2033 Basilea
| Discovery | |
|---|---|
| Discovered by | P. Wild |
| Discovery site | Zimmerwald Obs. |
| Discovery date | 6 February 1973 |
| Designations | |
| (2033) Basilea | |
Named after | Basel (Swiss city) |
| 1973 CA · 1953 DA 1953 EY · 1955 WD 1955 XD | |
| main-belt · (inner) | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.33 yr (23,133 days) |
| Aphelion | 2.4734 AU |
| Perihelion | 1.9765 AU |
| 2.2250 AU | |
| Eccentricity | 0.1117 |
| 3.32 yr (1,212 days) | |
| 191.60° | |
| 0° 17m 49.2s / day | |
| Inclination | 8.4634° |
| 321.72° | |
| 14 November 2025 | |
| 134.56° | |
| Physical characteristics | |
| Dimensions | 5.710±0.088 km 6.25±1.51 km 6.322±0.051 km 7.82 km (calculated) |
| 6.5287±0.0002 h | |
| 0.20 (assumed) 0.29±0.13 0.3688±0.0966 0.419±0.088 | |
| S | |
| 14.9 to 18.4 | |
| 12.7 · 12.9 · 13.01±0.09 · 13.19 | |
2033 Basilea, provisional designation 1973 CA, is a stony asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 6 February 1973, by astronomer Paul Wild at the Zimmerwald Observatory near Bern, Switzerland. The asteroid was named for the Swiss city of Basel. It came to perihelion in November 2025 and opposition on 23 January 2026 at apparent magnitude 15 in the constellation of Cancer.