Astronomers spot asteroid that may be heading for the earth
1 month, 2 weeks ago

Astronomers spot asteroid that may be heading for the earth

The Hindu  

On 27 December last year, astronomers using the ATLAS survey telescope in Chile discovered a small asteroid moving away from Earth. There is far more tiny debris out there than larger chunks – so impacts from objects that could imperil life on Earth’s surface are much less frequent. At present, our best models of the asteroid’s motion have an uncertainty of around 100,000 kilometres in its position at the time it would be closest to Earth. With every new observation of 2024 YR4, astronomers’ knowledge of its orbit improves slightly – which is why the collision likelihoods you might see quoted online keep changing. Fortunately, the asteroid will make another close approach to the Earth in December 2028 – passing around 8 million kilometres from our planet.

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