Asteroid (121) Hermione
Orbital characteristics
| Epoch 1-Jul-2021 (2459396.5 JD) | |
| Apoapsis | 3.8975 AU |
| 5.8306×108 km | |
| Periapsis | 3.0178 AU |
| 4.5146×108 km | |
| Semi-major axis | 3.4577 AU |
| 5.1726×108 km | |
| Eccentricity | 0.1272119 |
| Inclination | 7.5650 ° |
| Longitude of asc. node | 72.917 ° |
| Argument of periapsis | 296.74 ° |
| Orbital period | 2348.42 days |
| 6.430 years | |
| Avg. orbital speed | 15.95 km/s |
Physical characteristics
| Mean diameter | 209.00 km |
| Mass | 4.701×1018 kg |
| Avg. density | 0.983 g/cm3 |
| Equatorial surface gravity | 0.029 m/s2 |
| 0.003 g | |
| Escape velocity | 0.077 km/s |
| Rotation period (sidereal) | 5.5509 hours |
| Albedo | 0.048 |
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Links
Shape model data sources
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.
- Hermione (Convex) (PLY 38 KB) (OBJ 61 KB)
- Hermione (Nonconvex) (PLY 10 KB) (OBJ 16 KB)
- Hermione (Viikinkoski) (PLY 16 KB) (OBJ 35 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.