Inferred energetics for J1316+2614. Left: Different energies associated with J1316+2614. Binding energies are shown in dark red (horizontal dashed lines) for star-formation efficiencies of 0.4, 0.7, and 0.95. The total kinetic energy is shown in black and includes the contribution of stellar winds (dashed green line) and supernovae (dashed yellow line). They are obtained from BPASS models assuming a continuous star-formation history with SFR = 898 M_⊙ yr⁻¹, Z = 0.008 and the Chabrier (2003) IMF. The age of J1316+2614 and the corresponding uncertainty are marked in blue. Right: Critical star-formation efficiency for gas expulsion by stellar winds (green), normal supernovae (10⁵¹ erg, yellow), and hypernovae (10⁵³ erg, red) as a function of the compactness index C₅ as proposed by Krause et al. (2016). The location of J1316+2614 is shown in blue. The compactness indexes of other star clusters, including the Sunburst cluster, are marked with dashed grey lines.