1720 Niels
| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 7 February 1935 |
| Designations | |
| (1720) Niels | |
Named after | Niels (discoverer's grandson) |
| 1935 CQ · 1940 WH 1951 AL · 1953 VO1 1959 RA · 1963 WE | |
| main-belt · (inner) | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 89.52 yr (32,697 days) |
| Aphelion | 2.4170 AU |
| Perihelion | 1.9593 AU |
| 2.1881 AU | |
| Eccentricity | 0.1046 |
| 3.24 yr (1,182 days) | |
| 240.21° | |
| Inclination | 0.7301° |
| 127.86° | |
| 308.86° | |
| Physical characteristics | |
| Dimensions | 6.394±0.091 6.566±0.063 km 8.18 km (calculated) |
| 9.976 h 19.2 h | |
| 0.20 (assumed) 0.2154±0.0284 0.227±0.017 | |
| LS · S | |
| 12.22±0.25 · 12.8 · 13.2 | |
1720 Niels, provisional designation 1935 CQ, is a stony asteroid from the inner regions of the asteroid belt, approximately 6.4 kilometers in diameter. It was discovered on 7 February 1935, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, and named after a grandson of the discoverer.