A Sky Brightness Model for the Starlink “Visorsat” Spacecraft

  title={A Sky Brightness Model for the Starlink “Visorsat” Spacecraft},
  author={Richard E. Cole},
  journal={Research Notes of the AAS},
  • R. Cole
  • Published 1 October 2020
  • Environmental Science
  • Research Notes of the AAS
A model of the brightness of the “visorsat” Starlink spacecraft is presented based on published information on the engineering design and 80 observations of individual visorsats. Comments are offered on the implications of this model on the visibility of visorsat spacecraft across the sky. 

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This report is being updated as work proceeds. Work continues to make and obtain more observations to allow further detailing of the model

    The visorsats are marginally brighter, low in the sky on similar azimuths to the Sun (so at high phase angles)

      On this basis the visorsat design is only marginally fainter at zenith than the Darksat design, which has been observed at high elevation at 5.8 m by the author (Cole 2020) and by others

        A Sky Brightness Model for the Starlink ‘Visorsat

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