An SVG scene uses D3 v5 to animate a gray triangle orbiting a yellow central point without rotating itself. The animation runs on a timer that updates a `rotate` transform on an outer group and applies an equal negative rotation to an inner `#g_rotateBack` group, canceling the triangle’s spin. Red and pink reference dots mark the orbit radius and triangle centroid. The drawing includes horizontal grid lines and uses nested `g` elements with explicit transforms for position and counter-rotation.