5474 Gingasen
| Discovery | |
|---|---|
| Discovered by | T. Fujii K. Watanabe |
| Discovery site | Kitami Obs. |
| Discovery date | 3 December 1988 |
| Designations | |
| (5474) Gingasen | |
Named after | Gingasen (railroad track, Japan) |
| 1988 XE1 · 1955 YK 1971 BO2 | |
| main-belt · Vestian | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 45.58 yr (16,649 days) |
| Aphelion | 2.5439 AU |
| Perihelion | 2.2232 AU |
| 2.3836 AU | |
| Eccentricity | 0.0673 |
| 3.68 yr (1,344 days) | |
| 219.47° | |
| 0° 16m 4.08s / day | |
| Inclination | 6.1443° |
| 246.97° | |
| 256.31° | |
| Known satellites | 1 (suspected) (orbital period of 3.1095 h) |
| Physical characteristics | |
| Dimensions | 5.05±0.48 km 6.68 km (derived) |
| 2.91 h (superseded) 3.6242±0.0003 h 3.6272±0.0015 h 3.628±0.005 h | |
| 0.20 (assumed) 0.480±0.109 | |
| S | |
| 12.70±0.2 (R) · 12.79±0.10 (R) · 12.886±0.002 (R) · 12.90 · 13.1 · 13.14±0.35 · 13.28±0.112 | |
5474 Gingasen, provisional designation 1988 XE1, is a Vestian asteroid and suspected binary system from the inner regions of the asteroid belt, approximately 6 kilometers in diameter.
It was discovered on 3 December 1988, by Japanese amateur astronomers Tetsuya Fujii and Kazuro Watanabe at Kitami Observatory, Japan. It is named for the "Gingasen" railroad track in Japan.