Near-Earth object / ID: 2099942
99942 Apophis is a near-Earth object of the ATE orbit class — Near-Earth asteroid orbits similar to that of 2062 Aten. Radar and photometric estimates put it between 404m - 904m across. It has been followed since 2004-03-15 across 7370 recorded observations. Its next approach to Earth is 2027-Dec-29 14:23, passing at 114.215 LD. JPL classifies it as a potentially hazardous asteroid, a label driven by its size and how close its orbit comes to ours — not by a predicted impact.
Data source: NASA NeoWs API
Visualization: mesh render
Hazard analysis
PHA status
Potentially hazardous
Min. orbit intersection
0.000 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Next closest approach
Date
Relative velocity
14.69 km/s
Miss distance (lunar)
114.215 LD
Miss distance (km)
43,923,794 km
Physical characteristics
Perihelion
0.746 AU
Aphelion
1.099 AU
Orbital period
323.6 days
Inclination
3.341°
Eccentricity
0.191
Semi-major axis
0.922 AU
Est. diameter (min–max)
404m - 904m
Log scale · 1m – 100km
Absolute magnitude
19.1 H
Orbit class
ATE
Observations used
7,370