Seginus (also Segin, Ceginus or Haris) is the name for the star Gamma Boötis. Seginus is approximately 85 light-years away from Earth. It belongs to the spectral class A7III. Seginus is a variable star. The name Seginus resulted from Latinization of an Arabic form of the Greek name of the constellation of Boötes (Theguius). The name Haris comes from the Arabic name of the constellation of Boötes, Al Haris Al Sama, which means "the guard". A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... In linguistics, romanization or latinization is a system for representing a word or language with the Roman (Latin) alphabet, where the original word or language used a different writing system. ... Jump to: navigation, search The Arabic language (; , less formally, ) is the largest member of the Semitic branch of the Afro-Asiatic language family (classification: South Central Semitic) and is closely related to Hebrew and Aramaic. ...
Gamma Cephei, a star having a diameter of six times that of our Sun, and producing a brightness equivalent to 11.5 times that of our Sun, has been studied for the possibility of a companion using radial velocity measurements.
Tau Bootis, which is a star similiar to our sun, has been observed 19 times for doppler velocity perturbations.
In addition, the radius of the companion is considered to be about 1.2 times the radius of Jupiter with a derived temperature of 1,400 K. Baliunas and her associates (2) feel that the velocity perturbations strongly suggest a planetary companion that is 0.046 astronomical units from Tau Bootis.
Fekel, F. and Henry, G. W., "The Orbit and Pulsation Periods of the Gamma Doradus Variable HR 6844 = V2502 Ophiuchi," Astronomical Journal 125, 2156, 2003.
Henry, G. and Fekel, F. C., "Six New Gamma Doradus Stars," Publications of the Astronomical Society of the Pacific 114, 988, 2002.
Robinson, R. R., Smith, M. A., and Henry, G. W., "X-ray and Optical Variations in the Classical Be Star Gamma Cassiopeia: The Discovery of a Possible Magnetic Dynamo," Astrophysical Journal 575, 435, 2002.
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