Asteroid
Near-Earth
18882
18882 (1999 YN4)
Where is it now
- Distance from Sun
- 1.295 AU
- True anomaly
- 354.65°
- 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
- 1.685 AU
- Eccentricity
- 0.2321
- Inclination
- 36.81°
- Orbital period
- 798.9 days
- Perihelion
- 1.294 AU
- Aphelion
- 2.076 AU
- Longitude of ascending node
- 291.67°
- Argument of periapsis
- 242.67°
- Epoch · J2000
- 2461000.5
Physical properties
- Rotation period
- 2.47 hours
Visual & observation
- Absolute magnitude (H)
- 16.14
- Spectral type
- AMO
Discovery & classification
Near-Earth Object
Sources
- orbital elements: JPL SBDB