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physical object > natural object > celestial body > collection of stars > star system > binary star > 17 Leporis

17 Leporis
subject			fact

17 Leporis	has companion M1 III
	has primary A0 V
	is a part of Lepus
	has definition A close binary system (A0 V, M1 III) with a shell-like spectrum indicating that mass transfer may be occurring from the late-type companion onto the A0 primary.
	is an instance of shell star
	is an instance of binary star
shell star	has spectral type B star, A star, F star
binary star	has number of stars 2
	has orbital period
emission line star	has emission line
star system	has abundance half the stars in the solar neighborhood are members of star systems
star	has star surface temperature
	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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