Comet Ikeya, or Ikeya's Comet may refer to any of the seven comets discovered by Kaoru Ikeya below: 153P/Ikeya–Zhang, the only long-period comet that is given a periodic number. 332P/Ikeya–Murakami C/1963 A1 (Ikeya) C/1964 N1 (Ikeya) C/1965 S1 (Ikeya–Seki), also known as the Great Comet of 1965 C/1966 R1 (Ikeya–Everhart) C/1967 Y1 (Ikeya–Seki)