The duration a mini-moon orbits Earth varies, but they are temporary celestial objects.
Based on the provided reference, mini-moons are asteroids that temporarily share Earth's orbit. They are the most likely type of asteroid to become mini-moons.
The reference doesn't specify an exact timeframe for how long a mini-moon typically orbits Earth. To provide more specific information on the duration of a mini-moon's orbit, further research beyond the provided reference would be necessary. Generally, mini-moons orbit the Earth for a relatively short amount of time, from several months to about a year or so before their trajectory takes them away from Earth.
