_Van_Biesbroeck.png) Van Biesbroeck modeled from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | A. Kopff |
| Discovery site | Heidelberg Obs. |
| Discovery date | 17 October 1906 |
| Designations | |
| (1781) Van Biesbroeck | |
Named after | George Van Biesbroeck (astronomer)[2] |
| A906 UB · 1954 SZ 1958 VP · 1969 TM2 | |
| main-belt · Vestian[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.55 yr (40,377 days) |
| Aphelion | 2.6541 AU |
| Perihelion | 2.1355 AU |
| 2.3948 AU | |
| Eccentricity | 0.1083 |
| 3.71 yr (1,354 days) | |
| 330.79° | |
| 0° 15m 57.24s / day | |
| Inclination | 6.9497° |
| 44.630° | |
| 342.83° | |
| Physical characteristics | |
| Dimensions | 8.500±0.126[4] 9 km (estimate at 0.20)[5] |
| 0.203±0.023[4] | |
| XS[3] | |
| 12.75[3] · 12.8[1] | |
1781 Van Biesbroeck (prov. designation: A906 UB) is a Vesta asteroid from the inner regions of the asteroid belt, approximately 8.5 kilometers in diameter. It was discovered on 17 October 1906, by German astronomer August Kopff at Heidelberg Observatory in southern Germany.[6] It was named after astronomer George Van Biesbroeck.[2]
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