Mars FAQ

Mars is the planet most similar to Earth in our solar system. It's day is slightly longer and it's surface area is about the same as the all the continents of Earth. The gravity is only a bit over a third of Earths and the atmosphere is very thin, only about 1% that of Earth. Some have described it as like Antartica, only without air! From the surface, the sky appears a butterscotch color during the day and varying shades of pink during sunrise and sunset.

Current Position: Click to view
Historical Timeline: Click to view

Table of Data for the Planet Mars

Orbital data
Semimajor axis 227,940,000 km (1.52366 a.u.)
Eccentricity 0.0934
Inclination 1.8504°
Longitude of ascending node 49.59°
Longitude of perihelion 335.94°
Mean orbital velocity 24.13 km/sec
Mean synodic period 779.94 days
Mean sidereal motion 0.5204°/day
 

 

Physical elements
Axial inclination 25.19°
Length of sidereal day 24 hr, 37 min, 22.66 sec
Mean orbital period 686.98 Earth days
  669.60 Martian solar days
Diameter 6,779.84 kilometers
Polar compression 0.006
Surface area (Earth = 1) 0.2825
Volume (Earth = 1) 0.1504
Mass (Earth = 1) 0.1074
Density (water = 1) 3.93
Mean escape velocity 5.027 km/sec

 

Moons
Mars has 2 small moons
- Phobos 24 hr, 37 min, 22.66 sec
- Deimos 24 hr, 37 min, 22.66 sec

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Mars: Day 630 Time 21:21

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