74156 b 後發現的。 Stefano Meschiari, Gregory Laughlin, Steven S. Vogt, R. PaulButler, Eugenio J. Rivera, Nader Haghighipour, Peter Jalowiczor. The Lick-Carnegie
74156 c一起發現。 Stefano Meschiari, Gregory Laughlin, Steven S. Vogt, R. PaulButler, Eugenio J. Rivera, Nader Haghighipour, Peter Jalowiczor. The Lick-Carnegie