5171 Augustesen
| Discovery | |
|---|---|
| Discovered by | P. Jensen |
| Discovery site | Brorfelde Obs. |
| Discovery date | 25 September 1987 |
| Designations | |
| (5171) Augustesen | |
Named after | Karl Augustesen (Danish astronomer) |
| 1987 SQ3 · 1953 RP 1953 RP1 · 1989 CH8 | |
| main-belt · (inner) background · Vestian | |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 64.15 yr (23,430 d) |
| Aphelion | 2.7460 AU |
| Perihelion | 2.1036 AU |
| 2.4248 AU | |
| Eccentricity | 0.1325 |
| 3.78 yr (1,379 d) | |
| 14.269° | |
| 0° 15m 39.6s / day | |
| Inclination | 7.0844° |
| 322.10° | |
| 45.866° | |
| Physical characteristics | |
| 6.445±0.074 km 6.81 km (calculated) 9.02±2.21 km 9.41±0.33 km 9.73±2.59 km | |
| 19.2±0.1 h (poor) 480±10 h | |
| 0.08±0.05 0.10±0.06 0.108±0.008 0.20 (assumed) 0.245±0.034 | |
| X · S | |
| 13.10 · 13.20 13.3 · 13.52 13.75±0.50 | |
5171 Augustesen (provisional designation 1987 SQ3) is a background asteroid and slow rotator from the inner regions of the asteroid belt, approximately 8 kilometers (5 miles) in diameter. It was discovered on 25 September 1987, by Danish astronomer Poul Jensen at the Brorfelde Observatory in Denmark. The suspected tumbler and presumed Vestian asteroid has an exceptionally slow rotation period of 480 hours and possibly an elongated shape. It was named after Danish astronomer Karl Augustesen.