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Table 1.

Selected physical and dynamical parameters used for the simulated Didymos system, consistent with the current best estimates (Rivkin et al. 2021).

Parameter Value
Primary bulk density (ρP) 2.2 g cm−3
Secondary bulk densities (ρS) [1.85, 2.20, 2.55] g cm−3
Primary mass (MP) 5.47 × 1011 kg
Secondary masses (MS) [4.20, 4.99, 5.78]×109 kg
Primary diameter (DP) 780 m
Secondary diameter (DS) 164 m
Initial body separation (aorb) 1200 m
Initial orbital period (Porb) 11.92 h
Primary spin period (PP) 2.26 h
Secondary spin period (PS) 11.92 h
Assumed DART mass (MDART) 536 kg
Assumed DART speed (vDART) 6.15 km s−1

Notes. The body diameters are the volume-equivalent spherical diameters. A synchronous spin state for Dimorphos is assumed, and we refer the reader to Richardson et al. (2022) for further discussion on this assumption.

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