MATLAB: How can i plot circular orbit of satellite using app designer

app designerMATLABorbitssatellite

actually i dont even know how to start

Why you want to use an app?

th = linspace(0,2*pi) ; 
R = 1. ;
x = R*cos(th) ; 
y = R*sin(th) ; 
plot(x,y) ;

x = 1:10;
y = sin(x);
plot(app.UIAxes,x,y);

Since you are setting up a circular orbit, just scale the time by the period to get theta. E.g., since one period would be an angle of 2pi,

theta = 2*pi * t / T;

Then just use that and rn for your plot.