Latest Space News: Earth may have at least 6 'minimoons' at any given time. Where do they come from?

Link: https://www.space.com/astronomy/earth-may-have-at-least-6-minimoons-at-any-given-time-where-do-they-come-from

Summary: "It is incredible that modern telescopic surveys have the ability to detect such small objects up to millions of kilometers away."