Mars an Overview

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Mars Statistics

Mass (kg)

6.421e+23

Mass (Earth = 1)

1.0745e-01

Equatorial radius (km)

3,397.2

Equatorial radius (Earth = 1)

5.3264e-01

Mean density (gm/cm^3)

3.94

Mean distance from the Sun (km)

227,940,000

Mean distance from the Sun (Earth = 1)

1.5237

Rotational period (hours)

24.6229

Rotational period (days)

1.025957

Orbital period (days)

686.98

Mean orbital velocity (km/sec)

24.13

Orbital eccentricity

0.0934

Tilt of axis (degrees)

25.19

Orbital inclination (degrees)

1.850

Equatorial surface gravity (m/sec^2)

3.72

Equatorial escape velocity (km/sec)

5.02

Visual geometric albedo

0.15

Magnitude (Vo)

-2.01

Minimum surface temperature

-140°C

Mean surface temperature

-63°C

Maximum surface temperature

20°C

Atmospheric pressure (bars)

0.007

Atmospheric composition

Carbon Dioxide (C02)
Nitrogen (N2)
Argon (Ar)
Oxygen (O2)
Carbon Monoxide (CO)
Water (H2O)
Neon (Ne)
Krypton (Kr)
Xenon (Xe)
Ozone (O3)


95.32%
2.7%
1.6%
0.13%
0.07%
0.03%
0.00025%
0.00003%
0.000008%
0.000003%