Reference image
Object guide
Itokawa is a small, rubble-pile near-Earth asteroid visited by JAXA's Hayabusa mission; it is irregular in shape and composed of loose aggregates. 25143 Itokawa is approximately 0.32 km across.
How to observe 25143 Itokawa
25143 Itokawa is generally a challenging visual target. Use a current ephemeris, dark skies, and image stacking when its angular size or brightness is insufficient for direct detail.
Scientific context
Useful scale comparisons are 0 Earth diameters, 0 g surface gravity, 1.432 Earth years per orbit. These values are rounded from the catalogue measurements shown on this page.
- Radius
- 0.16 km
- Diameter
- 0.32 km
- Mass
- 35,100,000,000 kg
- Mean density
- 2.046 g/cm³
- Surface gravity
- 0.00004 m/s² (0 g)
- Orbital period
- 523 days (1.432 years)
0 Earth diameters0 g surface gravity1.432 Earth years per orbit
Source: NASA/JPL Small-Body Database (checked 2026-08-09). Values are rounded catalogue measurements.
Interactive orbit model
Aug 13, 2026, 22:251×
Calculated positions / separate exploration scales