parent parent_name family_id family_name c_param author ref method 24 Themis 602 Themis 0.2000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14 656 Beagle 620 Beagle -2.4100 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14