how can I make the small circle head in circle around the big circle(0,0) in netlogo? like this

the programming language use in netlogo

to setup

clear-all

create-turtles 1 [

set shape"circle"

set size 5

]

create-turtles 1 [

set shape"cylinder"

setxy random-xcor random-ycor

]

end

to go

(here dont know what should i do)

end

setup