{"chart":{"slug":"closest-asteroid-flybys","title":"What are the closest asteroid flybys ever recorded?","takeaway":"As of November 2026, the closest known asteroid flyby was 2025 UC11 (Oct 30, 2025), about 228 km above Earth's surface; the International Space Station orbits about 400 km up. The 15 flybys here were by small rocks, roughly 1 to 10 meters across, and nearly all are recent, 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.","topic":"Space","chart_type":"bar","ranking":false,"x_label":"Asteroid and date of its flyby","y_label":"Kilometers above Earth's surface","unit":null,"points_count":15,"source":{"name":"NASA/JPL Center for Near Earth Object Studies (CNEOS), SBDB Close Approach Data","url":"https://cneos.jpl.nasa.gov/ca/"},"license":{"name":"Public domain (NASA data); credit NASA/JPL-Caltech CNEOS","url":"https://www.jpl.nasa.gov/jpl-image-use-policy"},"data_as_of":"2026-11-04","updated_at":"2026-11-04T17:21:15.946Z","url":"https://chart.ly/charts/closest-asteroid-flybys","api_url":"https://chart.ly/api/v1/charts/closest-asteroid-flybys","csv_url":"https://chart.ly/charts/closest-asteroid-flybys/data.csv","image_url":"https://chart.ly/charts/closest-asteroid-flybys/image.png","embed_url":"https://chart.ly/charts/closest-asteroid-flybys/embed","credit":"NASA/JPL Center for Near Earth Object Studies (CNEOS), SBDB Close Approach Data, via Chartly (https://chart.ly/charts/closest-asteroid-flybys)","credit_html":"NASA/JPL Center for Near Earth Object Studies (CNEOS), SBDB Close Approach Data, via \u003ca href=\"https://chart.ly/charts/closest-asteroid-flybys\"\u003eChartly\u003c/a\u003e","average_label":null,"zero_axis":true,"data":[{"label":"2025 UC11 (Oct 30, 2025)","value":228},{"label":"2020 VT4 (Nov 13, 2020)","value":375},{"label":"2025 TF (Oct 1, 2025)","value":409},{"label":"2026 TP128 (Oct 15, 2026)","value":1119},{"label":"2024 XA (Dec 1, 2024)","value":1355},{"label":"2024 LH1 (Jun 6, 2024)","value":1727},{"label":"2024 UG9 (Oct 30, 2024)","value":2479},{"label":"2020 QG (Aug 16, 2020)","value":2946},{"label":"2021 UA1 (Oct 25, 2021)","value":3056},{"label":"2025 BP6 (Jan 26, 2025)","value":3341},{"label":"2023 BU (Jan 27, 2023)","value":3596},{"label":"2023 RS (Sep 7, 2023)","value":3990},{"label":"2025 OS (Jul 19, 2025)","value":4087},{"label":"2025 TQ2 (Oct 2, 2025)","value":4868},{"label":"2011 CQ1 (Feb 4, 2011)","value":5481}],"annotations":[]},"docs":"https://chart.ly/developers","terms":"Free to use with credit: wherever you show or quote a chart's data, name Chartly with a link to that chart's url (each chart's credit line does both) and credit its source as its license asks.","credit":"NASA/JPL Center for Near Earth Object Studies (CNEOS), SBDB Close Approach Data, via Chartly (https://chart.ly/charts/closest-asteroid-flybys)"}