Asteroid (25143) Itokawa
Orbital characteristics
| Epoch 1-Jul-2021 (2459396.5 JD) | |
| Apoapsis | 1.6951 AU |
| 2.5358×108 km | |
| Periapsis | 0.9533 AU |
| 1.4261×108 km | |
| Semi-major axis | 1.3242 AU |
| 1.981×108 km | |
| Eccentricity | 0.2800889 |
| Inclination | 1.6212 ° |
| Longitude of asc. node | 69.077 ° |
| Argument of periapsis | 162.82 ° |
| Orbital period | 556.581 days |
| 1.524 years | |
| Avg. orbital speed | 25.37 km/s |
Physical characteristics
| Mean diameter | 0.3300 km |
| Extent | 0.535x0.294x0.209 km |
| Mass | 3.147×1010 kg |
| Avg. density | 1.673 g/cm3 |
| Rotation period (sidereal) | 12.132 hours |
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Links
- Wikipedia article on Itokawa
- Wikipedia article on Hayabusa mission
- JPL Small-Body database
- IAU Minor Planet Center
Shape model data sources
- NASA/JPL link
- Gaskell, R., Saito, J., Ishiguro, M., Kubota, T., Hashimoto, T., Hirata, N., Abe, S., Barnouin-Jha, O., and Scheeres, D., Gaskell Itokawa Shape Model V1.0. HAY-A-AMICA-5-ITOKAWASHAPE-V1.0. NASA Planetary Data System, 2008 link
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.
- Itokawa (Radar) (PLY 69 KB) (OBJ 116 KB)
- Itokawa (Hayabusa, 50k poly) (PLY 922 KB) (OBJ 1.7 MB)
- Itokawa (Hayabusa, 200k poly) (PLY 3.6 MB) (OBJ 6.9 MB)
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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Itokawa (Grayscale)
(JPEG, 7200×3600px, 1.8 MB)
