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S/2023 U 1
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<p>S/2023 U 1 is the smallest and faintest known <a href="/facts/Natural_satellite_of_Uranus/evfGRq7F">natural satellite of Uranus</a>, with a diameter of around 8–12 km (5–7 mi). It was discovered on 4 November 2023 by <a href="/facts/Scott_S._Sheppard/kGvbLyMw">Scott S. Sheppard</a> using the 6.5-meter <a href="/facts/Magellan_Telescope/8aRWdYgR">Magellan–Baade Telescope</a> at <a href="/facts/Las_Campanas_Observatory/6F9vgR2t">Las Campanas Observatory</a>, <a href="/facts/Chile/uEyTfEcx">Chile</a>, and later announced on 23 February 2024. It orbits Uranus in the <a href="/facts/Retrograde_orbit/1HCbwQqy">retrograde</a> direction at an average distance of about 8 million km (5 million mi) and takes almost two Earth years to complete its orbit. </p>