Asteroid (757) Portlandia
Orbital characteristics
| Epoch 17-Dec-2020 (2459200.5 JD) | |
| Apoapsis | 2.6324 AU |
| 3.938×108 km | |
| Periapsis | 2.1140 AU |
| 3.1625×108 km | |
| Semi-major axis | 2.3732 AU |
| 3.5502×108 km | |
| Eccentricity | 0.1092265 |
| Inclination | 8.1680 ° |
| Longitude of asc. node | 22.497 ° |
| Argument of periapsis | 43.773 ° |
| Orbital period | 1335.35 days |
| 3.656 years | |
| Avg. orbital speed | 19.28 km/s |
Physical characteristics
| Mean diameter | 32.894 km |
| Rotation period (sidereal) | 6.5811 hours |
| Albedo | 0.217 |
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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.
- Portlandia (Model 1) (PLY 38 KB) (OBJ 60 KB)
- Portlandia (Model 2) (PLY 38 KB) (OBJ 62 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.