Near-Earth object / ID: 2138404
138404 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 352m - 787m across. It has been followed since 1982-07-20 across 1681 recorded observations. Its next approach to Earth is 2033-Jul-29 05:40, passing at 18.354 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
0.027 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Next closest approach
Date
Relative velocity
5.61 km/s
Miss distance (lunar)
18.354 LD
Miss distance (km)
7,058,308 km
Physical characteristics
Perihelion
0.776 AU
Aphelion
1.501 AU
Orbital period
443.8 days
Inclination
2.164°
Eccentricity
0.319
Semi-major axis
1.139 AU
Est. diameter (min–max)
352m - 787m
Log scale · 1m – 100km
Absolute magnitude
19.4 H
Orbit class
APO
Observations used
1,681