The Yamaneko Group of Comet Observers (YGCO) is a famous group of astronomical observers based in Japan. Founded by K. Ichikawa in 1980, the members have obtained approximately 12,300 astronomic and 6,300 photometric observations. This group maintains the YGCO Chiyoda Station, also based in Japan.
Members
References
Yamaneko Group of Comet Observers Wikipedia(Text) CC BY-SA