Asteroid 6498, Ko, was discovered on October 26, 1992 by Kin Endate and Kazuro Watanabe at Kitami, Hokkaido, Japan. It has a period of 3 years, 163 days.
It was named for Japanese astronomer Ko Nagasawa (born 1932), a specialist in meteors.
The Japanese given name Ko means "[devoted] child" and is often found in Japanese female names as a suffix.
The meaning of asteroid Ko seems to be: children, relating to children, childlike, childish, simple, fertility, infantilization, to patronize, condescend or oppress; also, possibly, meteors and meteor showers.
The glyph for Ko is mine and consists of the Japanese kanji character for the word.