4 5 , ▁almost ▁ 5 6 ▁years ▁prior ▁to ▁its ▁official ▁discovery ▁observation ▁at ▁Soc or ro . ▁ ▁Phys ical ▁characteristics ▁▁▁ ▁is ▁an ▁assumed ▁C - type ▁astero id . ▁Its ▁V – I ▁color ▁index ▁of ▁ 0 . 9 5 ▁is ▁typical ▁for ▁most ▁D - type ▁astero ids , ▁the ▁dominant ▁spectral ▁type ▁among ▁the ▁Jup iter ▁tro j ans . ▁ ▁Rot ation ▁period ▁▁ ▁In ▁April ▁ 2 0 0 7 , ▁a ▁rot ational ▁light cur ve ▁of ▁ ▁was ▁obtained ▁from ▁phot ometric ▁observations ▁by ▁Lawrence ▁Mol nar ▁at ▁Cal vin ▁University , ▁using ▁the ▁Cal vin - Re h ob oth ▁Rob otic ▁Observ atory ▁in ▁New ▁Mexico . ▁Light cur ve ▁analysis ▁gave ▁a ▁well - defined ▁rotation ▁period ▁of ▁ ▁hours ▁with ▁a ▁high ▁bright ness ▁variation ▁of ▁ 0 . 5 6 ▁magnitude ▁( ). ▁A ▁high ▁amplitude ▁is ▁indic ative ▁of ▁a ▁non - s pher ical ▁shape . ▁ ▁Diam eter ▁and ▁al bed o ▁▁ ▁According ▁to ▁the ▁surve ys ▁carried ▁out ▁by ▁the ▁Japanese ▁Ak ari ▁satellite ▁and ▁the ▁NE OW I SE ▁mission ▁of ▁NASA ' s ▁W ide - field ▁Inf ra red ▁Survey ▁Explorer , ▁ ▁measures ▁between ▁ 6 1 . 6 8 ▁and ▁ 6 3 . 6 3 ▁kilom eters ▁in ▁diameter ▁and ▁its ▁surface ▁has ▁an ▁al bed o ▁between ▁ 0 . 0 6 1 ▁and ▁ 0 . 0 9 1 . ▁The ▁Coll abor ative