Correction Issued for Study on Satellite Interference with Space Astronomy

Researchers have issued a formal correction to a recent study published in Nature regarding the impact of satellite megaconstellations on space-based astronomy. The original paper, which analyzed the potential for satellite interference with various space telescopes, contained a significant technical error concerning the orbital parameters of the ARRAKIHS mission. Specifically, the authors initially applied a minimum Earth limb angle of 7.6°—the standard for the Hubble Space Telescope—rather than the 55.7° angle specified in the ARRAKIHS mission proposal.

This adjustment significantly alters the projected interference levels for the mission. With the corrected limb angle, the estimated number of satellite trails per exposure drops dramatically. For a scenario involving 560,000 satellites, the projected interference fell from approximately 69 trails per exposure to just 3.22. Similarly, in a high-density scenario of one million satellites, the predicted fraction of the field of view obscured by trails was revised downward from 22.3% to less than 1%.

These findings highlight the critical importance of precise mission-specific modeling when assessing the environmental impact of the growing satellite industry. While the correction demonstrates that the ARRAKIHS mission may be more resilient to satellite interference than previously reported, the study remains a vital contribution to the ongoing dialogue between the aerospace industry and the astronomical community. Accurate data is essential for policymakers and space agencies as they work to balance the rapid expansion of orbital infrastructure with the preservation of deep-space observation capabilities.