The asteroid's observation arc begins 50 years prior to its discovery, with a precovery taken at Lowell Observatory in 1931.
[10] A rotational lightcurve for this asteroid was obtained from photometric observations made at the Australian Oakley Southern Sky Observatory (E09) in September 2014.
[8] According to the 2015/16 NEOWISE mission results of NASA's space-based Wide-field Infrared Survey Explorer, Geisei measures 5.21 and 5.23 kilometers in diameter and its surface has an albedo of 0.34 and 0.38, respectively.
[3] This minor planet is named after the small Japanese village of Geisei, where the discovering observatory is located.
Geisei is situated near the city of Kōchi, after which Tsutomu Seki's first discovery, the asteroid 2396 Kochi, is named.