Asteroid
A near-Earth asteroid that will pass closer to Earth than some satellites in 2029.
| Type | Asteroid |
|---|---|
| Distance from the Sun | 0.92 AU |
| Diameter | 0 km |
| Mass | 6.10 × 10¹⁰ kg |
| Temperature | -3°C |
| Orbital period | 324 days |
| Rotation period | 30.6 hours |
| Apparent magnitude | 21 |
| Redshift | 0 |
| Discovered | 2004 |
Asteroids are rocky leftovers from the solar system's formation, most of them confined to the belt between Mars and Jupiter where Jupiter's gravity kept them from ever assembling into a planet.
At 0 km across, Apophis is less than a thousandth of the diameter of Earth.
Its mass is less than a thousandth of the mass of Earth.
It keeps an average distance of 0.92 AU from the Sun, so sunlight takes 8 minutes to reach it.
A single orbit takes 324 days.
An average temperature of 270 K works out at -3 degrees Celsius, colder than the 15 degrees Earth averages.
It has been on record since 2004.
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