William Sheehan is a noted historian of astronomy, writer and retired psychiatrist. His books include Mercury (2018), Saturn (2019) and Venus (2022) in Reaktion's Kosmos series. He lives in Arizona, and asteroid 16037 is named Sheehan in his honour. Clifford J. Cunningham is a Research Fellow at the University of Southern Queensland and Associate Editor of the Journal of Astronomical History and Heritage. His books include Asteroids (2021) in Reaktion's Kosmos series. Asteroid 4276 (Clifford) is named in his honour.