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physical object > natural object > celestial body > star > dwarf > Zeta Ophiuchi

Zeta Ophiuchi
subject			fact

Zeta Ophiuchi	has rotational velocity 396 km s-1
	is a part of Ophiuchus
	has spectral type O9.5 V
	has distance 170 pc
	has definition A reddened O star (a runaway star from the Sco-Cen association) with a high rotational velocity. It is well known for its strong interstellar absorption lines in the visible part of the spectrum.
	is an instance of O star
	is an instance of dwarf
dwarf	has symbol d
	has luminosity class V
	has synonym main sequence star
O star	has lifetime 3 to 6 million years
	has color blue-white
	has surface temperature 35000 K
	has relative abundance rare
	has rotation velocity very high
	has absorption line He II
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 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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