1 , 3 0 8 ▁days ; ▁semi - major ▁axis ▁of ▁ 2 . 3 4   AU ). ▁Its ▁orbit ▁has ▁an ▁ecc ent ric ity ▁of ▁ 0 . 0 4 ▁and ▁an ▁incl ination ▁of ▁ 7 ° ▁with ▁respect ▁to ▁the ▁e cli ptic . ▁ ▁The ▁astero id ▁was ▁first ▁observed ▁as ▁ ▁at ▁the ▁Japanese ▁T aj imi ▁Observ atory ▁ ▁in ▁January ▁ 1 9 9 7 , ▁where ▁its ▁observation ▁arc ▁begins ▁in ▁the ▁following ▁month , ▁about ▁ 2 ▁years ▁prior ▁to ▁the ▁astero id ' s ▁official ▁discovery ▁observation ▁at ▁F ount ain ▁Hills . ▁ ▁N aming ▁▁ ▁This ▁minor ▁planet ▁was ▁named ▁in ▁honor ▁of ▁Australian ▁amateur ▁astronom er ▁John ▁Br ought on ▁( born ▁ 1 9 5 2 ), ▁a ▁pro l ific ▁discover er ▁of ▁minor ▁plan ets ▁who ▁received ▁a ▁" S ho em aker ▁NE O ▁Grant " ▁in ▁ 2 0 0 2 . ▁The ▁approved ▁naming ▁c itation ▁was ▁published ▁by ▁the ▁Minor ▁Planet ▁Center ▁on ▁ 2 6 ▁November ▁ 2 0 0 4 ▁( ). ▁ ▁Phys ical ▁characteristics ▁ ▁Light cur ves ▁▁ ▁In ▁October ▁ 2 0 1 3 , ▁a ▁rot ational ▁light cur ve ▁of ▁Br ought on ▁was ▁obtained ▁from ▁phot ometric ▁observations ▁in ▁the ▁R - band ▁by ▁astronom ers ▁at ▁the ▁Pal om ar ▁Trans ient ▁Factory ▁in ▁California . ▁Light cur ve ▁analysis ▁gave ▁a ▁rotation ▁period ▁of ▁ ▁hours ▁with ▁a ▁bright