diff --git a/src/cartesian.jl b/src/cartesian.jl
index 30d3d63..0a21b35 100644
--- a/src/cartesian.jl
+++ b/src/cartesian.jl
@@ -1,4 +1,4 @@
-struct CartesianCoords{TC<:AbstractSkyCoords, TF<:AbstractFloat} <: AbstractSkyCoords
+struct CartesianCoords{TC<:AbstractSkyCoords, TF<:Real} <: AbstractSkyCoords
     vec::SVector{3,TF}
 end
 
diff --git a/src/types.jl b/src/types.jl
index 83693cc..8eaf6d1 100644
--- a/src/types.jl
+++ b/src/types.jl
@@ -17,13 +17,13 @@ This is the current standard adopted by the International Astronomical Union not
 - `ra` - Right ascension in radians (0, 2π)
 - `dec` - Declination in radians (-π/2, π/2)
 """
-struct ICRSCoords{T<:AbstractFloat} <: AbstractSkyCoords
+struct ICRSCoords{T<:Real} <: AbstractSkyCoords
     ra::T
     dec::T
-    ICRSCoords{T}(ra, dec) where {T<:AbstractFloat} = new(mod2pi(ra), dec)
+    ICRSCoords{T}(ra, dec) where {T<:Real} = new(mod2pi(ra), dec)
 end
-ICRSCoords(ra::T, dec::T) where {T<:AbstractFloat} = ICRSCoords{T}(ra, dec)
-ICRSCoords(ra::Real, dec::Real) = ICRSCoords(promote(float(ra), float(dec))...)
+ICRSCoords(ra::T, dec::T) where {T<:Real} = ICRSCoords{float(T)}(ra, dec)
+ICRSCoords(ra::Real, dec::Real) = ICRSCoords(promote(ra, dec)...)
 ICRSCoords(c::T) where {T<:AbstractSkyCoords} = convert(ICRSCoords, c)
 ICRSCoords{F}(c::T) where {F,T<:AbstractSkyCoords} = convert(ICRSCoords{F}, c)
 
@@ -38,13 +38,13 @@ This coordinate system is defined based on the projection of the Milky Way galax
 - `l` - Galactic longitude in radians (-π, π)
 - `b` - Galactic latitude in radians (-π/2, π/2)
 """
-struct GalCoords{T<:AbstractFloat} <: AbstractSkyCoords
+struct GalCoords{T<:Real} <: AbstractSkyCoords
     l::T
     b::T
-    GalCoords{T}(l, b) where {T<:AbstractFloat} = new(mod2pi(l), b)
+    GalCoords{T}(l, b) where {T<:Real} = new(mod2pi(l), b)
 end
-GalCoords(l::T, b::T) where {T<:AbstractFloat} = GalCoords{T}(l, b)
-GalCoords(l::Real, b::Real) = GalCoords(promote(float(l), float(b))...)
+GalCoords(l::T, b::T) where {T<:Real} = GalCoords{float(T)}(l, b)
+GalCoords(l::Real, b::Real) = GalCoords(promote(l, b)...)
 GalCoords(c::T) where {T<:AbstractSkyCoords} = convert(GalCoords, c)
 GalCoords{F}(c::T) where {F,T<:AbstractSkyCoords} = convert(GalCoords{F}, c)
 
@@ -60,13 +60,13 @@ The supergalactic plane as so-far observed is more or less perpendicular to the
 - `l` - SuperGalCoords longitude in radians (-π, π)
 - `b` - SuperGalCoords latitude in radians (-π/2, π/2)
 """
-struct SuperGalCoords{T<:AbstractFloat} <: AbstractSkyCoords
+struct SuperGalCoords{T<:Real} <: AbstractSkyCoords
     l::T
     b::T
-    SuperGalCoords{T}(l, b) where {T<:AbstractFloat} = new(mod2pi(l), b)
+    SuperGalCoords{T}(l, b) where {T<:Real} = new(mod2pi(l), b)
 end
-SuperGalCoords(l::T, b::T) where {T<:AbstractFloat} = SuperGalCoords{T}(l, b)
-SuperGalCoords(l::Real, b::Real) = SuperGalCoords(promote(float(l), float(b))...)
+SuperGalCoords(l::T, b::T) where {T<:Real} = SuperGalCoords{float(T)}(l, b)
+SuperGalCoords(l::Real, b::Real) = SuperGalCoords(promote(l, b)...)
 SuperGalCoords(c::T) where {T<:AbstractSkyCoords} = convert(SuperGalCoords, c)
 SuperGalCoords{F}(c::T) where {F,T<:AbstractSkyCoords} = convert(SuperGalCoords{F}, c)
 
@@ -82,14 +82,13 @@ This coordinate system maps the celestial sphere based on a geocentric observer.
 - `ra` - Right ascension in radians (0, 2π)
 - `dec` - Declination in radians (-π/2, π/2)
 """
-struct FK5Coords{e,T<:AbstractFloat} <: AbstractSkyCoords
+struct FK5Coords{e,T<:Real} <: AbstractSkyCoords
     ra::T
     dec::T
-    FK5Coords{e,T}(ra, dec) where {T<:AbstractFloat,e} = new(mod2pi(ra), dec)
+    FK5Coords{e,T}(ra, dec) where {T<:Real,e} = new(mod2pi(ra), dec)
 end
-FK5Coords{e}(ra::T, dec::T) where {e,T<:AbstractFloat} = FK5Coords{e,T}(ra, dec)
-FK5Coords{e}(ra::Real, dec::Real) where {e} =
-    FK5Coords{e}(promote(float(ra), float(dec))...)
+FK5Coords{e}(ra::T, dec::T) where {e,T<:Real} = FK5Coords{e,float(T)}(ra, dec)
+FK5Coords{e}(ra::Real, dec::Real) where {e} = FK5Coords{e}(promote(ra, dec)...)
 FK5Coords{e}(c::T) where {e,T<:AbstractSkyCoords} = convert(FK5Coords{e}, c)
 FK5Coords{e,F}(c::T) where {e,F,T<:AbstractSkyCoords} = convert(FK5Coords{e,F}, c)
 constructorof(::Type{<:FK5Coords{e}}) where {e} = FK5Coords{e}
@@ -106,13 +105,13 @@ This coordinate system is geocentric with the ecliptic plane as the xy-plane wit
 - `lon` - Longitude in radians (0, 2π)
 - `lat` - Latitude in radians (-π/2, π/2)
 """
-struct EclipticCoords{e,T<:AbstractFloat} <: AbstractSkyCoords
+struct EclipticCoords{e,T<:Real} <: AbstractSkyCoords
     lon::T
     lat::T
-    EclipticCoords{e,T}(lon, lat) where {e,T<:AbstractFloat} = new(mod2pi(lon), lat)
+    EclipticCoords{e,T}(lon, lat) where {e,T<:Real} = new(mod2pi(lon), lat)
 end
-EclipticCoords{e}(lon::T, lat::T) where {e,T<:AbstractFloat} = EclipticCoords{e,T}(lon, lat)
-EclipticCoords{e}(lon::Real, lat::Real) where {e} = EclipticCoords{e}(promote(float(lon), float(lat))...)
+EclipticCoords{e}(lon::T, lat::T) where {e,T<:Real} = EclipticCoords{e,float(T)}(lon, lat)
+EclipticCoords{e}(lon::Real, lat::Real) where {e} = EclipticCoords{e}(promote(lon, lat)...)
 EclipticCoords{e}(c::AbstractSkyCoords) where {e} = convert(EclipticCoords{e}, c)
 EclipticCoords{e,F}(c::AbstractSkyCoords) where {e,F} = convert(EclipticCoords{e,F}, c)
 constructorof(::Type{<:EclipticCoords{e}}) where {e} = EclipticCoords{e}