Lower panel: primary mass vs separation for known BD-FFP and FFP-FFP binaries or candidates. The color scale indicates the age and the size is proportional to the mass ratio. 2MASSJ 1119 data from Best et al. (2017). WISEJ0146 data from Dupuy et al. (2015). 2MASSJ044144, ISO217 and 2MASSJ0422 data from Todorov et al. (2014). DENIS-PJ1859 data from Bouy et al. (2004). Data for 2MASSJ 1547 from Calissendorff et al. (2019). Data for 2MASSJ J1553 from Dupuy & Liu (2012). Data for NGC1333-NN10 from Langeveld et al. (2024). Data for [LAB2024] 139 from Luhman (2024). Data for Oph 98 from Fontanive et al. (2020) and for Oph 11 from Close et al. (2007). Data for LOri 167 from Barrado y Navascués et al. (2007). 2MASS1207 data from Chauvin et al. (2004). CFBD-SIRJ1458+1013 data from Delorme et al. (2010). CWISEPJ1935 data from De Furio et al. (2025a). J0535–0525 data from De Furio et al.De Furio (Meyer). The new multiple system from the present study (J042705.86+261520.3) is represented with a circle with a thick edge and follows the same color and size scales. Upper panel: distribution of separations reported for older and slightly more massive field T-dwarfs from Burgasser et al. (2006) (solid line) and field late-T and Y dwarfs from Fontanive et al. (2018) (dashed line).