Comet
Schwassmann-Wachmann
73P/Schwassmann-Wachmann 3-BH
Where is it now
- Distance from Sun
- 1.195 AU
- True anomaly
- 298.28°
- 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
- 2.959 AU
- Eccentricity
- 0.6824
- Inclination
- 11.29°
- Orbital period
- 5.09 years
- Perihelion
- 0.94 AU
- Aphelion
- 4.979 AU
- Longitude of ascending node
- 69.8°
- Argument of periapsis
- 198.84°
- Epoch · J2000
- JD 2453895.15261 (perihelion)
Visual & observation
- Spectral type
- JFc
Sources
- orbital elements: JPL SBDB (comets)