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Orts

SimpleEci

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Defined in: frame.rs:171

pub struct SimpleEci

Approximate Earth-centered inertial frame: the “parent frame” for the ERA-only Z rotation used by the simple path. Ignores precession, nutation, polar motion, and frame bias.

Meeus ephemerides return Gcrs (the analytical “geocentric inertial”), not SimpleEci. SimpleEci is specifically the complement of SimpleEcef under the ERA-only rotation; there is no direct relationship between SimpleEci and Gcrs other than both being Earth-centered inertial in the broad Eci category.

Trait Implementations

Section titled “Trait Implementations”