Fig. 1

Constraining Itokawa’s parent body without parameter uncertainty. The range of possible formation time and radius values for an Itokawa-like parent body following the methods of Wakita et al. (2014) with no uncertainties in model parameters taken into account. The gray dots are locations in the free parameter space at which simulations were performed. The peak central temperatures achieved in these simulations were linearly interpolated to create the color map pictured. Two of the isotherms shown correspond to 1073 and 1273 K on the peak central temperature map shown in color, and the third isotherm corresponds to 973 K on a map of central temperatures at 7.6 Ma which is not pictured