Asteroid (253) Mathilde

Orbital characteristics

Epoch 16-Feb-2017 (2457800.5 JD)
Apoapsis3.3498 AU
5.0113×108 km
Periapsis1.9508 AU
2.9184×108 km
Semi-major axis2.6503 AU
3.9648×108 km
Eccentrity0.2639342
Inclination6.7433 °
Longitude of asc. node179.59 °
Argument of periapsis157.43 °
Orbital period1575.97 days
4.315 years
Avg. orbital speed17.97 km/s

Physical characteristics

Mean diameter52.800 km
Mass1.033×1017 kg
Avg. density1.340 g/cm3
Equatorial surface gravity0.010 m/s2
0.001 g
Escape velocity0.023 km/s
Rotation period (synodic)417.70 hours
Albedo0.044
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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.


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.

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.

Last Modified: 16 Apr 2017