Janus waxaa aqoonsaday Audouin Dollfus 15kii Diseembar 1966 waxaana la siiyay magaca ku meel gaarka ah S/1966 S 2. Horay, Jean Texereau ayaa sawiray Janus 29kii Oktoobar 1966 isagoon ogayn. 18kii Diseembar, Richard Walker wuxuu arkay shay ku yaal isla goobta Janus, laakiin booskiisa lama waafajin karo aragtidii hore. Laba iyo toban sano ka dib, bishii Oktoobar 1978, Stephen M. Larson iyo John W. Fountain waxay ogaadeen in aragtidii 1966 ay ugu fiicnaayeen laba shay oo kala duwan (Janus iyo Epimethe) oo wadaagaya meelo aad u la mid ah, Walker ayaa hadda lagu tiriyaa helitaanka Epimethe. Voyager 1 wuxuu xaqiijiyay qaabeynta meeraha 1980kii.
Audouin Dollfus