mass Comparison Table

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mass comparison table

Subject has unit has uncertainty has definition has equation has symbol has value is a kind of applies to has approval date is an instance of

atomic mass constant kg 0.00000013 × 10^-27 kg One-twelfth the mean mass of an atom of carbon 12 (including the orbital electrons). m_u 1.66053873 × 10^-27 kg 1961 mass

Chandrasekhar limit mass unit The maximum mass, approximately 1.4 M_sun, above which an object cannot support itself by electron degeneracy pressure; hence, the maximum mass of a white dwarf. mass

Chandrasekhar-Schonberg limit mass unit The mass limit for an isothermal core. In order to maintain its luminosity by hydrogen burning just outside the isothermal core, the star must keep a high temperature and a high pressure at the surface of the core. When the helium core exceeds about 12% of the star's total mass, the star can no longer adjust by small changes, but must drastically increase in radius and move rapidly from the main sequence. mass

Eddington limit mass unit In essence, radiation pressure must not exceed gravity. It is the limit beyond which the radiation force on matter in the emitting region is greater than the gravitational forces that hold the star together. L_E = 4πcGM/K_s, where K_s = Thomson and/or Compton scattering opacity. Eddington limit for a 1 M_sun star, 10³⁸ ergs s^-1. mass

gravitational mass mass unit That property of matter which makes it create a gravitational field and attract other particles (cf. inertial mass; equivalence principle). mass

Jeans mass mass unit The mass enclosed within a sphere of diameter equal to the Jeans length. mass

luminous mass mass unit The mass contributed by luminous matter in galaxies (see missing mass). Luminous mass density, 5 × 10^-32 g cm^-3 for H₀ = 50 km s^-1 Mpc^-1. mass

mass of the Galaxy mass unit The mass of the Milky Way. 1.8 × 10¹¹ M_Sun mass

particle mass kg changes in value are due solely to an increase in measurement accuracy or convention mass particle

Planck mass mass unit 0.0016 × 10^-8 kg About ten billion billion times the mass of a proton; about one-hundredth of a thousandth of a gram; about the mass of a small grain of dust. The typical mass equivalent of a vibrating string in string theory. m_P 2.1767 × 10^-8 kg mass

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Subject	has unit	has uncertainty	has definition	has equation	has symbol	has value	is a kind of	applies to	has approval date	is an instance of
atomic mass constant	kg	0.00000013 × 10^-27 kg	One-twelfth the mean mass of an atom of carbon 12 (including the orbital electrons).		m_u	1.66053873 × 10^-27 kg			1961	mass
Chandrasekhar limit	mass unit		The maximum mass, approximately 1.4 M_sun, above which an object cannot support itself by electron degeneracy pressure; hence, the maximum mass of a white dwarf.							mass
Chandrasekhar-Schonberg limit	mass unit		The mass limit for an isothermal core. In order to maintain its luminosity by hydrogen burning just outside the isothermal core, the star must keep a high temperature and a high pressure at the surface of the core. When the helium core exceeds about 12% of the star's total mass, the star can no longer adjust by small changes, but must drastically increase in radius and move rapidly from the main sequence.							mass
Eddington limit	mass unit		In essence, radiation pressure must not exceed gravity. It is the limit beyond which the radiation force on matter in the emitting region is greater than the gravitational forces that hold the star together. L_E = 4πcGM/K_s, where K_s = Thomson and/or Compton scattering opacity. Eddington limit for a 1 M_sun star, 10³⁸ ergs s^-1.							mass
gravitational mass	mass unit		That property of matter which makes it create a gravitational field and attract other particles (cf. inertial mass; equivalence principle).							mass
Jeans mass	mass unit		The mass enclosed within a sphere of diameter equal to the Jeans length.							mass
luminous mass	mass unit		The mass contributed by luminous matter in galaxies (see missing mass). Luminous mass density, 5 × 10^-32 g cm^-3 for H₀ = 50 km s^-1 Mpc^-1.							mass
mass of the Galaxy	mass unit		The mass of the Milky Way.			1.8 × 10¹¹ M_Sun				mass
particle mass	kg					changes in value are due solely to an increase in measurement accuracy or convention	mass	particle
Planck mass	mass unit	0.0016 × 10^-8 kg	About ten billion billion times the mass of a proton; about one-hundredth of a thousandth of a gram; about the mass of a small grain of dust. The typical mass equivalent of a vibrating string in string theory.		m_P	2.1767 × 10^-8 kg				mass