` = "Orbital Velocity of the Earth"`

29784.7357

The Orbital Velocity of the Earth is approximately 29,784.7357 m/s m/s.

The Math / Science

The Earth travels in a near circular orbit around the Sun.   This means that the distance the Earth travels in one year is the circumference of a circle with a radius of one astronomical unit (au).

Velocity is computed as distance divide by time, in this case:

r = 1 astronomical unit
c = 2⋅π⋅r
v =  c / (1 sidereal year)

convert v to meters per second

The formula to compute the Orbital Velocity of the Earth is:

v = ( 2⋅π⋅r) / sr

where:

• v = Orbital Velocity of the Earth
• r = mean radius of the Earth from the Sun (aka, 1 astronomical unit)
• sr = sidereal year