Hannah has information about an object in circular orbit around Earth.

mEarth = 6.0 × 1024 kg

G = 6.67 × 10–11 StartFraction m Superscript 3 Baseline over kilograms times s Superscript 2 Baseline EndFraction.

What additional information does Hannah need in order to calculate the tangential speed of the orbiting object?

the mass of the orbiting object
the distance of the orbiting object to Earth
the orbital period of Earth
the radius of Earth