Asteroid (24) Themis
Orbital characteristics
Epoch 1-Jul-2021 (2459396.5 JD) | |
Apoapsis | 3.5265 AU |
5.2756×108 km | |
Periapsis | 2.7501 AU |
4.1142×108 km | |
Semi-major axis | 3.1383 AU |
4.6949×108 km | |
Eccentricity | 0.1236923 |
Inclination | 0.7516 ° |
Longitude of asc. node | 35.917 ° |
Argument of periapsis | 107.35 ° |
Orbital period | 2030.70 days |
5.560 years | |
Avg. orbital speed | 16.75 km/s |
Physical characteristics
Mean diameter | 198.00 km |
Rotation period (sidereal) | 8.3742 hours |
Albedo | 0.067 |
Textures:
Solid Gray
Grid
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Links
Shape model data sources
- Hanuš et al., New and updated convex shape models of asteroids based on optical data from a large collaboration network. Astronomy and Astrophysics, 2016 link
- Viikinkoski et al., Adaptive optics and lightcurve data of asteroids: twenty shape models and information content analysis. Astronomy & Astrophysics 607, A117, 2017 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.
- Themis (Model 1) (PLY 39 KB) (OBJ 61 KB)
- Themis (Model 2) (PLY 38 KB) (OBJ 61 KB)
- Themis (Viikinkoski) (PLY 16 KB) (OBJ 35 KB)
- Themis (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.