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physical object > naked eye object > naked eye star > Procyon

Procyon (alpha CMi, HR 2943)
subject			fact

Procyon	has declination +05 13 30
	has right ascension 07 39 18.1
	has spectral type F5 IV-V
	has V magnitude 0.38
	has parallax 0.283
	has distance 3.5 pc
	is a part of Canis Minor
	has synonym alpha CMi
	has synonym HR 2943
	has B-V magnitude 0.42
	has orbital period 40 years
	has definition One of the nearest stars, it is the eighth brightest star. An F star. It is a visual binary; its companion is a DF8 white dwarf.
	is an instance of F star
	is an instance of subgiant
	is an instance of visual binary
	is an instance of naked eye star
subgiant	has luminosity class IV
F star	has color yellow-white
	has surface temperature 6000 to 7500 K
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
star	has star surface temperature
	has B magnitude
	has U magnitude
	has position on celestial sphere from the point of view of Earth
	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 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
binary star	has number of stars 2
celestial body	has spectra
star system	has abundance half the stars in the solar neighborhood are members of star systems
physical object	has location or center of gravity
	has angular momentum
	has momentum
	has temperature
	has volume
	has extent

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