Aethusas senaste periheliepassage skedde den 2 december 2023. Fotometriska observationer 2006 har gett vid handen att asteroiden har en rotationstid på 8,621 ± 0,004 timmar.[2][6]
^Erin Lee Ryan, Donald R. Mizuno, Sachindev S. Shenoy, Charles E. Woodward, Sean Carey, Alberto Noriega-Crespo, Kathleen E. Kraemer, Stephan D. Price (2012). The Kilometer-Sized Main Belt Asteroid Population as Revealed by Spitzer.
^Warner, Brian D. (2006). ”Asteroid lightcurve analysis at the Palmer Divide Observatory - March - June 2006”. Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 33 (4): sid. 85–88.