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Solar
Asteroid Near-Earth Potentially hazardous

Toutatis

4179 Toutatis (1989 AC)

Where is it now

Distance from Sun
4.02 AU
True anomaly
169.51°
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
2.543 AU
Eccentricity
0.6246
Inclination
0.45°
Orbital period
4.06 years
Perihelion
0.955 AU
Aphelion
4.132 AU
Longitude of ascending node
125.37°
Argument of periapsis
277.86°
Epoch · J2000
2461200.5

Physical properties

Mean radius
2.70 km
Rotation period
7.33 days

Visual & observation

Geometric albedo
0.405
Absolute magnitude (H)
15.29
Spectral type
APO

Discovery & classification

Near-Earth Object Named Potentially Hazardous Asteroid

Sources