Takahashi is a member of the local astronomy club "Hokkaidō Suisei Shōwakusei Kaigi" (北海道彗星・小惑星会議, English: Conference for comets and asteroids Hokkaidō).
[2] With his colleague Kazuro Watanabe, he is credited by the Minor Planet Center with the co-discovery of 22 minor planets between 1989 and 1991,[1] including his lowest numbered discovery, the asteroid 4644 Oumu.
[3] Takahashi and Watanabe also discovered the inner main-belt asteroid 5214 Oozora in 1990, while working at Hokkaido Kitami Observatory.
[4] 5214 Oozora is named for Super Ōzora, the first express train in Hokkaidō.
[5] At Watanabe's suggestion, the main-belt asteroid 4842 Atsushi, discovered by Seiji Ueda and Hiroshi Kaneda at Kushiro in 1989, was named in Takahashi's honor.