The Earth has captured something interesting in its gravity that will orbit our planet for a few months before it escapes and ultimately ends up in a solar orbit. The object it has captured isn't an asteroid. It's believed to be the Centaur upper stage rocket booster that helped pushed Surveyor 2 toward the moon in 1966. The object was first detected by the Pan-STARRS1 survey telescope on Maui in September.
The telescope noticed that the object followed a slightly but distinctly curved path in the sky, which was a sign of its proximity to the earth. The observed curvature is due to the observer's rotation around the Earth's axis as the planet spins. Initially, the object was believed to be an asteroid orbiting the sun and was given a standard designation by the Minor Planet Center of 2020 SO.