern cities. Each station along the line is named for a constellation.[10]
References
- ↑ 1.0 1.1 1.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 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.
- ↑ 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.
- ↑ 8.0 8.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 9.0 9.1 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.
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 (5001)-(10000) – Minor Planet Center
- 5474 Gingasen at the JPL Small-Body Database
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