Comet
Hartley
103P/Hartley 2
Where is it now
- Distance from Sun
- 5.834 AU
- True anomaly
- 174.9°
- 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
- 3.476 AU
- Eccentricity
- 0.6936
- Inclination
- 13.6°
- Orbital period
- 6.48 years
- Perihelion
- 1.065 AU
- Aphelion
- 5.886 AU
- Longitude of ascending node
- 219.74°
- Argument of periapsis
- 181.32°
- Epoch · J2000
- JD 2457863.95798 (perihelion)
Visual & observation
- Absolute magnitude (H)
- 16
- Spectral type
- JFc
Sources
- orbital elements: JPL SBDB (comets)