. ▁' s ▁ecc ent ric ▁orbit ▁takes ▁it ▁out ▁past ▁the ▁Earth , ▁where ▁it ▁has ▁enc oun ters ▁of ▁about ▁ 0 . 1 5 ▁to ▁ 0 . 2 0 ▁A U ▁about ▁every ▁ 3 ▁to ▁ 5 ▁years ▁around ▁October – Nov ember . ▁It ▁was ▁discovered ▁during ▁its ▁ 1 9 8 9 ▁encounter ▁and ▁was ▁about ▁ 0 . 1 7 ▁A U ▁away ▁at ▁the ▁time . ▁Further ▁observations ▁were ▁made ▁in ▁October ▁ 2 0 0 2 ▁and ▁during ▁the ▁most ▁recent ▁close ▁encounter ▁in ▁November ▁ 2 0 0 7 . ▁ ▁Phys ical ▁characteristics ▁▁ ▁In ▁the ▁S MA SS ▁tax onomy , ▁ ▁is ▁character ized ▁as ▁a ▁S q - sub type ▁that ▁fall ▁into ▁the ▁bro ader ▁class ▁of ▁st ony ▁S - type ▁astero ids . ▁ ▁Number ing ▁and ▁naming ▁▁ ▁This ▁minor ▁planet ▁was ▁number ed ▁by ▁the ▁Minor ▁Planet ▁Center ▁on ▁ 2 2 ▁June ▁ 2 0 0 5 . ▁As ▁of ▁ 2 0 1 8 , ▁it ▁has ▁not ▁been ▁named . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Ast ero id ▁Light cur ve ▁Database ▁( LC DB ), ▁query ▁form ▁( info ) ▁ ▁Ast ero ids ▁and ▁com ets ▁rotation ▁curves , ▁C d R ▁– ▁Observ atoire ▁de ▁Gen ève , ▁Ra oul ▁Be hr end ▁ ▁List ▁Of ▁A ten ▁Minor ▁Plan ets ▁( by ▁design ation ) ▁– ▁Minor ▁Planet ▁Center ▁▁▁▁▁ ▁Category : A ten ▁astero