Asteroid (257) Silesia
Orbital characteristics
| Epoch 1-Jul-2021 (2459396.5 JD) | |
| Apoapsis | 3.4658 AU |
| 5.1847×108 km | |
| Periapsis | 2.7693 AU |
| 4.1429×108 km | |
| Semi-major axis | 3.1175 AU |
| 4.6638×108 km | |
| Eccentricity | 0.1116978 |
| Inclination | 3.6133 ° |
| Longitude of asc. node | 34.058 ° |
| Argument of periapsis | 31.599 ° |
| Orbital period | 2010.57 days |
| 5.505 years | |
| Avg. orbital speed | 16.82 km/s |
Physical characteristics
| Mean diameter | 72.660 km |
| Rotation period (sidereal) | 15.710 hours |
| Albedo | 0.054 |
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Links
Shape model data sources
- Hanuš et al., Asteroids' physical models from combined dense and sparse photometry and scaling of the YORP effect by the observed obliquity distribution. Astronomy and Astrophysics 551, A67, 2013 link
Downloads
Models
Models are given in Stanford Triangle Format (PLY) and Alias Waveform Format (OBJ) - you can use MeshLab or any other tool to convert them to other formats.
- Silesia (Model 1) (PLY 38 KB) (OBJ 61 KB)
- Silesia (Model 2) (PLY 38 KB) (OBJ 62 KB)
Please note that the models are in planetocentric coordinate system, with Z axis passing through north pole. Actual rotational axis may differ from planetocentric poles, especially for small irregular bodies.
Surface Textures
This object does not have textures yet and is being displayed as a solid gray shape.