reference ellipsoid
C38349
concept
A reference ellipsoid is a mathematically defined, smooth, oblate spheroid that approximates the shape of the Earth (or another celestial body) and serves as a standard surface for geodetic calculations and coordinate systems.
Observed surface forms (4)
- oblate spheroid ×2
- Earth ellipsoid ×1
- Earth ellipsoid model ×1
- geodetic reference ellipsoid ×1
Instances (5)
- Airy Modified ellipsoid
- Maclaurin spheroid via concept surface "oblate spheroid"
- Airy 1830 ellipsoid
- Bessel ellipsoid
- GRS80 via concept surface "geodetic reference ellipsoid"