It was discovered on 3 November 1994, by Japanese astronomers Yoshio Kushida and Osamu Muramatsu at the Yatsugatake South Base Observatory.
[1] This minor planet was named after the town of Naganuma, located on the island of Hokkaido in northern Japan, where the "Artists Atelier Village" was promoted for many years with more than 20 workshops.
In November 2005, a rotational lightcurve of Naganuma was obtained from photometric observations by Donald Pray at the Carbuncle Hill Observatory (912) on Rhode Island, United States.
Lightcurve analysis gave a rotation period of 2.5835±0.0001 hours with a brightness amplitude of 0.20 magnitude (U=3).
[5][6][7] The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE-albedo of 0.20 and calculates diameter of 4.34 kilometers based on an absolute magnitude of 14.16.