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Asteroid 2025 TF flew just 420 km (260 miles) above Antarctica, second-closest flyby on record

A newly-discovered asteroid designated 2025 TF made an extremely close approach to Earth at 00:49 UTC on October 1, 2025, reaching a nominal distance of 0.02 LD (0.00005 AU / 6 790 km / 4 220 miles) from Earth’s center -- equivalent to about 419 km (260 miles) above the surface over Antarctica. At this distance, it is now classified as the second-closest asteroid flyby ever recorded.

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Asteroid 2024 YR4 triggers planetary defense procedures

A newly discovered asteroid designated 2024 YR4 has activated global planetary defense protocols after initial observations indicated a small but notable chance of impact in seven years. International monitoring networks have begun refining its trajectory, while space agencies evaluate potential response strategies, including possible deflection measures.

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