Compare Worlds
Put any objects side by side, with sizes drawn to true relative scale.
Apophis
Earth
Disc areas drawn to true relative diameter. Objects with no defined radius (spacecraft, nebulae) are omitted from the picture.
| Property | Apophis | Earth |
|---|---|---|
| Type | Asteroid | Planet |
| Radius | 0 km | 6,371 km |
| Surface gravity | — | 9.81 m/s² |
| Day (rotation) | — | 23.9 h |
| Year (orbit) | 323.6 days | 365.2 days |
| Distance | Varies along its Earth-crossing orbit; on April 13, 2029 it… | You are here — 149.6 million km from the Sun |
| In one line | In 2029 this asteroid will shave past Earth, closer than our TV satellites. | The only place in the universe where life is confirmed to exist. We call it home. |
“—” means the property doesn’t apply or isn’t defined for that object. Full sourced figures live on each object’s own page.