Comet
LONEOS
P/1999 RO28 (LONEOS)
Where is it now
- Distance from Sun
- 2.091 AU
- True anomaly
- 92.43°
- 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
- 3.527 AU
- Eccentricity
- 0.6508
- Inclination
- 8.19°
- Orbital period
- 6.62 years
- Perihelion
- 1.232 AU
- Aphelion
- 5.823 AU
- Longitude of ascending node
- 148.45°
- Argument of periapsis
- 219.86°
- Epoch · J2000
- JD 2451453.84339 (perihelion)
Visual & observation
- Absolute magnitude (H)
- 20.7
- Spectral type
- JFc
Sources
- orbital elements: JPL SBDB (comets)