Near-Earth object / ID: 2021277
21277 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 1.5km - 3.5km across. It has been followed since 1990-02-04 across 1023 recorded observations. Its last recorded approach to Earth was 1945-Jun-07 22:34. 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
0.313 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Last recorded approach
Date
Relative velocity
15.51 km/s
Miss distance (lunar)
13.002 LD
Miss distance (km)
5,000,364 km
Physical characteristics
Perihelion
1.141 AU
Aphelion
3.615 AU
Orbital period
1339.2 days
Inclination
20.948°
Eccentricity
0.520
Semi-major axis
2.378 AU
Est. diameter (min–max)
1.5km - 3.5km
Log scale · 1m – 100km
Absolute magnitude
16.2 H
Orbit class
AMO
Observations used
1,023