Converter
geodetic reference surface · Geodesy · Modern/historical
reference ellipsoid
reference-only
- Record
- M601
- Definition quality
- Standardized
- Conversion mode
- reference only
- Calculator
- Reference only
Definition
A reference ellipsoid is a mathematically defined, slightly flattened model of Earth used for coordinates and GNSS positioning.
History & use
NOAA notes that ellipsoids are convenient geometric reference surfaces for resolving coordinates.
Modern use
Modern use is context-dependent and varies by region or measurement system.