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physical object > naked eye object > naked eye star > Antares

Antares (alpha Sco, HR 6134)
subject			fact

Antares	has declination -26 25 55
	has right ascension 16 29 24.4
	has spectral type M1.5Iab-Ib+B4V
	has V magnitude 0.96
	has distance 125 parsecs
	is a part of Scorpius
	has synonym alpha Sco
	has synonym HR 6134
	has B-V magnitude 1.83
	has location inner edge of the Orion spiral arm
	has definition A red M1 Ib supergiant. It has a B3 V companion, which is a radio source.
	is an instance of red supergiant
	is an instance of naked eye star
naked eye star	has been observed for many centuries
	is usually part of asterism
	is a part of celestial sphere
	is a part of Milky Way
	has apparent magnitude brighter than 5
supergiant	has luminosity class I
star	has star surface temperature
	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 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 angular momentum
	has momentum
	has temperature
	has volume
	has extent

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