Space object profile
Mercury
Innermost planet; heavily cratered, with extreme temperature swings.
Type
planet
Parent
sun
Mass
3.301e+23 kg
Radius
2,439.7 km
Semi-major axis
0.387098 AU
Orbital period
87.969 days
Rotation period
1,407.6 h
Distance from Earth
—
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Raw metadata
Preserved for later cosmic-detail refinement.
{
"mean_density_g_cm3": 5.43
}