De-reddened Gaia DR3 CMD for RSG 5 (black) compared with the CMDs of three reference clusters: Alpha Persei (81 Myr, orange), IC 2391 (43 Myr, cyan), and NGC 2451A (50 Myr, red). The members of each cluster are those with at least a 50% membership probability in the Hunt & Reffert (2023) Milky Way cluster catalog, with clusters de-reddened using the catalog’s mean A_v. Overlaid are PARSEC isochrones (Bressan et al. 2012; Tang et al. 2014; Chen et al. 2014; Fu et al. 2018; Nguyen et al. 2022) for our best-fit cluster age of RSG 5 (45 Myr) as well as the kinematic ages from Heyl et al. (2021) for the comparison clusters, with the colors matching those of the CMDs.