Asteroid
Near-Earth
143381
143381 (2003 BC21)
Where is it now
- Distance from Sun
- 3.136 AU
- True anomaly
- 220.56°
- 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
- 2.596 AU
- Eccentricity
- 0.5106
- Inclination
- 5.47°
- Orbital period
- 4.18 years
- Perihelion
- 1.27 AU
- Aphelion
- 3.922 AU
- Longitude of ascending node
- 292.1°
- Argument of periapsis
- 114.11°
- Epoch · J2000
- 2461000.5
Physical properties
- Rotation period
- 5.07 hours
Visual & observation
- Absolute magnitude (H)
- 16.21
- Spectral type
- AMO
Discovery & classification
Near-Earth Object
Sources
- orbital elements: JPL SBDB