Asteroid (253) Mathilde
Orbital characteristics
| Epoch 17-Dec-2020 (2459200.5 JD) | |
| Apoapsis | 3.3466 AU |
| 5.0064×108 km | |
| Periapsis | 1.9517 AU |
| 2.9198×108 km | |
| Semi-major axis | 2.6492 AU |
| 3.9631×108 km | |
| Eccentricity | 0.2632606 |
| Inclination | 6.7397 ° |
| Longitude of asc. node | 179.53 ° |
| Argument of periapsis | 157.74 ° |
| Orbital period | 1574.92 days |
| 4.312 years | |
| Avg. orbital speed | 17.98 km/s |
Physical characteristics
| Mean diameter | 52.800 km |
| Mass | 1.033×1017 kg |
| Avg. density | 1.340 g/cm3 |
| Equatorial surface gravity | 0.010 m/s2 |
| 0.001 g | |
| Escape velocity | 0.023 km/s |
| Rotation period (synodic) | 417.70 hours |
| Albedo | 0.044 |
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The shape model is incomplete: not all areas were viewed due to the lack of rotation. For areas not imaged, the shape model contains the mean radius value (26.5 km). This does introduce some very jagged edges in the model.
Links
Shape model data sources
Texture sources
- Stooke. P., Stooke Small Bodies Maps V2.0. MULTI-SA-MULTI-6-STOOKEMAPS-V2.0. NASA Planetary Data System, 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.
- Mathilde (NEAR) (PLY 263 KB) (OBJ 471 KB)
- Mathilde (Stooke) (PLY 94 KB) (OBJ 164 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
Textures are simple cylindrical projections with prime meridian at the middle, provided at the highest resolution available.
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Mathilde (Grayscale)
(JPEG, 2048×1024px, 65 KB)
