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physical object > natural object > celestial body > star > late star > M star > Kapteyn's star

Kapteyn's star (HD 33793, CD -45 1841)
subject			fact

Kapteyn's star	has discover Jacobus Kapteyn
	has spectral type M0
	has distance 13 light-years
	has radial velocity +242 km s-1
	has synonym HD 33793
	has synonym CD -45 1841
	has discovery date 1897
	has definition A nearby high-velocity M0 subdwarf that is both the nearest halo star to the Sun and the nearest star that orbits the Galaxy backward.
	is an instance of M star
	is an instance of subdwarf
subdwarf	has symbol sd
	has luminosity class VI
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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