parent parent_name family_id family_name c_param author ref method 100440 1996 PJ6 -1 1996PJ6 -1.0000 Nesvorny 2025arXiv250800753N/ HCM-2025 44 Nysa 405 Nysa-Polana -0.4700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14