use physics::constants
use units::si
use units::astronomical

@name("Light-second")
@description("The distance that light travels in one second.")
@url("https://en.wikipedia.org/wiki/Light-second")
@aliases(lightseconds, lsec)
unit lightsecond: Length = speed_of_light × 1 s

@name("Lunar mass")
@description("The mass of Earth's Moon.")
@url("https://en.wikipedia.org/wiki/Moon#Size_and_mass")
unit lunar_mass: Mass = 7.342e22 kg

@name("Lunar radius")
@description("The radius of Earth's Moon.")
@url("https://en.wikipedia.org/wiki/Moon#Size_and_mass")
unit lunar_radius: Length = 1737.4 km

@name("Earth mass")
@description("The mass of planet Earth.")
@url("https://en.wikipedia.org/wiki/Earth")
unit earth_mass: Mass = 5.9722e24 kg

@name("Earth radius")
@description("The radius of planet Earth.")
@url("https://en.wikipedia.org/wiki/Earth")
unit earth_radius: Length = 6371.0088 km

@name("Mars mass")
@description("The mass of planet Mars.")
@url("https://en.wikipedia.org/wiki/Mars")
unit mars_mass: Mass = 6.4171e23 kg

@name("Mars radius")
@description("The radius of planet Mars.")
@url("https://en.wikipedia.org/wiki/Mars")
unit mars_radius: Length = 3389.5 km

@name("Jupiter mass")
@description("The mass of planet Jupiter.")
@url("https://en.wikipedia.org/wiki/Jupiter")
unit jupiter_mass: Mass = 1.89813e27 kg

@name("Jupiter radius")
@description("The radius of planet Jupiter.")
@url("https://en.wikipedia.org/wiki/Jupiter")
unit jupiter_radius: Length = 71_492 km

@name("Solar mass")
@description("The mass of the Sun.")
@url("https://en.wikipedia.org/wiki/Sun")
unit solar_mass: Mass = 1.98847e30 kg

@name("Solar radius")
@description("The radius of the Sun.")
@url("https://en.wikipedia.org/wiki/Sun")
unit solar_radius: Length = 6.957e5 km

dimension RadiantFlux = Power

@name("Solar luminosity")
@description("The total amount of energy emitted by the Sun per unit time.")
@url("https://en.wikipedia.org/wiki/Solar_luminosity")
unit solar_luminosity: RadiantFlux = 3.828e26 W

dimension SpectralFluxDensity = RadiantFlux / Area / Frequency

@name("Jansky")
@url("https://en.wikipedia.org/wiki/Jansky")
@aliases(janskys, Jy: short)
unit jansky: SpectralFluxDensity = 1e-26 W / m^2 / Hz

@name("Solar flux unit")
@url("https://en.wikipedia.org/wiki/Solar_flux_unit")
@aliases(solarfluxunits, sfu: short)
unit solarfluxunit: SpectralFluxDensity = 1e4 Jy