Near-Earth object / ID: 2031221
31221 is a near-Earth object of the AMO orbit class — Near-Earth asteroid orbits similar to that of 1221 Amor. Radar and photometric estimates put it between 952m - 2.1km across. It has been followed since 1998-01-28 across 1389 recorded observations. It is not classified as a potentially hazardous asteroid.
Data source: NASA NeoWs API
Visualization: mesh render
Hazard analysis
PHA status
Not hazardous
Min. orbit intersection
0.292 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Close approach
No approaches to Earth on record.
Physical characteristics
Est. diameter (min–max)
952m - 2.1km
Log scale · 1m – 100km
Absolute magnitude
17.2 H
Orbit class
Perihelion
1.280 AU
Aphelion
2.166 AU
Orbital period
826.2 days
Inclination
20.219°
Eccentricity
0.257
Semi-major axis
1.723 AU
AMO
Observations used
1,389