This object is/might not be natural
It may be of artificial origin and may not have formed naturally.
It may be of artificial origin and may not have formed naturally.
On 8 December 2017, the object YX205B9 was discovered with an orbital period of 21 days, on an eccentric orbit taking it from slightly beyond the geocentric satellite ring to almost twice the distance of the Moon. It was later identified as the booster stage from the Chang'e 2 mission.