Itokawa
25143 Itokawa (1998 SF36)
🚀 Visited by spacecraft⚠️ Potentially hazardous
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 0.33 km
- Rotation period
- 12.132 hours
- Absolute magnitude H
- 19.26 mag
- Spectral type (SMASS)
- S(IV)
Orbit
- Orbit class (JPL)
- APO — Apollo
- Semi-major axis
- 1.32 AU
- Eccentricity
- 0.28
- Inclination
- 1.62°
- Perihelion distance
- 0.953 AU
- Aphelion distance
- 1.7 AU
- Orbital period
- 556 days
- Perihelion passage
- JD 2460936.703
- Earth MOID
- 0.013 AU
Earth approach
- Potentially hazardous (PHA)
- Yes
- Near-Earth object (NEO)
- Yes
In everyday life
- About 330 m across — 0.1% of the 400 km Seoul–Busan expressway.
- One orbit takes about 556 Earth days (about 1.5 years).
- NASA JPL lists it as a potentially hazardous asteroid — its orbit comes within 1,944,772 km of Earth's (MOID 0.013 AU).
Worked out from this object's official values.