Credit: NASA/JPL-Caltech and NSF/AUI/GBO Public Domain — NASA Media Usage Guidelines

ASTEROID

Apophis

A Near-Earth asteroid that will pass closer than geostationary satellites on 13 April 2029.

Orbits Sun

On 13 April 2029 will pass 31,860 km from Earth's surface u2014 closer than geosynchronous satellites.
Visible to the naked eye during the 2029 flyby from the Eastern Hemisphere.
Earth impact ruled out for at least the next 100 years (after March 2021 radar campaign).
Target of NASA's OSIRIS-APEX mission, arriving shortly after the 2029 flyby.

About Apophis

99942 Apophis is a Near-Earth asteroid that will make an extraordinarily close pass to Earth on 13 April 2029 — at 31,860 km from the surface, closer than the geostationary satellite belt. It will be visible to the naked eye as a fast-moving star over Europe, Africa and western Asia. NASA’s OSIRIS-APEX spacecraft, the repurposed OSIRIS-REx bus, will rendezvous with Apophis shortly after the flyby to study how tidal interactions with Earth reshape the asteroid. Radar observations in March 2021 have ruled out any Earth impact for at least the next century.

Live · 3DSee Apophis in the Live 3D Solar SystemFly to Apophis and explore its orbit among the planets, moons & spacecraft in a full-screen interactive view.Launch 3D view

Physical Properties

Mean radius0 km

Rotation period30.56 h

Bond albedo0.23

Orbit

OrbitsSun

Semi-major axis0.922 AU

Eccentricity0.1914

Inclination3.34°

Orbital period0.886 yr

Gallery

Hand-picked mission imagery of Apophis sourced from NASA and partner archives. Click any photo for full resolution and source attribution.

Radar observations of asteroid 99942 Apophis during its March 2021 close approach. NASA/JPL-Caltech and NSF/AUI/GBO · Public Domain u2014 NASA Media Usage Guidelines

Imagery on this page is provided by the original mission teams. Full attribution terms: Image Rights & Credits.

Sources & Further Reading

Numerical values (radius, mass, orbital elements, temperatures) are drawn from NASA NSSDC Planetary Fact Sheets, JPL Horizons, and the JPL Small-Body Database. Last refreshed: 2026-06-08 01:37:02.