4797 Ako
| Discovery | |
|---|---|
| Discovered by | T. Nomura K. Kawanishi |
| Discovery site | Minami-Oda Obs. (374) |
| Discovery date | 30 September 1989 |
| Designations | |
| (4797) Ako | |
Named after | Akō, Hyōgo (Japanese city) |
| 1989 SJ · 1978 VY9 1985 QB4 | |
| main-belt · Nysa | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 38.49 yr (14,057 days) |
| Aphelion | 2.8553 AU |
| Perihelion | 1.9714 AU |
| 2.4133 AU | |
| Eccentricity | 0.1831 |
| 3.75 yr (1,369 days) | |
| 146.42° | |
| 0° 15m 46.44s / day | |
| Inclination | 1.8108° |
| 320.82° | |
| 78.111° | |
| Physical characteristics | |
| Dimensions | 4.00 km (calculated) 6.000±0.496 km |
| 4.085±0.001 h | |
| 0.112±0.021 0.21 (assumed) | |
| S | |
| 14.1 · 14.3 · 14.31±0.27 | |
4797 Ako, provisional designation 1989 SJ, is a stony Nysian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 30 September 1989, by the Japanese astronomers Toshiro Nomura and Kōyō Kawanishi at the Minami-Oda Observatory (374), Japan. The asteroid was named for the Japanese city of Akō.