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

visual binary comparison table

Subject	has right ascension	has spectral type	has declination	is part of	has extent	has age	has surface temperature	has orbital period	is an instance of	has velocity	has surface density	has star surface temperature	has V magnitude	has parallax	has position on celestial sphere	has color	has been observ	has location	has B-V magnitude	has angular momentum	has distance	has radiation at surface	has B magnitude	has temperature	has abundance	has spectra	is usually part of	has proper motion	has energy source	has energy production	has catalog	has absolute magnitude	has U magnitude	has volume	has momentum	has apparent magnitude	has material	has mass	has synonym	has definition	has luminosity class	has number of star
Procyon	07 39 18.1	F5 IV-V	+05 13 30	Milky Way			6000 to 7500 K	40 years	naked eye star	determined from proper motion and radial velocity	which depends on luminosity class		0.38	0.283	from the point of view of Earth	yellow-white	for many centuries	or center of gravity	0.42		3.5 pc	which is diffused out from the hotter core			half the stars in the solar neighborhood are members of star systems		asterism		gravitational contraction and or fusion	which takes place primarily within the core	star catalog					brighter than 5	hydrogen, helium	greater than 0.08 the sun's mass	HR 2943	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.	IV	2

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