`r = (v*T)/(2*pi) `

0.159154943091895

The Radius from Speed and Period calculator computes the orbital radius based on the speed and period.

INSTRUCTIONS: Choose units and enter the following:

• (V) This is the orbital speed.
• (T) This is the orbital period.

Orbital Radius (r): The calculator returns the radius in kilometers.  However, this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

The formula for the orbital radius from speed and period is:

           r = (V•T)/(2π)

where:

• r = Orbital Radius
• V = Orbital Velocity
• T = Orbital Period

Astronomy Calculators

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