Lunar Coordinate Time (TCL)

Lunar Coordinate Time (TCL) is the time coordinate of the Lunar Celestial Reference System, defined by the International Astronomical Union in 2024 by analogy with Geocentric Coordinate Time. It is a coordinate time: no real clock reads it directly.

Other terms worth reading next.

All thirty entries are in the glossary of lunar timekeeping.

Where it appears

Primary documents that use the term.

  • IAU 2024 Resolution II: LCRS and TCL [1]Official

Articles on this site that use the term.

Sources

  1. Resolution to establish a standard Lunar Celestial Reference System (LCRS) and Lunar Coordinate Time (TCL) — International Astronomical Union, Commission A3 — XXXII General Assembly, . Official document. Verified .
  2. Lunar reference timescale — A Bourgoin, P Defraigne, F Meynadier — Metrologia 63(1) 015003, . Peer-reviewed. Verified .

Last verified