Asteroid (116) Sirona
Orbital characteristics
| Epoch 17-Dec-2020 (2459200.5 JD) | |
| Apoapsis | 3.1594 AU |
| 4.7265×108 km | |
| Periapsis | 2.3748 AU |
| 3.5527×108 km | |
| Semi-major axis | 2.7671 AU |
| 4.1396×108 km | |
| Eccentricity | 0.1417778 |
| Inclination | 3.5637 ° |
| Longitude of asc. node | 63.707 ° |
| Argument of periapsis | 94.376 ° |
| Orbital period | 1681.29 days |
| 4.603 years | |
| Avg. orbital speed | 17.81 km/s |
Physical characteristics
| Mean diameter | 71.700 km |
| Rotation period (sidereal) | 12.033 hours |
| Albedo | 0.256 |
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Links
Shape model data sources
- Ďurech et al., Asteroid models from the Lowell Photometric Database. Astronomy and Astrophysics, 2016 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.
- Sirona (Model 1) (PLY 38 KB) (OBJ 61 KB)
- Sirona (Model 2) (PLY 39 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.