Non-exhaustive list of artificial objects that have reached the surface of 25143 Itokawa, which is an Apollo-class asteroid orbiting the sun between Venus and Mars. This potato-shaped near-Earth object measures approximately 330 meters in diameter and is potentially hazardous.
Itokawa was visited by the JAXA sample-return mission Hayabusa in November 2005.
Estimated number of artificial objects: 4
Estimated total mass: 0.6 kg.
| COSPAR ID | name | type | mission | quantity on surface | mass (kg) | status | date/epoch (UTC) |
|---|---|---|---|---|---|---|---|
| 2003-019A | HAYABUSA MARKER 2 | Target marker | HAYABUSA (MUSES C) | 1 | 0.3 | deployed on the surface | November 9, 2005 |
| 2003-019A | HAYABUSA MARKER 3 | Target marker with aluminum sheet bearing 880,000 signatures | HAYABUSA (MUSES C) | 1 | 0.3 | deployed on the surface | November 19, 2005 |
| 2003-019A | SAMPLING PROJECTILES? | Tantalum bullet | HAYABUSA (MUSES C) | 2? | 0.01 | fired, impact? | November 25, 2005 |