This alludes to reports that the Dogon knew of another star in the Sirius system, "Ęmmę Ya", or a star "larger than Sirius B but lighter and dim in magnitude". In 1995, gravitational studies indeed showed the possible presence of a brown dwarf star orbiting around Sirius (a Sirius-C) with a six-year orbital period. A more recent study using advanced infrared imaging concluded that the probability of the existence of a triple star system for Sirius is "now low" but could not be ruled out because the region within 5 AU of Sirius A had not been covered.