lunarwhere

LunarWhere is a term used to describe a conceptual framework and data model for indexing locations on the Moon using a queryable coordinate system. It is designed to support precise, machine-readable references to lunar features, landing sites, and mapped surface areas for planning, science, and simulation tasks. The concept emphasizes interoperability across diverse lunar datasets, agencies, and missions.

Coordinate reference: LunarWhere typically employs selenographic coordinates in conjunction with an explicit epoch and reference frame, often aligned with IAU conventions for mean orientation and libration-corrected positions. Features are identified by a combination of a feature_id, standardized name, and metadata about data provenance and resolution.

Data model: The standard representation associates each location with latitude and longitude, a feature or region designation, a confidence or uncertainty estimate, and a data source or mission. Optional fields may include elevation, surface type, geologic unit, and time-stamped observations. The model supports hierarchical grouping by feature, region, or quadrangle.

Applications: LunarWhere can assist mission planners in site selection, scientists in targeting observations, and developers in building interoperable lunar catalogs. It also supports simulations, educational tools, and archival research by providing consistent references across datasets.

See also: selenography, IAU nomenclature for lunar features, lunar data repositories, lunar reconnaissance orbiter.