Astronomical Constants

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mXparser provides a rich collection of built-in math functions, math expressions, and math symbols. Familiarize yourself with the scope and the syntax. Math collection internal help is also available directly from the software – see the tutorial and the API documentation for all the details. The math collection library is available at runtime and is fully and identically supported by the Java (including Kotlin, Android), C# (all .NET) and C++ versions.

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mXparser – built-in Astronomical Constants

Keyword	Type	Syntax	Since	Description
[ly]	Constant value	[ly]	4.0	Light year – Astronomical constant ly [m] (m=1) – Constant value
[au]	Constant value	[au]	4.0	Astronomical unit – Astronomical constant au, AU [m] (m=1) – Constant value
[pc]	Constant value	[pc]	4.0	Parsec – Astronomical constant pc [m] (m=1) – Constant value
[kpc]	Constant value	[kpc]	4.0	Kiloparsec – Astronomical constant kpc [m] (m=1) – Constant value
[Earth-R-eq]	Constant value	[Earth-R-eq]	4.0	Earth equatorial radius – Astronomical constant Rª⊕ [m] (m=1) – Constant value
[Earth-R-po]	Constant value	[Earth-R-po]	4.0	Earth polar radius – Astronomical constant Rᵇ⊕ [m] (m=1) – Constant value
[Earth-R]	Constant value	[Earth-R]	4.0	Earth mean radius – Astronomical constant R⊕ (m=1) – Constant value
[Earth-M]	Constant value	[Earth-M]	4.0	Earth mass – Astronomical constant M⊕ [kg] (kg=1) – Constant value
[Earth-D]	Constant value	[Earth-D]	4.0	Earth-Sun distance – Astronomical constant – Semi major axis [m] (m=1) – Constant value
[Moon-R]	Constant value	[Moon-R]	4.0	Moon mean radius – Astronomical constant [m] (m=1) – Constant value
[Moon-M]	Constant value	[Moon-M]	4.0	Moon mass – Astronomical constant [kg] (kg=1) – Constant value
[Moon-D]	Constant value	[Moon-D]	4.0	Moon-Earth distance – Astronomical constant – Semi major axis [m] (m=1) – Constant value
[Solar-R]	Constant value	[Solar-R]	4.0	Solar mean radius – Astronomical constant R☉ [m] (m=1) – Constant value
[Solar-M]	Constant value	[Solar-M]	4.0	Solar mass – Astronomical constant M☉ [kg] (kg=1) – Constant value
[Mercury-R]	Constant value	[Mercury-R]	4.0	Mercury mean radius – Astronomical constant [m] (m=1) – Constant value
[Mercury-M]	Constant value	[Mercury-M]	4.0	Mercury mass – Astronomical constant [kg] (kg=1) – Constant value
[Mercury-D]	Constant value	[Mercury-D]	4.0	Mercury-Sun distance – Astronomical constant – Semi major axis [m] (m=1) – Constant value
[Venus-R]	Constant value	[Venus-R]	4.0	Venus mean radius – Astronomical constant [m] (m=1) – Constant value
[Venus-M]	Constant value	[Venus-M]	4.0	Venus mass – Astronomical constant [kg] (kg=1) – Constant value
[Venus-D]	Constant value	[Venus-D]	4.0	Venus-Sun distance – Astronomical constant – Semi major axis [m] (m=1) – Constant value
[Mars-R]	Constant value	[Mars-R]	4.0	Mars mean radius – Astronomical constant [m] (m=1) – Constant value
[Mars-M]	Constant value	[Mars-M]	4.0	Mars mass – Astronomical constant [kg] (kg=1) – Constant value
[Mars-D]	Constant value	[Mars-D]	4.0	Mars-Sun distance – Astronomical constant – Semi major axis [m] (m=1) – Constant value
[Jupiter-R]	Constant value	[Jupiter-R]	4.0	Jupiter mean radius – Astronomical constant [m] (m=1) – Constant value
[Jupiter-M]	Constant value	[Jupiter-M]	4.0	Jupiter mass – Astronomical constant [kg] (kg=1) – Constant value
[Jupiter-D]	Constant value	[Jupiter-D]	4.0	Jupiter-Sun distance – Astronomical constant – Semi major axis [m] (m=1) – Constant value
[Saturn-R]	Constant value	[Saturn-R]	4.0	Saturn mean radius – Astronomical constant [m] (m=1) – Constant value
[Saturn-M]	Constant value	[Saturn-M]	4.0	Saturn mass – Astronomical constant [kg] (kg=1) – Constant value
[Saturn-D]	Constant value	[Saturn-D]	4.0	Saturn-Sun distance – Astronomical constant – Semi major axis [m] (m=1) – Constant value
[Uranus-R]	Constant value	[Uranus-R]	4.0	Uranus mean radius – Astronomical constant [m] (m=1) – Constant value
[Uranus-M]	Constant value	[Uranus-M]	4.0	Uranus mass – Astronomical constant [kg] (kg=1) – Constant value
[Uranus-D]	Constant value	[Uranus-D]	4.0	Uranus-Sun distance – Astronomical constant – Semi major axis [m] (m=1) – Constant value
[Neptune-R]	Constant value	[Neptune-R]	4.0	Neptune mean radius – Astronomical constant [m] (m=1) – Constant value
[Neptune-M]	Constant value	[Neptune-M]	4.0	Neptune mass – Astronomical constant [kg] (kg=1) – Constant value
[Neptune-D]	Constant value	[Neptune-D]	4.0	Neptune-Sun distance – Astronomical constant – Semi major axis [m] (m=1) – Constant value

as of 2023-01-29

Nuget – Package Manager (C#, F#, Visual Basic, …)

Install-Package MathParser.org-mXparser -Version 6.1.0

Nuget – .NET CLI

dotnet add package MathParser.org-mXparser --version 6.1.0

Nuget – Package Reference

<PackageReference Include="MathParser.org-mXparser" Version="6.1.0"/>

Maven – Dependency (Java, Kotlin, Scala, Groovy, …)

<dependency> <groupid>org.mariuszgromada.math</groupid> <artifactid>MathParser.org-mXparser</artifactid> <version>6.1.0</version> </dependency>

Maven – Gradle

implementation 'org.mariuszgromada.math:MathParser.org-mXparser:6.1.0'

CMake – Dependency / FetchContent (C++, MSVC, LLVM/Clang, GNU/GCC, MinGW, MSYS2, WSL, Windows, Linux, Unix, MacOS)

include(FetchContent) FetchContent_Declare(MathParserOrgMxParserGIT_REPOSITORYhttps://github.com/mariuszgromada/MathParser.org-mXparser.gitGIT_TAGv.6.1.0SOURCE_SUBDIR CURRENT/cpp/lib ) FetchContent_MakeAvailable(MathParserOrgMxParser) target_link_libraries(YourExecutableMathParserOrgMxParser)