Jones, H. Spencer (Harold Spencer), 1890- · London E. Arnold & co. · leaf 378
le may be mentioned the star40 Eridani. This star consists of a bright component ofmagnitude 4-5 with a faint component of magnitude 9-2,separated from it by a distance of 82. The faint component isitseK a visual double with a period of 180 years and the smallesteccentricity of any known visual… … SlAR CiJinhs IN Sai:i IIAUiis. DOUBLE AND VARIABLE STARS 331 separation. The period of revolution of the binary about theprimary is of the order of 7,000 years. The orbit of the faintcomponents is nearly as large as Neptunes, whilst that of thefaint about the bright star is about 470 astronomical…
Astronomy
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