//[astronomy](../../../index.md)/[io.github.cosinekitty.astronomy](../index.md)/[StateVector](index.md)/[vy](vy.md)

# vy

val [vy](vy.md): [Double](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-double/index.html)

A Cartesian velocity y-component expressed in AU/day.