Notes. The resonance ratios k_p:k are all with Neptune. The references used are abbreviated in LY07 (Lykawka & Mukai 2007), GL08 (Gladman et al. 2008), GL12 (Gladman et al. 2012), SH16 (Sheppard et al. 2016) and BA16 (Bannister et al. 2016). A cross indicates that the object is classified as “resonant”; a star indicates that the article provides also the oscillation amplitude of the resonant angle with its uncertainty. In LY07 and GL12, the star is omitted if the classification is said “insecure”. The right part of the table gives the characteristics of the resonant secular models obtained in this paper: a₀ is the reference semi-major axis chosen (au) whereas η₀ (no unit) and −2πJ (au² rad² yr^-1) are the fixed parameters. Finally, ω (rad) and (au) are the current secular argument of perihelion and reference perihelion distance of the object (see Sect. 2.1). Blank fields mean that the object was found non-resonant in the numerical integration starting from the nominal orbit given by AstDyS database. In the particular case of 2014 FZ₇₁, a secular model was developed although the nominal orbital solution was not resonant (see Sect. 3.3). In theory, the 1-sigma error bars would allow it also for 2015 GP₅₀, 2012 FH₈₄ and 2013 FQ₂₈.