formula.expert

Constants library

1 value, each with its units, its uncertainty, and where it came from.

Astronomical 1

Earth Axial Tilt (Obliquity of the Ecliptic)

ε=0.4090928 rad\varepsilon = 0.4090928\ \text{rad}

radObliquity of the ecliptic at J2000, 23.4393° or 0.409 rad — the tilt of Earth's spin axis that causes the seasons.