Named in honor of Nha Il-Seong (b. 1932), professor emeritus at Yonsei University, Korea, on the occasion of the dedication of his Museum of Astronomy in Yecheon. Professor Nha's major works include photometry of close binary stars, the discovery of the apsidal motion in the CW Cep system and contributions to the history of Asian astronomy. He has served as president of the Korean Astronomical Society and director of Yonsei University Observatory. Name proposed by the discoverer following a suggestion by K. Hurukawa. Citation by I. Hasegawa.