Discovery [1] | |
---|---|
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)[2] |
1989 SJ · 1978 VY9 1985 QB4 | |
main-belt · Nysa [3] | |
Orbital characteristics [1] | |
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)[3] 6.000±0.496 km[4][5] |
4.085±0.001 h[6] | |
0.112±0.021[4][5] 0.21 (assumed)[3] | |
S [3] | |
14.1[4] · 14.3[1][3] · 14.31±0.27[7] | |
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.[8] The asteroid was named for the Japanese city of Akō.[2]
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