The Neptunian gravity estimated from the motion of Triton based on astrometric observations Bo Wang, Jianguo Yan, Wutong Gao, Ye Yuan, Shangbiao Sun, Mao Ye and Jean-Pierre Barriot A&A, 671 (2023) A70 Published online: 08 March 2023 DOI: 10.1051/0004-6361/202244537