OSIRIS-APEX and Apophis 2029 (NASA)

On April 13, 2029, asteroid Apophis passes about 20,000 miles from Earth. NASA's OSIRIS-APEX meets it in June 2029 to see how that close pass changes it.

Image: NASA.

OSIRIS-APEX: Mission Status

Cruising to Apophis; rendezvous June 2029. Dates per NASA; missions shift.

The Five W's of OSIRIS-APEX

Who

NASA, reusing the OSIRIS-REx spacecraft that returned asteroid Bennu samples.

Source: NASA, OSIRIS-APEX

What

An asteroid rendezvous mission studying how a close pass of Earth affects a stony asteroid.

Source: NASA, OSIRIS-APEX

When

Apophis passes Earth April 13, 2029; OSIRIS-APEX rendezvous in June 2029.

Source: NASA, Asteroid Apophis

Source: NASA, OSIRIS-APEX

Where

Asteroid 99942 Apophis, about 20,000 miles from Earth's surface at closest approach.

Source: NASA, Asteroid Apophis

Why

To learn how asteroids respond to gravity and what they are made of, knowledge that informs planetary defense.

Source: NASA, OSIRIS-APEX

Impact Statement

Agency solution · active

Near-Earth asteroid Apophis will safely pass about 20,000 miles (32,000 km) from Earth's surface on April 13, 2029, closer than many satellites in geosynchronous orbit. NASA says there is no risk of Apophis hitting our planet for at least 100 years. OSIRIS-APEX, the renamed OSIRIS-REx spacecraft, will rendezvous with Apophis in June 2029 to study how Earth's gravity changes its orbit, spin and surface.

Source: NASA, Asteroid Apophis

Source: NASA, OSIRIS-APEX

Knowing how a stony asteroid reacts to a close pass is exactly the kind of knowledge planetary defense needs.

For Further Information: NASA, OSIRIS-APEX

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