Which star has the most precisely measured oscillations?

The Sun is the most precisely studied star in terms of oscillations, thanks to helioseismology. Scientists measure tiny surface vibrations caused by sound waves traveling through the solar interior. These oscillations let researchers infer temperature, density, and motion deep inside the Sun. Space missions and ground-based networks have made the Sun a benchmark for understanding other stars. By comparing solar oscillations with asteroseismology of distant stars, astronomers can probe stellar interiors across the galaxy.