What are the closest asteroid flybys ever recorded?
As of September 2026, the closest known asteroid flyby came on October 30, 2025, when 2025 UC11 passed about 228 km above Earth, lower than the International Space Station orbits. All 15 here were small rocks, roughly 1 to 10 meters across, and all passed since 2011, because only modern surveys can spot rocks that small. JPL measures from Earth's center, so the chart subtracts Earth's average radius (6,371 km); asteroids that hit Earth aren't counted.
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Source and date
- Data as of
- Published
The data
| Asteroid and date of its flyby | Kilometers above Earth's surface |
|---|---|
| 2025 UC11 (Oct 30, 2025) | 228 |
| 2020 VT4 (Nov 13, 2020) | 375 |
| 2025 TF (Oct 1, 2025) | 409 |
| 2024 XA (Dec 1, 2024) | 1,355 |
| 2024 LH1 (Jun 6, 2024) | 1,727 |
| 2024 UG9 (Oct 30, 2024) | 2,479 |
| 2020 QG (Aug 16, 2020) | 2,946 |
| 2021 UA1 (Oct 25, 2021) | 3,056 |
| 2025 BP6 (Jan 26, 2025) | 3,341 |
| 2023 BU (Jan 27, 2023) | 3,596 |
| 2023 RS (Sep 7, 2023) | 3,990 |
| 2025 OS (Jul 19, 2025) | 4,087 |
| 2025 TQ2 (Oct 2, 2025) | 4,868 |
| 2011 CQ1 (Feb 4, 2011) | 5,481 |
| 2025 UW107 (Oct 19, 2025) | 5,910 |