Asteroid (699) Hela
Orbital characteristics
| Epoch 17-Dec-2020 (2459200.5 JD) | |
| Apoapsis | 3.6831 AU |
| 5.5099×108 km | |
| Periapsis | 1.5403 AU |
| 2.3043×108 km | |
| Semi-major axis | 2.6117 AU |
| 3.9071×108 km | |
| Eccentricity | 0.4102281 |
| Inclination | 15.296 ° |
| Longitude of asc. node | 242.54 ° |
| Argument of periapsis | 91.333 ° |
| Orbital period | 1541.67 days |
| 4.221 years | |
| Avg. orbital speed | 17.63 km/s |
Physical characteristics
| Rotation period (sidereal) | 3.3962 hours |
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Links
Shape model data sources
- Marciniak et al., Photometry and models of selected main belt asteroids IX. Introducing Interactive Service for Asteroid Models (ISAM). Astronomy and Astrophysics 545, id.A131, 2012 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.
- Hela (Model 1) (PLY 59 KB) (OBJ 98 KB)
- Hela (Model 2) (PLY 38 KB) (OBJ 60 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.