Known Space -- Sol -- | Mars |
Fourth out from the Sun is Mars, the Red Planet. Mars is the planet of failed promises. It has ice bordering on the liquid state, and oxygen in abundance. However, Mars just isn't quite big enough to retain a proper atmosphere and the oxygen is tied up in iron oxides that give the planet its red color ... it is a planet of rust.
Though smaller than the Earth, its surface area is similar to that of Earth's land area. Features include:
Orbital Distance: 1.381 AU - 1.666 AU (average 1.524 AU) Eccentricity: 0.007 Local Year: 686.980 days Orbital Velocity: 24.10 km/s (average) Inclination: 1.850° Local Day: 1.029 day (24h 37m 22.6s) Axial Tilt: 23.4983° Diameter: 6,794 km Composition: Iron and silicates Density: 3.94 g/cm3 Mass: 6.39 x 1017 tonnes (0.107 earths) Gravity: 0.380 G Escape Velocity: 5.03 km/s Area: 145.011 million km2 Surface Material: Basaltic dust and rock Atmosphere: Thin CO2 Pressure: 0.01 atm Albedo: 0.16 Temperature: -23°C |
Satellite Distance Month Day Diameter Phobos 9,270 km 0.32 d 0.32 d 0.002 Deimos 23,400 km 1.26 d 1.26 d 0.001 |