Image Details
Caption: Figure 6.
Residuals of U3 positions by this work with respect to DE442+D7M25. Symbols share the same meaning with Figure 4. The label “occ” represents the occultation observations in 2022 (Δα∗ = − 11.47 ± 1.82 mas, Δδ = 2.28 ± 1.02 mas) and 2023 (Δα∗ = −42.83 ± 0.45 mas, Δδ = 1.12 ± 0.22 mas) (D. Herald et al. 2020), which are not used in the development of URA182 and DE442.
© 2026. The Author(s). Published by the American Astronomical Society.