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physical object > natural object > celestial body > star > late star > K star

K star
subject			fact

K star	has color orange to red
	has surface temperature 3600 to 5000 K
	has definition Cool star with spectral type K with spectra resembling those of sunspots, in which the hydrogen lines have been greatly weakened. The HK lines (q.v.) reach their greatest intensity. Strongest lines are Ca I (4227 Å) and the G-band (4303 Å).
	is a kind of late star
late star	has spectral type cooler than G2
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 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 K star :

• Aldebaran (13 facts) (alpha Tau, HR 1457) - A K5 III subgiant (a foreground star in the Hyades). It has a faint M2 V companion. It is now known to be slowly and irregularly variable.
• Alpha Antliae (10 facts) (HR 4104)
• Alpha Apodis (10 facts) (HR 5470)
• Alpha Arietis (10 facts) (HR 617)
• Alpha Cassiopeiae (10 facts) (HR 168)
• Alpha Horologii (10 facts) (HR 1326)
• Alpha Hydrae (11 facts) (HR 3748, Alphard)
• Alpha Indi (10 facts) (HR 7869)
• Alpha Lyncis (10 facts) (HR 3705)
• Alpha Monocerotis (10 facts) (HR 2970)
• Alpha Phoenicis (10 facts) (HR 99)
• Alpha Scuti (10 facts) (HR 6973)
• Alpha Serpentis (10 facts) (HR 5854)
• Alpha Trianguli Australis (10 facts) (HR 6217)
• Alpha Tucanae (10 facts) (HR 8502)
• Arcturus (13 facts) (Alpha Boötis, HR 5340) - A beautiful orange star that is the brightest in the constellation Bootes and the fourth brightest in the night sky. It lies 34 light-years away and is a member of the thick-disk population. Historically, Arcturus is famous because it was one of the first stars to have its proper motion measured., An old subgiant disk star (K2 IIIp, m_v = 0.06) about 11 pc distant.
• Beta Arae (10 facts) (HR 6461)
• Beta Cancri (10 facts) (HR 3249)
• Beta Ceti (10 facts) (HR 188)
• Beta Volantis (10 facts) (HR 3347)
• dKe star (3 facts) - K dwarf with hydrogen emission lines.
• Epsilon Eri (7 facts) - In 1973 van de Kamp announced that this star has a planet-like object in orbit around it at a distance of about 8 AU and with a period of about 25 years.
• Epsilon Pegasi (10 facts) (HR 8308)
• Gamma Draconis (10 facts) (HR 6705)
• HR 4247 (9 facts)
• Nu Octantis (10 facts) (HR 8254)
• Pollux (13 facts) (beta Gem, HR 2990) - A K0 III star.

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