original: david w. dunham , the minor planet bulletin , volume 6 , p.13-14 -lrb- december 1978 -rrb- ads archive copy however , careful examination in 1993 , using the hubble space telescope , failed to locate a secondary .
simplifications: careful examination in 1993 , using the hubble space telescope , failed to locate a secondary . david w. dunham , " the minor planet bulletin , volume 6 , page 13-14 , december 1978 , -rrb- " ads archive copy . nonetheless , a thorough study with the hubble space telescope in 1993 did not spot another one . david w. dunham , the minor planet bulletin , volume 6 , p.13-14 -lrb- december 1978 -rrb- ads records copy however , careful examination in 1993 , using the hubble space telescope , failed to locate a secondary . david w. dunham , the minor planet bulletin , volume 6 , p . 13-14 -lrb- december 1978 -rrb- ads storage-related copy however , careful examination in 1993 , using the hubble space telescope , did not locate a secondary . david w. dunham , the minor planet bulletin , volume 6 , p.13-14 -lrb- december 1978 -rrb- ads archive copy however , careful examination in 1993 , using the hubble space telescope , failed to locate a secondary . under careful examination in 1993 with the hubble space telescope , david w. dunham failed to locate a secondary minor planet bulletin . david w. dunham , " the minor planet bulletin " , volune 6 , p.13-14 -lrb- december 1978 -rrb- ads archive copy , however careful examination in 1993 , using the hubble space telescope , failed to locate a secondary . careful examination using the hubble space telescope in 1993 did not locate a secondary