Asteroid
Near-Earth
40267
40267 (1999 GJ4)
Where is it now
- Distance from Sun
- 2.165 AU
- True anomaly
- 166.39°
- 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
- 1.339 AU
- Eccentricity
- 0.8084
- Inclination
- 34.48°
- Orbital period
- 565.8 days
- Perihelion
- 0.257 AU
- Aphelion
- 2.421 AU
- Longitude of ascending node
- 148.2°
- Argument of periapsis
- 211.95°
- Epoch · J2000
- 2461000.5
Physical properties
- Mean radius
- 0.82 km
- Rotation period
- 4.96 hours
Visual & observation
- Geometric albedo
- 0.214
- Absolute magnitude (H)
- 15.54
- Spectral type
- APO
Discovery & classification
Near-Earth Object
Sources
- orbital elements: JPL SBDB