Black dots are all the TNOs discovered with semimajor axes from 38 to 50 au. Purple diamonds are the CCs with partial/complete light curves reported in this work, red stars are the two likely contact binaries with full light curves, 2002 CC₂₄₉ (Thirouin & Sheppard 2017) and 2004 VC₁₃₁ (this work), and green circles indicate two candidates for likely contact binaries, 2004 MU₈ and 2004 VU₇₅ (this work). Blue continuous lines are the 3:2, 5:3, 7:4, and 2:1 Neptune’s resonances. Orbital elements available at the Minor Planet Center (MPC, 2018 November).