1 7 ▁and ▁an ▁incl ination ▁of ▁ 0 ° ▁with ▁respect ▁to ▁the ▁e cli ptic . ▁The ▁body ' s ▁observation ▁arc ▁begins ▁at ▁Heidel berg , ▁the ▁night ▁after ▁its ▁official ▁discovery ▁observation . ▁ ▁Phys ical ▁characteristics ▁▁ ▁Pan - ST AR RS ▁phot ometric ▁survey ▁has ▁character ized ▁it ▁as ▁a ▁common , ▁carbon ace ous ▁C - type ▁astero id , ▁which ▁is ▁also ▁the ▁overall ▁spectral ▁type ▁of ▁the ▁Th em is ▁family . ▁ ▁Rot ation ▁period ▁▁ ▁In ▁October ▁ 2 0 1 0 , ▁a ▁rot ational ▁light cur ve ▁of ▁Ray w il son ▁was ▁obtained ▁in ▁the ▁R - band ▁from ▁phot ometric ▁observations ▁by ▁astronom ers ▁at ▁the ▁Pal om ar ▁Trans ient ▁Factory ▁in ▁California . ▁Light cur ve ▁analysis ▁gave ▁a ▁rotation ▁period ▁of ▁ 4 . 6 5 4 ▁hours ▁with ▁a ▁bright ness ▁variation ▁ ▁of ▁ 0 . 3 0 ▁magnitude ▁( ). ▁A ▁previous ▁measurement ▁by ▁Brazil ian ▁astronom ers ▁gave ▁a ▁period ▁of ▁ 4 . 8 6 ▁hours ▁and ▁an ▁amplitude ▁of ▁ 0 . 3 1 ▁magnitude ▁( ). ▁ ▁Diam eter ▁and ▁al bed o ▁▁ ▁According ▁to ▁the ▁survey ▁carried ▁out ▁by ▁the ▁NE OW I SE ▁mission ▁of ▁NASA ' s ▁W ide - field ▁Inf ra red ▁Survey ▁Explorer , ▁Ray w il son ▁measures ▁between ▁ 1 0 . 3 5 ▁and ▁ 1 4 . 0 2 8 ▁kilom eters ▁in ▁diameter ▁and ▁its ▁surface