B.-F. Guo

Improved Astrometry in a Sparse Star Field and New Positions of Triton and Nereid (2018–2020)

High-precision astrometry of Neptunian satellites is fundamental for determining their orbital parameters and can provide clues to the origin and evolution of the Neptunian system. During 2018–2020, Neptune passed through a region at a high galactic latitude (about −58∘), where background Gaia reference stars are relat...