Unlocking the Secrets of Star Cluster UPK 220 with Gaia and TESS

The study analyzes open star cluster UPK 220 using Gaia DR3 and TESS data, identifying eight variable stars, including eclipsing binaries and pulsating stars. By combining these findings with stellar models, the team determined the cluster’s distance (832 parsecs), age (200 million years), and metal-poor composition, refining previous estimates.