Comparison of the upper limits for Ṁ_acc in LkCa 15b with values derived for accreting objects with masses within the range of low-mass stars to planets. All the BDs and planets are marked with their names. For the objects from the Zhou et al. (2014) study Ṁ_acc was estimated using UV and optical photometry. For the Close et al. (2014) object Ṁ_acc was estimated from the Hα emission detected with MagAO. For the rest of the objects Ṁ_acc was derived from X-Shooter data using the method outlined in Sect. 4. The majority of the sources are low-mass stars and the values of Ṁ_acc are taken from Alcalá et al. (2014). The black line represents the linear fit to the results of Alcalá et al. (2014) and it shows the correlation between M and Ṁ_acc. The dashed lines represent the 1σ deviation from the fit.