Near-Earth object / ID: 2138971
138971 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 521m - 1.2km across. It has been followed since 2001-02-02 across 2929 recorded observations. Its next approach to Earth is 2037-Feb-11 06:23, passing at 26.099 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
0.024 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Next closest approach
Date
Relative velocity
7.59 km/s
Miss distance (lunar)
26.099 LD
Miss distance (km)
10,036,802 km
Physical characteristics
Perihelion
0.689 AU
Aphelion
1.378 AU
Orbital period
383.8 days
Inclination
7.919°
Eccentricity
0.333
Semi-major axis
1.034 AU
Est. diameter (min–max)
521m - 1.2km
Log scale · 1m – 100km
Absolute magnitude
18.5 H
Orbit class
APO
Observations used
2,929