220 Stephania
Lightcurve-based 3D-model of Stephania | |
| Discovery | |
|---|---|
| Discovered by | J. Palisa |
| Discovery site | Vienna Obs. |
| Discovery date | 19 May 1881 |
| Designations | |
| (220) Stephania | |
| Pronunciation | /stɪˈfeɪniə/ |
Named after | Princess Stéphanie (Belgian royalty) |
| A881 KA · 1925 VE 1931 FP · 1932 UA 1943 WB · 1946 MA 1950 TT4 · 1961 WB | |
| main-belt · (inner) background | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.28 yr (31,514 days) |
| Aphelion | 2.9543 AU |
| Perihelion | 1.7443 AU |
| 2.3493 AU | |
| Eccentricity | 0.2575 |
| 3.60 yr (1,315 days) | |
| 239.16° | |
| 0° 16m 25.32s / day | |
| Inclination | 7.5895° |
| 257.92° | |
| 78.480° | |
| Physical characteristics | |
| Dimensions | 31.04 km (derived) 31.12±1.5 km 31.738±0.219 km 31.96±9.77 km 32.29±0.33 km 33±2 km 35.097±0.260 km 38.46±5.77 km |
| 18.19 h 18.198 h 18.2±0.2 h 18.21 h | |
| 0.03±0.01 0.05±0.03 0.0571±0.0068 0.0607 (derived) 0.069±0.002 0.069±0.016 0.0726±0.007 0.075±0.015 | |
| Tholen = XC C · P | |
| 11.00 · 11.10 · 11.2 · 11.35 | |
220 Stephania is a dark background asteroid from the inner regions of the asteroid belt, approximately 32 km (20 mi) in diameter. It was discovered on 19 May 1881, by Austrian astronomer Johann Palisa at the Vienna Observatory. The C-type asteroid has a rotation period of 18.2 hours. It was named after Princess Stéphanie of Belgium.