astronomical library

Classes

Acceleration: The rate of change of speed of an object. See the Wikipedia entry for Acceleration for more information.
AccelerationUnits: Units acceptable for use in describing Acceleration quantities.
EnergyFlux: The rate of transfer of energy through a surface. See the Wikipedia entry for Energy density for more information.
Frequency: The number of occurrences of a repeating event per unit time. See the Wikipedia entry for Frequency for more information.
Length: Represents the length physical quantity (one of the seven base SI quantities). See the Wikipedia entry for Length for more information.
LengthUnits: Units acceptable for use in describing Length quantities.
Mass: Represents the mass physical quantity (one of the seven base SI quantities), that determines the strength of a body's mutual gravitational attraction to other bodies. See the Wikipedia entry for Mass for more information.
Power: Amount of energy per unit time. See the Wikipedia entry for Power (physics) for more information.
SpectralIrradianceUnits: Units acceptable for use in describing SpectralIrradiance quantities.
TimeUnits: Units acceptable for use in describing Time quantities.

earthMass → const Mass: Mass of the Earth.
earthRadiusEquatorial → const Length: The radius of the Earth at the equator.
gravitySolarSurface → const Acceleration: The gravitational acceleration experienced at the 'surface' of the Sun.
hubbleConstant → const Frequency: Used to describe the expansion of the universe.
solarConstant → const EnergyFlux: The mean solar electromagnetic radiation (the solar irradiance) per unit area that would be incident on a plane perpendicular to the rays, at a distance of one astronomical unit (AU) from the Sun.
solarLuminosity → const Power: The solar luminosity constant is the radiant flux (power emitted in the form of photons) emitted by the Sun (a typical value; the Sun's output actually varies slightly over time).
solarMass → const Mass: Mass of the Sun.
solarRadius → const Length: The radius of the Sun.
wienDisplacement → const MiscQuantity: Wien Displacement Law Constant ('b')

astronomicalUnits → LengthUnits: The mean distance from the center of the earth to the center of the sun.
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gees → AccelerationUnits: A unit based on the acceleration experienced by a free-falling body at the Earth's surface.
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janskys → SpectralIrradianceUnits: A non-SI unit of spectral irradiance used especially in radio astronomy.
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lightYears → LengthUnits: The distance light travels in one year.
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microjanskys ↔ SpectralIrradianceUnits: One millionth of a Jansky.
getter/setter pair
parsecs → LengthUnits: A non-standard unit of length.
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xUnits → LengthUnits: A non-standard unit of length.
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yearsJulian → TimeUnits: Defined as exactly 365.25 days of 86400 SI seconds each. The length of the Julian year is the average length of the year in the Julian calendar that was used in Western societies until some centuries ago, and from which the unit is named.
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yearsSidereal → TimeUnits: Sidereal years as a unit.
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yearsTropical → TimeUnits: Tropical years as a unit.
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