//astronomy/io.github.cosinekitty.astronomy/Aberration
enum Aberration : Enum<Aberration>
Aberration calculation options.
Aberration is an effect causing the apparent direction of an observed body to be shifted due to transverse movement of the Earth with respect to the rays of light coming from that body. This angular correction can be anywhere from 0 to about 20 arcseconds, depending on the position of the observed body relative to the instantaneous velocity vector of the Earth.
Some Astronomy Engine functions allow optional correction for aberration by passing in a value of this enumerated type.
Aberration correction is useful to improve accuracy of coordinates of apparent locations of bodies seen from the Earth. However, because aberration affects not only the observed body (such as a planet) but the surrounding stars, aberration may be unhelpful (for example) for determining exactly when a planet crosses from one constellation to another.
| Corrected Corrected() Request correction for aberration. |
|
| None None() Do not correct for aberration. |