Near-Earth object / ID: 2012923
12923 Zephyr 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 1.8km - 4.1km across. It has been followed since 1955-04-21 across 3011 recorded observations. Its next approach to Earth is 2032-Sep-22 21:13, passing at 72.361 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
0.020 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Next closest approach
Date
Relative velocity
13.79 km/s
Miss distance (lunar)
72.361 LD
Miss distance (km)
27,827,974 km
Physical characteristics
Perihelion
0.994 AU
Aphelion
2.929 AU
Orbital period
1003.6 days
Inclination
5.312°
Eccentricity
0.493
Semi-major axis
1.962 AU
Est. diameter (min–max)
1.8km - 4.1km
Log scale · 1m – 100km
Absolute magnitude
15.8 H
Orbit class
APO
Observations used
3,011