For 57 days, our planet will have two moons as the 2024 PT5 asteroid gets caught in Earth’s gravity and whirled around in our orbit.

The space rock will make one complete orbit of our planet between Sept. 29 and Nov. 25 before escaping Earth's gravity. Yet despite this 57-day close flyby of our planet, the asteroid will be hard to spot as it's just 33 feet (10 meters) wide.

Though the mini-moon will only be in Earth’s orbit for about two months, it’ll stay close to the planet for a few months, making its closest approach in January 2025, after which it’s expected to make a return to the planet’s orbit in 2055, according to the study.

Sadly, at just about 10 meters, the mini-moon will be extremely hard to see from Earth, but its presence will be there nonetheless for almost two months. The asteroid, which was discovered on Aug. 7 by NASA, originated from the Arjuna asteroid belt, where it will likely return once it leaves Earth’s orbit.

For about 4.5 billion years, our planet has circled the sun on a stable, rhythmic path. Each of Earth's orbits takes approximately 365.25 days to complete, defining the length of a year. But how many times has our planet made this journey since the formation of the solar system?