Near-Earth object / ID: 2139622
139622 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 540m - 1.2km across. It has been followed since 2001-08-22 across 1214 recorded observations. Its next approach to Earth is 2045-Dec-17 19:51, passing at 11.775 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
0.011 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Next closest approach
Date
Relative velocity
7.54 km/s
Miss distance (lunar)
11.775 LD
Miss distance (km)
4,528,499 km
Physical characteristics
Perihelion
0.980 AU
Aphelion
1.861 AU
Orbital period
618.4 days
Inclination
9.339°
Eccentricity
0.310
Semi-major axis
1.421 AU
Est. diameter (min–max)
540m - 1.2km
Log scale · 1m – 100km
Absolute magnitude
18.5 H
Orbit class
APO
Observations used
1,214