Near-Earth object / ID: 2065803
65803 Didymos is a near-Earth object of the APO orbit class — Near-Earth asteroid orbits which cross the Earth’s orbit similar to that of 1862 Apollo. Radar and photometric estimates put it between 635m - 1.4km across. It has been followed since 2022-09-27 across 1869 recorded observations. Its next approach to Earth is 2042-Feb-28 18:54, passing at 16.901 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
0.040 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Next closest approach
Date
Relative velocity
8.64 km/s
Miss distance (lunar)
16.901 LD
Miss distance (km)
6,499,704 km
Physical characteristics
Perihelion
1.013 AU
Aphelion
2.272 AU
Orbital period
769.0 days
Inclination
3.414°
Eccentricity
0.383
Semi-major axis
1.643 AU
Est. diameter (min–max)
635m - 1.4km
Log scale · 1m – 100km
Absolute magnitude
18.1 H
Orbit class
APO
Observations used
1,869