David W. Dunham, The Minor Planet Bulletin, Volume 6, p. 13 - 14 (December 1978) ADS archive copy However, careful examination in 1993, using the Hubble Space Telescope, failed to locate a secondary.
David Dunhams Minor Planet Bulletin, Volume 6, p. 13-14 archived it, but after careful study in 1993, The Hubble Space Telescope could not find another.