Asteroid (685) Hermia
Orbital characteristics
| Epoch 1-Jul-2021 (2459396.5 JD) | |
| Apoapsis | 2.6753 AU |
| 4.0022×108 km | |
| Periapsis | 1.7976 AU |
| 2.6892×108 km | |
| Semi-major axis | 2.2364 AU |
| 3.3457×108 km | |
| Eccentricity | 0.1962247 |
| Inclination | 3.6460 ° |
| Longitude of asc. node | 235.19 ° |
| Argument of periapsis | 80.773 ° |
| Orbital period | 1221.61 days |
| 3.345 years | |
| Avg. orbital speed | 19.72 km/s |
Physical characteristics
| Mean diameter | 10.950 km |
| Rotation period (sidereal) | 50.387 hours |
| Albedo | 0.281 |
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Links
Shape model data sources
- Hanuš et al., A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method. Astronomy and Astrophysics 530, A134, 2011 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.
- Hermia (Model 1) (PLY 39 KB) (OBJ 61 KB)
- Hermia (Model 2) (PLY 38 KB) (OBJ 61 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.