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physical object > natural object > celestial body > star > dwarf > brown dwarf
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brown dwarf comparison table
Subject is part of has surface temperature has acceptance statu has frequency has velocity has surface density has parallax has position on celestial sphere has symbol has radiation at surface has acronym has energy source has energy production has catalog has wavelength is a kind of has material has mass has synonym has definition has luminosity class obey
dwarf greater than 1000 Kelvin  determined from proper motion and radial velocitywhich depends on luminosity classfrom the point of view of Earth's orbitfrom the point of view of Earthdwhich is diffused out from the hotter core gravitational contraction and or fusionwhich takes place primarily within the corestar catalog starhydrogen, heliumgreater than 0.08 the sun's massmain sequence starStar with mass equal to or less than that of the sun. More generally, any star on or below the main sequence in the Hertzprung-Russell diagram.V 
massive compact halo objectdark halo hypotheticalinversely proportional to the wavelength      MACHO   inversely proportional to its momentumdark matter  hidden massThese are black holes, neutron stars and brown dwarfs, none of which are luminous and all of which are postulated to exist in the halos of galaxies. They are a form of dark matter. uncertainty principle
brown dwarfdark halogreater than 1000 Kelvinhypotheticalinversely proportional to the wavelengthdetermined from proper motion and radial velocitywhich depends on luminosity classfrom the point of view of Earth's orbitfrom the point of view of Earthdwhich is diffused out from the hotter coreMACHOgravitational contraction and or fusionwhich takes place primarily within the corestar cataloginversely proportional to its momentummassive compact halo objecthydrogen, helium1 to 8 percent of the Sunmain sequence starA self-gravitating, self-luminous gaseous object which is not sufficiently massive to result in thermonuclear hydrogen fusion reactions in its core and cannot therefore be considered a star. Such objects are expected to have a mass less than 7% of the Sun's mass and represent a "missing link" between low-mass stars and gas giant planets like Jupiter (at 0.1% of the Sun's mass).Vuncertainty principle

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