Lunar Time Ephemeris LTE440 (LTE440)LTE440 is a numerical lunar time ephemeris: a software package that calculates Lunar Coordinate Time and its relations to the barycentric scales, built on the JPL DE440 ephemeris. Its stated accuracy is better than 0.15 ns before 2050.Related termsDerived fromEphemerisOther terms worth reading next.Lunar Coordinate TimeTCLBarycentric Dynamical TimeTDBEpochAll thirty entries are in the glossary of lunar timekeeping.SourcesLunar Time Ephemeris LTE440: definitions, algorithm and performance — Xu Lu, Tian-Ning Yang, Yi Xie, Purple Mountain Observatory, Chinese Academy of Sciences — Astronomy & Astrophysics 704, A76, 23 September 2025. Peer-reviewed. Verified 23 August 2026.Lunar Time Ephemeris LTE440: User Manual — Xu Lu, Tian-Ning Yang, Yi Xie — arXiv:2506.19213, 24 June 2025. Peer-reviewed. Verified 23 August 2026.Last verified 23 August 2026