Asteroid 99942 Apophis
The Historic Earth Flyby - April 13, 2029
What is Apophis?
On April 13, 2029, the asteroid named after the Egyptian god of chaos will pass just 31,600 km from Earth — closer than our satellites. Visible to the naked eye for 2 billion people, this once-in-7,500-years event marks a historic moment in human history.
Closest Approach
31,000 km from Earth
Closer than geostationary satellites
Visibility
Visible to naked eye
Observable from Europe, Africa, and Asia
Size
370 meters diameter
Approximately the size of 3 football fields
Latest Updates
Understanding Apophis's Trajectory
Learn about the complex orbital mechanics that will bring Apophis within 31,000 kilometers of Earth.
How Close Will It Get?
Apophis will pass closer to Earth than our geostationary satellites. Here's what that means for observation.
Observation Guide for 2029
Everything you need to know about observing the historic Apophis flyby, from equipment to timing.