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physical object > natural object > celestial body > collection of stars > star system > binary star > Luyten 726-8

Luyten 726-8
subject			fact

Luyten 726-8	has distance 2.7 pc
	has definition A binary (M5.5e V, M6e V) (component B is UV Cet) with a very small mass (total mass of system (1974) 0.3 Msun ).
	is an instance of binary star
binary star	has number of stars 2
	has orbital period
star system	has abundance half the stars in the solar neighborhood are members of star systems
star	has star surface temperature
	has spectral type
	has V magnitude
	has B magnitude
	has U magnitude
	has position on celestial sphere from the point of view of Earth
	has parallax from the point of view of Earth's orbit
	has proper motion
	has radiation at surface which is diffused out from the hotter core
	has energy source gravitational contraction and or fusion
	has energy production which takes place primarily within the core
	has surface density which depends on luminosity class
	has surface temperature greater than 1000 Kelvin
	has apparent magnitude
	has absolute magnitude
	has age
	has catalog star catalog
	has material hydrogen, helium
	has velocity determined from proper motion and radial velocity
	has mass greater than 0.08 the sun's mass
celestial body	has spectra
physical object	has location or center of gravity
	has angular momentum
	has momentum
	has temperature
	has volume
	has extent

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