Earth Namespace Reference

Variables
const length	aphelion = 152'097'597_km
const length	perihelion = 147'098'450_km
const length	semi_major_axis = 149'598'023_km
const dimensionless	eccentricity = 0.016'7086
const SI::time	sidereal_orbital_period = 365.256'363'004_day
const velocity	average_orbital_speed = 29.7827_km_per_s
const angle	mean_anomaly = 358.617_deg
const length	mean_radius = 6'371.0_km
const length	equatorial_radius = 6'378.137_km
const length	polar_radius = 6'356.752_km
const dimensionless	flattening = 1.0/298.257'222'101
const length	equatorial_circumference = 40'075.017_km
const length	meridional_circumference = 40'007.863_km
const area	surface_area = 510'072'000_km²
const area	land_area = 148'940'000_km²
const area	water_area = 361'132'000_km²
const SI::volume	volume = 1.08321e12_km³
const SI::mass	mass = 5.97217e24_kg
const density	mean_density = 5.513_g_per_cm³
const acceleration	surface_gravity = 9.80665_m_per_s²
	exactly 1 g0
const dimensionless	moment_of_inertia_factor = 0.3307
const velocity	escape_velocity = 11.186_km_per_s
const SI::time	synodic_rotation_period = 24_h
const velocity	equatorial_rotation_velocity = 1674.4_km_per_h
const angle	axial_tilt = 23.439'2811_deg
const dimensionless	geometric_albedo = 0.434
const dimensionless	bond_albedo = 0.294
const temperature	blackbody_temperature = 255_K
const temperature	min_surface_temperature = -89.2_degC
const temperature	mean_surface_temperature = 14.76_degC
const temperature	max_surface_temperature = 56.7_degC
const pressure	surface_pressure = 101.325_kPa
	at sea level
const dimensionless	nitrogen = 78.08_percent
	dry air
const dimensionless	oxygen = 20.95_percent
	dry air
const dimensionless	water_vapor = 1_percent
	up to 1%, is variable
const dimensionless	argon = 0.9340_percent
const dimensionless	carbon_dioxide = 0.0430_percent
const dimensionless	neon = 0.00182_percent
const dimensionless	helium = 0.00052_percent
const dimensionless	methane = 0.00017_percent
const dimensionless	krypton = 0.00011_percent
const dimensionless	hydrogen = 0.00006_percent
const dimensionless	population = 8.2e9

Variable Documentation

aphelion

const length Earth::aphelion = 152'097'597_km

argon

const dimensionless Earth::argon = 0.9340_percent

average_orbital_speed

const velocity Earth::average_orbital_speed = 29.7827_km_per_s

axial_tilt

const angle Earth::axial_tilt = 23.439'2811_deg

blackbody_temperature

const temperature Earth::blackbody_temperature = 255_K

bond_albedo

const dimensionless Earth::bond_albedo = 0.294

carbon_dioxide

const dimensionless Earth::carbon_dioxide = 0.0430_percent

eccentricity

const dimensionless Earth::eccentricity = 0.016'7086

equatorial_circumference

const length Earth::equatorial_circumference = 40'075.017_km

equatorial_radius

const length Earth::equatorial_radius = 6'378.137_km

equatorial_rotation_velocity

const velocity Earth::equatorial_rotation_velocity = 1674.4_km_per_h

escape_velocity

const velocity Earth::escape_velocity = 11.186_km_per_s

flattening

const dimensionless Earth::flattening = 1.0/298.257'222'101

geometric_albedo

const dimensionless Earth::geometric_albedo = 0.434

helium

const dimensionless Earth::helium = 0.00052_percent

hydrogen

const dimensionless Earth::hydrogen = 0.00006_percent

krypton

const dimensionless Earth::krypton = 0.00011_percent

land_area

const area Earth::land_area = 148'940'000_km²

mass

const SI::mass Earth::mass = 5.97217e24_kg

max_surface_temperature

const temperature Earth::max_surface_temperature = 56.7_degC

mean_anomaly

const angle Earth::mean_anomaly = 358.617_deg

mean_density

const density Earth::mean_density = 5.513_g_per_cm³

mean_radius

const length Earth::mean_radius = 6'371.0_km

mean_surface_temperature

const temperature Earth::mean_surface_temperature = 14.76_degC

meridional_circumference

const length Earth::meridional_circumference = 40'007.863_km

methane

const dimensionless Earth::methane = 0.00017_percent

min_surface_temperature

const temperature Earth::min_surface_temperature = -89.2_degC

moment_of_inertia_factor

const dimensionless Earth::moment_of_inertia_factor = 0.3307

neon

const dimensionless Earth::neon = 0.00182_percent

nitrogen

const dimensionless Earth::nitrogen = 78.08_percent

dry air

oxygen

const dimensionless Earth::oxygen = 20.95_percent

dry air

perihelion

const length Earth::perihelion = 147'098'450_km

polar_radius

const length Earth::polar_radius = 6'356.752_km

population

const dimensionless Earth::population = 8.2e9

semi_major_axis

const length Earth::semi_major_axis = 149'598'023_km

sidereal_orbital_period

const SI::time Earth::sidereal_orbital_period = 365.256'363'004_day

surface_area

const area Earth::surface_area = 510'072'000_km²

surface_gravity

const acceleration Earth::surface_gravity = 9.80665_m_per_s²

exactly 1 g0

surface_pressure

const pressure Earth::surface_pressure = 101.325_kPa

at sea level

synodic_rotation_period

const SI::time Earth::synodic_rotation_period = 24_h

volume

const SI::volume Earth::volume = 1.08321e12_km³

water_area

const area Earth::water_area = 361'132'000_km²

water_vapor

const dimensionless Earth::water_vapor = 1_percent

up to 1%, is variable