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Solar
Planet

Mars

Where is it now

Distance from Sun
1.516 AU
True anomaly
92.37°
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
1.524 AU
Eccentricity
0.0934
Inclination
1.85°
Orbital period
687 days
Perihelion
1.381 AU
Aphelion
1.666 AU
Longitude of ascending node
49.56°
Argument of periapsis
286.5°
Epoch · J2000
J2000

Physical properties

Mean radius
3,390 km
Equatorial radius
3,396 km
Polar radius
3,376 km
Mass
6.417 × 10²³ kg
Density
3.934 g/cm³
Rotation period
24.62 hours
Axial tilt
25.19°
Surface gravity
3.71 m/s²
Escape velocity
5.03 km/s

Visual & observation

Geometric albedo
0.17
Bond albedo
0.25
Representative colour
#C1440E

2 moons

Phobos 11 km 0.0001 AU 7.7 hours
Deimos 6.20 km 0.0002 AU 30.3 hours

Sources