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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Key facts
Measure: Kilometers above Earth's surface. Written from the data below.
- 2025 UW107 (Oct 19, 2025) has the highest figure, 5,910, followed by 2011 CQ1 (Feb 4, 2011) (5,481) and 2025 TQ2 (Oct 2, 2025) (4,868).
- 2025 UC11 (Oct 30, 2025) has the lowest figure, 228, followed by 2020 VT4 (Nov 13, 2020) (375) and 2025 TF (Oct 1, 2025) (409).
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Chartly. “What are the closest asteroid flybys ever recorded?” Chart. Data: NASA/JPL Center for Near Earth Object Studies (CNEOS), SBDB Close Approach Data, https://cneos.jpl.nasa.gov/ca/ (data as of October 15, 2026). https://chart.ly/charts/closest-asteroid-flybys (accessed October 15, 2026).
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The data
Download data (CSV)The file has the numbers in this table, with the source, license and date. Please credit the source and Chartly.
| 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 |
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