Asteroid
Near-Earth
Potentially hazardous
Dionysus
3671 Dionysus (1984 KD)
Where is it now
- Distance from Sun
- 1.349 AU
- True anomaly
- 285.56°
- As of
- 29 August 2026
Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.
Orbital elements
- Semi-major axis
- 2.197 AU
- Eccentricity
- 0.544
- Inclination
- 13.53°
- Orbital period
- 3.26 years
- Perihelion
- 1.002 AU
- Aphelion
- 3.392 AU
- Longitude of ascending node
- 82.01°
- Argument of periapsis
- 204.48°
- Epoch · J2000
- 2461200.5
Physical properties
- Mean radius
- 0.75 km
- Rotation period
- 2.71 hours
Visual & observation
- Geometric albedo
- 0.16
- Absolute magnitude (H)
- 16.5
- Spectral type
- APO
Discovery & classification
Near-Earth Object
Named
Potentially Hazardous Asteroid