Assertion: celestial sphere's star | /r/HasProperty | spectroscopic binary system
Facets:
value: with a highly eccentric orbit
type: OTHER
Source sentences:
text: Slipher measured the star’s radial velocity with the Lowell spectrograph from 1902 to 1904 and concluded that the star was a spectroscopic binary system with a highly eccentric orbit and that the components completed an orbit every 100 days or so.