25143 Itokawa
| 25143 Itokawa | |
|---|---|
| |
| 25143 Itokawa in Orbiter | |
| Designation | |
| Name | 25143 Itokawa |
| Reference body | Sun |
| Number of satellites | 0 |
| Planetary mean orbits | |
| Epoch | 2005.7453798768 |
| Semimajor axis (a) | 198046136569.879 km (1.32385665420968 AU) |
| Eccentricity (e) | 0.280122478810222 |
| Inclination (i) | 0.0283138805752587 radian (1.62226585859977°) |
| Longitude of the ascending node (LAN, ☊) | 1.20592765142946 radian 69.0945648250315° |
| Longitude of periapsis (ϖ) | 4.04659634268755 radian 231.852891829071° |
| Mean longitude (L) | 9.67227318273871 radian 554.180431668496° |
| Rotational Elements | |
| Sidereal Rotation Period | 43675.2 seconds (12.132 hours) |
| Sidereal Rotation Offset | 0 |
| Obliquity | 0.1 radians 0° |
| Selected physical parameters | |
| Mean radius | 45000 m |
| Mass | 9.5×1010 kg |
| Equatorial gravity | 0.000000003 m/s2 |
| Escape velocity | 1.678×10-5 m/s |
| Gravity at surface | Itokawa 0% Sun 100% |
| Note | *Elements given are from Itokawa.cfg (Asteroid 3D.zip) |
25143 Itokawa is a Near-Earth object discovered in 1998 by LINEAR project and named for the Japanese rocket engineer Hideo Itokawa. It was visited by the Hayabusa spacecraft in September 2005.
Itokawa in Orbiter[edit]
Itokawa is a Near-Earth object released by T1234 in the add-on 3D Asteroids in November 2014. Modeled as a 45 km body in an eccentric orbit of .28 with a Semimajor axis of about 1.3 AU, it is considerably larger than the actual Itokawa which is about 330 meters average diameter.
The hard landing surface is very much below the visual surface. The config file gives the radius as 45 km, 90 km diameter, the visual surface is more than 200 km from the center at the ends, and about 30 km or so at the waist. It is modeled at a elongated object with a rough surface.
| Add-on | Source | Version | Author | Type | Release Date | Compatibility | Wiki article |
|---|---|---|---|---|---|---|---|
| 3D Asteroids | O-F Resources | 2014-11-06 | T1234 | Scenery | 6 November 2014 | all versions | |
See also[edit]
Gallery[edit]
25143 Itokawa from Asteroid 3D.zip in Orbiter 2016 with D3D9 
25143 Itokawa imaged by the Hayabusa spacecraft in September 2005 
Animation of the orbit of 25143 Itokawa
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