Asteroid
Near-Earth
85839
85839 (1998 YO4)
Where is it now
- Distance from Sun
- 1.975 AU
- True anomaly
- 210.3°
- 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
- 1.653 AU
- Eccentricity
- 0.2481
- Inclination
- 9.32°
- Orbital period
- 776.6 days
- Perihelion
- 1.243 AU
- Aphelion
- 2.064 AU
- Longitude of ascending node
- 28.5°
- Argument of periapsis
- 199.69°
- Epoch · J2000
- 2461000.5
Physical properties
- Mean radius
- 0.57 km
- Rotation period
- 2.45 hours
Visual & observation
- Geometric albedo
- 0.405
- Absolute magnitude (H)
- 16.58
- Spectral type
- AMO
Discovery & classification
Near-Earth Object
Sources
- orbital elements: JPL SBDB