ZX Spectrum BASIC: Buggy Orbits

A BASIC program running on the ZX Spectrum which was supposed to plot the orbits of Earth and Venus, but Peter Karpov (http://inversed.ru/) pointed out that I've actually inverted a couple of values so it's incorrect.

10 CLS
20 LET e=0
30 LET v=0
40 LET e=e+0.365256/PI
50 LET v=v+0.224701/PI
60 IF e > 2*PI THEN LET e=0
70 IF v > 2*PI THEN LET v=0
80 LET x0=88+COS(e)*87
90 LET y0=88+SIN(e)*87
100 LET x1=88+COS(v)*62.9238
110 LET y1=88+SIN(v)*62.9238
120 PLOT x0,y0
130 DRAW x1-x0,y1-y0
140 GO TO 40

Видео ZX Spectrum BASIC: Buggy Orbits канала John Metcalf