Asteroid
Near-Earth
Heracles
5143 Heracles (1991 VL)
Where is it now
- Distance from Sun
- 1.8 AU
- True anomaly
- 220.42°
- 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
- 1.835 AU
- Eccentricity
- 0.7713
- Inclination
- 8.98°
- Orbital period
- 2.49 years
- Perihelion
- 0.42 AU
- Aphelion
- 3.25 AU
- Longitude of ascending node
- 309.1°
- Argument of periapsis
- 228.21°
- Epoch · J2000
- 2461200.5
Physical properties
- Mean radius
- 2.42 km
- Rotation period
- 2.71 hours
Visual & observation
- Geometric albedo
- 0.227
- Absolute magnitude (H)
- 14.04
- Spectral type
- APO
Discovery & classification
Near-Earth Object
Named