C/2025 R3 (PanSTARRS) is a hyperbolic comet originating from the Oort Cloud, discovered on 8 September 2025. The comet reached perihelion on 19 April 2026. Around perihelion the low elevation above the horizon limits practical observing from northern latitudes. Its ion tail was measured at least 7 degrees in length in photographs taken in early April. Closest approach to Earth occurs on 26 April 2026. The comet is classified as hyperbolic, meaning its trajectory is not gravitationally bound to the Solar System. Its future outbound path will result in ejection from the Solar System entirely. The nucleus is estimated to be less than one kilometre in diameter.