When calculating the velocity of a satellite orbiting a planet, the factor that is not needed is the mass of the satellite.
The velocity can be determined using the formula for circular orbits, which is given by:
\[ v = \sqrt{\frac{GM}{r}} \]
where:
- \( v \) is the orbital velocity,
- \( G \) is the universal gravitational constant,
- \( M \) is the mass of the planet,
- \( r \) is the orbital radius (distance from the center of the planet to the satellite).
The mass of the satellite does not affect the orbital velocity in this scenario.
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