vs
DATE OF DISCOVERY
Date object was discovered
DISCOVERED BY
Name of discoverer(s)
AVERAGE ORBIT DISTANCE
Average of minimum and maximum distances from an object to the body it orbits.
km
miles
km
km
miles
km
MEAN ORBIT VELOCITY
The average speed of an object over an entire orbit.
km/h
mph
m/s
km/h
mph
m/s
ORBIT ECCENTRICITY
The amount an object's orbit deviates from a perfect circle.
EQUATORIAL INCLINATION
The tilt of an objects equator in relation to the plane of the ecliptic.
EQUATORIAL RADIUS
The distance from the center of an object to its equator.
km
miles
km
km
miles
km
EQUATORIAL CIRCUMFERENCE
The distance around an object at the equator.
km
miles
km
km
miles
km
VOLUME
The amount of space an object occupies.
km3
miles3
km3
km3
miles3
km3
DENSITY
g/cm3
oz/in3
g/cm3
g/cm3
oz/in3
g/cm3
MASS
kg
lbs
kg
kg
lbs
kg
SURFACE AREA
The outer or uppermost part of a planet, moon, asteroid, comet or other body.
km2
square miles
km2
km2
square miles
km2
SURFACE GRAVITY
The gravitational acceleration experienced at its surface at the equator.
m/s2
ft/s2
m/s2
m/s2
ft/s2
m/s2
ESCAPE VELOCITY
The speed needed for an object to break away from the gravitational pull of a planet or moon.
km/h
mph
m/s
km/h
mph
m/s
EFFECTIVE TEMPERATURE
°C
°F
K
°C
°F
K
ATMOSPHERIC CONSTITUENTS
The major gases surrounding a planet in layers.
Page Updated: May 16, 2024