tracking spinning 3d ball

Hey everyone, I’m working on a product video in Fusion and running into some issues stabilizing a 3D object. I’m hoping someone here can point me in the right direction.

The subject is a spherical/cylindrical protein container (think supplement tub) shot in front of a green screen. The object moving around slightly, but not perfectly, and I’d like to stabilize it so it remains locked in the center of the frame — ideally so I can zoom, pan, and add effects in post.

Here’s the challenge:
• The container label changes as it rotates, which throws off tracking.
• Planar tracking tends to lock onto the label itself rather than the container’s overall motion, and it struggles when the label changes mid-rotation.
• Point tracking or using a single center point also fails when the object rotates, since it loses the track or shifts in space.
• I’ve tried both the standard Tracker node and Planar Tracker, but both fall apart as the object rotates and the label changes.

I’ve already keyed out the green screen without issue, but I’m stuck on finding a reliable way to stabilize the object as a whole, rather than just a surface feature.

Is there a better method (maybe 3D camera tracking or another stabilization trick) to track and stabilize a rotating cylindrical object like this? Any tips or node setups would be massively appreciated.

Thanks in advance!

Track the alpha channel created from keyer, black-white image has no surface texture so you can track the silhouette shape.

Yeah. You should be able to track alpha channel.