2090 Mizuho
| Discovery | |
|---|---|
| Discovered by | T. Urata |
| Discovery site | Yakiimo Stn. |
| Discovery date | 12 March 1978 |
| Designations | |
| (2090) Mizuho | |
Named after | Mizuho Urata (daughter of discoverer) |
| 1978 EA · 1937 RE 1942 PG · 1951 EH 1952 HA4 · 1953 RT 1953 TP · 1959 VD 1964 TE · 1970 WV 1978 EJ | |
| main-belt · (outer) | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 66.14 yr (24,157 days) |
| Aphelion | 3.4819 AU |
| Perihelion | 2.6635 AU |
| 3.0727 AU | |
| Eccentricity | 0.1332 |
| 5.39 yr (1,967 days) | |
| 337.47° | |
| 0° 10m 58.8s / day | |
| Inclination | 11.814° |
| 339.85° | |
| 341.20° | |
| Physical characteristics | |
| Dimensions | 17.991±0.141 18.185±0.117 km 18.92±0.79 km 35.28 km (calculated) |
| 5.47±0.01 h | |
| 0.057 (assumed) 0.207±0.019 0.2154±0.0435 0.219±0.029 | |
| Tholen = S · S B–V = 0.871 U–B = 0.499 | |
| 10.99 | |
2090 Mizuho, provisional designation 1978 EA, is a stony asteroid from the outer region of the asteroid belt, approximately 18 kilometers in diameter.
The asteroid was discovered on 12 March 1978, by Japanese astronomer Takeshi Urata at the JCPM Yakiimo Station in Shimizu, Japan, who named it after his daughter, Mizuho Urata.