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physical object > natural object > celestial body > star > high-velocity star > high proper motion star

high proper motion star
subject			fact

high proper motion star	has proper motion high
	is a kind of high-velocity star
high-velocity star	has spatial velocity > 100 km s-1
star	has star surface temperature
	has spectral type
	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 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

Kinds of high proper motion star :

• 61 Cygni (4 facts) - The first star other than the Sun to have its parallax, and hence distance, measured. The star is a double orange dwarf.
• Groombridge 1830 (4 facts) - A famous halo star whose proper motion, discovered in 1841, was then the largest known, displacing that of 61 Cygni.

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