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We investigate a novel satellite avoidance strategy to mitigate the impact oflarge commercial satellite constellations in low-Earth orbit on the Vera C.Rubin Observatory Legacy Survey of Space and Time (LSST). We simulate theorbits of currently planned Starlink and OneWeb constellations ($\sim$40,000satellites) to test how effectively an upgraded Rubin scheduler algorithm canavoid them, and assess how the overall survey is affected. Given a reasonablyaccurate satellite orbit forecast, we find it is possible to adjust thescheduler algorithm to effectively avoid some satellites. Overall, sacrificing10% of LSST observing time to avoid satellites reduces the fraction of LSSTvisits with streaks by a factor of two. Whether such a mitigation will berequired depends on the overall impact of streaks on science, which is not yetwell quantified. This is due to a lack of adequate information about satellitebrightness distributions as well as the impact of glints and low surfacebrightness residuals on alert purity and systematic errors in cosmologicalparameter estimation. A significant increase in the number of satellites ortheir brightness during Rubin Operations may make implementing this satelliteavoidance strategy worthwhile.

Satellite Constellation Avoidance with the Rubin Observatory Legacy Survey of Space and Time