From 29 September to 25 November, Earth will have a new temporary ‘mini moon’.

Named 2024 PT5, the object is actually an asteroid from the Arjuna asteroid group that will be captured by Earth’s gravity for 57 days.

It’s so small and faint that it won’t be visible to the eye or even with small telescopes, but it will be visible to larger telescopes.

Astrophysicist Dr Laura Driessen, from the University of Sydney, talks through the history of mini moons and what the rare discovery means.