Centaur
2009 UN197
(2009 UN197)
Where is it now
- Distance from Sun
- 4.778 AU
- True anomaly
- 84.78°
- 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
- 6.444 AU
- Eccentricity
- 0.4759
- Inclination
- 4.67°
- Orbital period
- 16.36 years
- Perihelion
- 3.378 AU
- Aphelion
- 9.511 AU
- Longitude of ascending node
- 62.99°
- Argument of periapsis
- 243.72°
- Epoch · J2000
- 2461000.5
Visual & observation
- Absolute magnitude (H)
- 15.42
- Spectral type
- CEN
Discovery & classification
Centaur
Sources
- orbital elements: JPL SBDB