mp-units/docs/reference/systems_reference/systems/iau.md

IAU System

Namespace: mp_units::iau

Module: mp_units.systems

Header: <mp-units/systems/iau.h>

Units

Unit Name	Symbol	unit_symbol	Definition
codata2018::jovian_mass	M_♃ (M_JUP)	M_JUP	nominal_jovian_mass_parameter / newtonian_constant_of_gravitation
codata2018::newtonian_constant_of_gravitation	G	G	mag_ratio<667'430, 100'000> * mag_power<10, -11> * cubic(si::metre) / si::kilogram / square(si::second)
codata2018::solar_mass	M_☉ (M_SUN)	M_SUN	nominal_solar_mass_parameter / newtonian_constant_of_gravitation
codata2018::terrestrial_mass	M_⊕ (M_EARTH)	M_EARTH	nominal_terrestrial_mass_parameter / newtonian_constant_of_gravitation
nominal_jovian_equatorial_radius	R_♃ₑᴺ (R_JUP_E_N)	R_JUP_E_N	mag_ratio<71'492, 10'000> * mag_power<10, 7> * si::metre
nominal_jovian_mass_parameter	(GM)_♃ᴺ ((GM)_JUP_N)	GM_JUP_N	mag_ratio<12'668'653, 10'000'000> * mag_power<10, 17> * cubic(si::metre) / square(si::second)
nominal_jovian_polar_radius	R_♃ₚᴺ (R_JUP_P_N)	R_JUP_P_N	mag_ratio<66'854, 10'000> * mag_power<10, 7> * si::metre
nominal_solar_effective_temperature	Tₑff,☉ᴺ (T_EFF_SUN_N)	T_EFF_SUN_N	mag<5772> * si::kelvin
nominal_solar_luminosity	L_☉ᴺ (L_SUN_N)	L_SUN_N	mag_ratio<3'828, 1'000> * mag_power<10, 26> * si::watt
nominal_solar_mass_parameter	(GM)_☉ᴺ ((GM)_SUN_N)	GM_SUN_N	mag_ratio<13'271'244, 10'000'000> * mag_power<10, 20> * cubic(si::metre) / square(si::second)
nominal_solar_radius	R_☉ᴺ (R_SUN_N)	R_SUN_N	mag_ratio<6'957, 1'000> * mag_power<10, 8> * si::metre
nominal_terrestrial_equatorial_radius	R_⊕ₑᴺ (R_EARTH_E_N)	R_EARTH_E_N	mag_ratio<63'781, 10'000> * mag_power<10, 6> * si::metre
nominal_terrestrial_mass_parameter	(GM)_⊕ᴺ ((GM)_EARTH_N)	GM_EARTH_N	mag_ratio<3'986'004, 1'000'000> * mag_power<10, 14> * cubic(si::metre) / square(si::second)
nominal_terrestrial_polar_radius	R_⊕ₚᴺ (R_EARTH_P_N)	R_EARTH_P_N	mag_ratio<63'568, 10'000> * mag_power<10, 6> * si::metre
nominal_total_solar_irradiance	S_☉ᴺ (S_SUN_N)	S_SUN_N	mag<1361> * si::watt / square(si::metre)
parsec	pc	pc	astronomical_unit / (mag_ratio<1, 3600> * si::degree)

!!! note "Inline Namespaces"

The `mp_units::iau::codata2018` namespace is inline in `mp_units::iau`, making its units directly accessible from the parent namespace.