Near-Earth object / ID: 2003671
3671 Dionysus 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 1.3km - 3km across. It has been followed since 1984-05-27 across 1193 recorded observations. Its next approach to Earth is 2060-Oct-28 09:13, passing at 758.718 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
0.016 AU
Orbit uncertainty
0 / 9 (well determined)
Sentry monitoring
Not on the Sentry risk list
Orbital parameters
Next closest approach
Date
Relative velocity
3.27 km/s
Miss distance (lunar)
758.718 LD
Miss distance (km)
291,780,512 km
Physical characteristics
Perihelion
1.002 AU
Aphelion
3.392 AU
Orbital period
1189.1 days
Inclination
13.531°
Eccentricity
0.544
Semi-major axis
2.197 AU
Est. diameter (min–max)
1.3km - 3km
Log scale · 1m – 100km
Absolute magnitude
16.5 H
Orbit class
APO
Observations used
1,193