Janus akaonekwa naAudouin Dollfus musi wa15 Zvita 1966 uye akapiwa zita rekuti S/1966 S 2. Kare, Jean Texereau akanga atora Janus mufananidzo musi wa29 Gumiguru 1966 asina kuzviziva. Musi wa18 Zvita, Richard Walker akaona chimwe chinhu chiri mumhepo imwechete saJanus, asi chinzvimbo chake chakanga chisingagoni kuyananiswa nekucherechedzwa kwakapfuura. Makore gumi nemaviri gare gare, muna Gumiguru 1978, Stephen M. Larson naJohn W. Fountain vakaona kuti kucherekedzwa kwa1966 kwakatsanangurwa zvakanakisa nezvinhu zviviri zvakasiyana (Janus naEpimethe) vachigovana matunhu akafanana, Walker zvino anozivikanwa nekuwanikwa kweEpimethe. Voyager 1 yakasimbisa iyi orbital configuration muna 1980.
Audouin Dollfus