Argüello moving light

Official source account — 2017 annual report, printed page 14: A witness in the Argüello district of Córdoba filmed a moving light on 9 June 2011, with a star visible in the background. CEFAE reconstructed the sky and interpreted the light as most probably the low-orbit STMSAT-1 satellite. Its proposed match used the straight path, steady speed and brightness, background Beta Herculis and disappearance toward the east as the satellite entered Earth's shadow. The summaries distinguish reported observations from the agency’s proposed explanations. Source Type A/B ratings describe explanatory confidence and are not encounter classes.