Asteroid (1838) Ursa
Orbital characteristics
| Epoch 17-Dec-2020 (2459200.5 JD) | |
| Apoapsis | 3.2612 AU |
| 4.8787×108 km | |
| Periapsis | 3.1669 AU |
| 4.7376×108 km | |
| Semi-major axis | 3.2140 AU |
| 4.8081×108 km | |
| Eccentricity | 0.0146639 |
| Inclination | 21.970 ° |
| Longitude of asc. node | 44.182 ° |
| Argument of periapsis | 49.071 ° |
| Orbital period | 2104.64 days |
| 5.762 years | |
| Avg. orbital speed | 16.61 km/s |
Physical characteristics
| Mean diameter | 40.054 km |
| Rotation period (sidereal) | 16.163 hours |
| Albedo | 0.057 |
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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
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.
- Ursa (Model 1) (PLY 21 KB) (OBJ 32 KB)
- Ursa (Model 2) (PLY 21 KB) (OBJ 33 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.