Back 4217 Engelhardt (كويكب) ARZ (4217) Энгельхардт CE (4217) Engelhardt German 4217 Engelhardt Esperanto (4217) Engelhardt Spanish انگلهارت ۴۲۱۷ Persian (4217) Engelhardt French 4217 Engelhardt Hungarian (4217) Էնգելհարդտ Armenian 4217 Engelhardt IO
| Discovery [1] | |
|---|---|
| Discovered by | C. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 24 January 1988 |
| Designations | |
| (4217) Engelhardt | |
Named after | Wolf von Engelhardt (German mineralogist)[2] |
| 1988 BO2 · 1944 RL 1951 RY1 · 1970 AA | |
| main-belt · Phocaea [3][4] | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 72.73 yr (26,563 days) |
| Aphelion | 2.8045 AU |
| Perihelion | 1.8246 AU |
| 2.3145 AU | |
| Eccentricity | 0.2117 |
| 3.52 yr (1,286 days) | |
| 272.23° | |
| 0° 16m 47.64s / day | |
| Inclination | 23.129° |
| 355.44° | |
| 348.79° | |
| Known satellites | 1 (P: 36.03 h)[5][a] |
| Physical characteristics | |
| Dimensions | 7.34±1.36 km[6] 8.742±0.356 km[7][8] 9.16±1.0 km[9] 9.24 km (derived)[3] |
| 3.066±0.001 h[10] 3.0661±0.0002 h[5][a] | |
| 0.2108±0.052[9] 0.231±0.046[7][8] 0.2489 (derived)[3] 0.37±0.17[6] | |
| S [3][11] | |
| 12.10±0.67[11] · 12.20[6] · 12.3[1][3] · 12.50[7][9] | |
4217 Engelhardt, provisional designation 1988 BO2, is a stony Phocean asteroid and a potentially binary system from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 24 January 1988, by American astronomer Carolyn Shoemaker at Palomar Observatory in California, and later named after German mineralogist Wolf von Engelhardt.[12]
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