Comet
Spacewatch
366P/Spacewatch
Where is it now
- Distance from Sun
- 3.799 AU
- True anomaly
- 123.07°
- 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
- 3.501 AU
- Eccentricity
- 0.3474
- Inclination
- 8.85°
- Orbital period
- 6.55 years
- Perihelion
- 2.285 AU
- Aphelion
- 4.717 AU
- Longitude of ascending node
- 70.8°
- Argument of periapsis
- 153.58°
- Epoch · J2000
- JD 2455931.94799 (perihelion)
Visual & observation
- Absolute magnitude (H)
- 13.1
- Spectral type
- ETc
Sources
- orbital elements: JPL SBDB (comets)