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.

Itokawa in Orbiter

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, anywhere from about 30 km to 100 km below. It is modeled at a elongated object with a rough surface.

See also

25143 Itokawa at Wikipedia

Gallery

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  25143 Itokawa from Asteroid 3D.zip in Orbiter 2016 with D3D9
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  25143 Itokawa imaged by the Hayabusa spacecraft in September 2005
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  Animation of the orbit of 25143 Itokawa