Asteroid
Near-Earth
209924
209924 (2005 WS55)
Where is it now
- Distance from Sun
- 1.143 AU
- True anomaly
- 25.01°
- 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
- 2.03 AU
- Eccentricity
- 0.4535
- Inclination
- 23.77°
- Orbital period
- 2.89 years
- Perihelion
- 1.109 AU
- Aphelion
- 2.95 AU
- Longitude of ascending node
- 283.54°
- Argument of periapsis
- 203.35°
- Epoch · J2000
- 2461000.5
Physical properties
- Mean radius
- 0.93 km
- Rotation period
- 2.73 hours
Visual & observation
- Geometric albedo
- 0.185
- Absolute magnitude (H)
- 16.29
- Spectral type
- AMO
Discovery & classification
Near-Earth Object
Sources
- orbital elements: JPL SBDB