Asteroid
Near-Earth
16816
16816 (1997 UF9)
Where is it now
- Distance from Sun
- 2.143 AU
- True anomaly
- 161.38°
- 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
- 1.443 AU
- Eccentricity
- 0.6037
- Inclination
- 25.92°
- Orbital period
- 632.8 days
- Perihelion
- 0.572 AU
- Aphelion
- 2.313 AU
- Longitude of ascending node
- 37.14°
- Argument of periapsis
- 158°
- Epoch · J2000
- 2461000.5
Physical properties
- Rotation period
- 2.45 hours
Visual & observation
- Absolute magnitude (H)
- 16.24
- Spectral type
- APO
Discovery & classification
Near-Earth Object
Sources
- orbital elements: JPL SBDB