</s> ▁ 3 7 9 0 ▁Ray w il son , ▁prov is ional ▁design ation ▁, ▁is ▁a ▁carbon ace ous ▁Th em ist ian ▁astero id ▁from ▁the ▁outer ▁regions ▁of ▁the ▁astero id ▁bel t , ▁approximately ▁ ▁in ▁diameter . ▁It ▁was ▁discovered ▁on ▁ 2 6 ▁October ▁ 1 9 3 7 , ▁by ▁astronom er ▁Karl ▁Rein m uth ▁at ▁the ▁Heidel berg - K önig st u hl ▁State ▁Observ atory ▁in ▁Heidel berg , ▁Germany . ▁The ▁C - type ▁astero id ▁has ▁a ▁rotation ▁period ▁of ▁ 4 . 6 5 ▁hours . ▁It ▁was ▁named ▁for ▁English ▁phys ic ist ▁Raymond ▁Wilson . ▁ ▁Or bit ▁and ▁classification ▁▁ ▁Ray w il son ▁is ▁a ▁Th em ist ian ▁astero id ▁that ▁belongs ▁to ▁the ▁Th em is ▁family ▁( ), ▁a ▁very ▁large ▁family ▁of ▁carbon ace ous ▁astero ids , ▁named ▁after ▁its ▁parent ▁body , ▁ 2 4   Th em is . ▁For ▁no ▁good ▁reason , ▁it ▁has ▁also ▁been ▁considered ▁a ▁member ▁of ▁the ▁E os ▁family . ▁ ▁It ▁or bits ▁the ▁Sun ▁in ▁the ▁outer ▁astero id ▁bel t ▁at ▁a ▁distance ▁of ▁ 2 . 6 – 3 . 7   AU ▁once ▁every ▁ 5 ▁years ▁and ▁ 8 ▁months ▁( 2 , 0 5 6 ▁days ; ▁semi - major ▁axis ▁of ▁ 3 . 1 6   AU ). ▁Its ▁orbit ▁has ▁an ▁ecc ent ric ity ▁of ▁ 0 .