Asteroid
Apophis
TypeAsteroid
Mass2.7 × 10¹⁰ kg
Diameter0.37 km
Orbital Radius137.5 million km
Orbital Period323.6 days
Rotation Period30.4 hours
Known Moons0
Surface Gravity~0.00001 m/s²
AtmosphereNone
Discovered ByRoy Tucker
Discovery Year2004
About Apophis
A near-Earth asteroid that will pass within 31,000 km of Earth on April 13, 2029, visible to the naked eye. Initially had a concerning probability of Earth impact in 2029, now ruled out. Close approach will be closer than geostationary satellites. Named after the Egyptian serpent of chaos.
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