Mars
vs
SIZE COMPARISON
Earth
Mars
Mars is 1.9x smaller than Earth
DATE OF DISCOVERY
Date object was discovered
Unknown
Unknown
DISCOVERED BY
Name of discoverer(s)
Known by the Ancients
Known by the Ancients
AVERAGE ORBIT DISTANCE
Average of minimum and maximum distances from an object to the body it orbits.
227,943,824km
141,637,725miles
2.2794382 x 108km
149,598,262km
92,956,050miles
1.4959826 x 108km
MEAN ORBIT VELOCITY
The average speed of an object over an entire orbit.
86,677km/h
53,858mph
2.4077 x 104m/s
107,218km/h
66,622mph
2.9783 x 104m/s
ORBIT ECCENTRICITY
The amount an object's orbit deviates from a perfect circle.
0.0933941
0.01671123
EQUATORIAL INCLINATION
The tilt of an objects equator in relation to the plane of the ecliptic.
25.2
23.4393 degrees
EQUATORIAL RADIUS
The distance from the center of an object to its equator.
3,389.5km
2,106.1miles
3.3895 x 103km
6,371.00km
3,958.8miles
6.3710 x 103km
EQUATORIAL CIRCUMFERENCE
The distance around an object at the equator.
21,296.9km
13,233.3miles
2.12969 x 104km
40,030.2km
24,873.6miles
4.00302 x 104km
VOLUME
The amount of space an object occupies.
163,115,609,799km3
39,133,515,914miles3
1.63116 X 1011km3
1,083,206,916,846km3
259,875,159,532miles3
1.08321 x 1012km3
DENSITY
3.934g/cm3
oz/in3
g/cm3
5.513g/cm3
oz/in3
g/cm3
MASS
641,693,000,000,000,000,000,000kg
lbs
6.4169 x 1023kg
5,972,190,000,000,000,000,000,000kg
lbs
5.9722 x 1024kg
SURFACE AREA
The outer or uppermost part of a planet, moon, asteroid, comet or other body.
144,371,391km2
55,742,106square miles
1.4437 x 108km2
510,064,472km2
196,936,994square miles
5.1006 x 108km2
SURFACE GRAVITY
The gravitational acceleration experienced at its surface at the equator.
3.71m/s2
12.2ft/s2
m/s2
9.80665m/s2
32.041ft/s2
m/s2
ESCAPE VELOCITY
The speed needed for an object to break away from the gravitational pull of a planet or moon.
18,108km/h
11,252mph
5.030 x 103m/s
40,284km/h
25,031mph
1.119 x 104m/s
EFFECTIVE TEMPERATURE
°C
°F
K
°C
°F
K
ATMOSPHERIC CONSTITUENTS
The major gases surrounding a planet in layers.
Carbon Dioxide, Nitrogen, Argon
Carbon Dioxide, Nitrogen, Argon
CO2, N2, Ar
Nitrogen, Oxygen
Nitrogen, Oxygen
N2, O2
Page Updated: May 16, 2024
