7681 20260102145907.0 POSTER-2026-0005 Xiao, H. Mercury's Annual and Long-Period Librations from Co-Registration of MLA Profiles 2025 2025-03-14 We co-register the Mercury Laser Altimeter (MLA) altimetric profiles to precisely track the temporal variation of Mercury's rotation angle. Annual and long-term librations are extracted and analyzed in term of Mercury' interior structure. NO Stark, A. Bertone, S. Rivoldini, A. Baland, R.-M. Yseboodt, M. Stenzel, O. Briaud, A. Hussmann, H. Lara, L. M. Gutiérrez, P. G. 56th Lunar and Planetary Science Conference, marie.yseboodt@ksb-orb.be CPOSTER