Near-Earth object / ID: 2173561
173561 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 566m - 1.3km across. It has been followed since 2000-12-01 across 1376 recorded observations. Its next approach to Earth is 2066-Aug-16 18:20, passing at 43.829 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
0.019 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Next closest approach
Date
Relative velocity
15.48 km/s
Miss distance (lunar)
43.829 LD
Miss distance (km)
16,855,181 km
Physical characteristics
Perihelion
0.998 AU
Aphelion
1.898 AU
Orbital period
636.4 days
Inclination
28.002°
Eccentricity
0.311
Semi-major axis
1.448 AU
Est. diameter (min–max)
566m - 1.3km
Log scale · 1m – 100km
Absolute magnitude
18.4 H
Orbit class
APO
Observations used
1,376