Back 4951 Iwamoto (كويكب) ARZ (4951) Ивамото CE (4951) Iwamoto German 4951 Iwamoto Esperanto (4951) Iwamoto Spanish یواموتو ۴۹۵۱ Persian (4951) Iwamoto French 4951 Iwamoto Hungarian (4951) Իվամոտո Armenian 4951 Iwamoto Italian
| Discovery [1] | |
|---|---|
| Discovered by | Y. Mizuno T. Furuta |
| Discovery site | Kani Obs. (403) |
| Discovery date | 21 January 1990 |
| Designations | |
| (4951) Iwamoto | |
Named after | Masayuki Iwamoto (Japanese astronomer)[2] |
| 1990 BM · 1931 UQ 1985 QN6 · 1985 RH5 1989 WS3 | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.45 yr (31,210 days) |
| Aphelion | 2.6318 AU |
| Perihelion | 1.8824 AU |
| 2.2571 AU | |
| Eccentricity | 0.1660 |
| 3.39 yr (1,239 days) | |
| 79.093° | |
| 0° 17m 26.52s / day | |
| Inclination | 7.5269° |
| 101.08° | |
| 339.95° | |
| Known satellites | 1[4][a] (≥ 0.76 Ds/Dp; P: 118 h) |
| Physical characteristics | |
| Dimensions | 4.39±0.02 km[4] 5.192±0.043 km[5] 5.515±0.033 km[6] 5.528 km (revised WISE)[7] 5.53 km (taken)[3] |
| 118 h[8] 118.0±0.2 h[b] | |
| 0.1844 (revised WISE)[7] 0.1859±0.0324[6] 0.218±0.038[5] | |
| SMASS = S [1] · S [3] V–R = 0.480±0.030[b] | |
| 13.3[1] · 13.74±0.06[3][7][b] · 13.74[6] · 14.01±1.40[9] | |
4951 Iwamoto, provisional designation 1990 BM, is a stony, synchronous binary[a] asteroid and slow rotator from the inner regions of the asteroid belt, approximately 5.5 kilometers in diameter. It was discovered on 21 January 1990, by Japanese astronomers Yoshikane Mizuno and Toshimasa Furuta at Kani Observatory (403) in Japan.[10]
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