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Home / New Zealand

Earth set to become a two-moon planet

RNZ
20 Sep, 2024 09:06 AM2 mins to read

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By RNZ

Earth is set to become a two-moon planet for the next couple of months as a 10-metre-wide asteroid - officially known as 2024PT - will begin orbiting the planet.

University of Auckland astrophysicist Professor Nick Rattenbury told RNZ’s Afternoons that it will start doing a loop-de-loop around Earth from September 29.

“A moon is typically the term that we give to a world which is orbiting in a fairly stable orbit around a parent body, like our own Moon going around the Earth, or something like it going around Jupiter,” he said.

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“It’s going to become a satellite of Earth, like Earth’s Moon, around the Earth, starting September 29, and it’s going to hang around for just over 56 and a half days before heading on its way, being flung out again, and going back on to its orbit out to where it came from.

“So it’s not a permanent Moon. It’s visiting us for a couple of months, and then it’s going to head back out to where it came from.”

However, it will be hard to see, Professor Rattenbury said.

“This is a small chunk of rock, so you could see it but you’d need to have a good telescope.”

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