Even if you can demonstrate unanimity, that by itself does not necessarily rise to the level of dogmatic consensus. You'd have to have some indication that they considered it a matter of faith, that they were merely passing on teaching that traces ultimately back to the Apostles. Simple opinining without dissent isn't sufficient.
True. But without a single contrary teaching, literally zero Catholic teaching that earth is a globe, the fe saints' unanimity with scripture has some teeth here. Beyond that, we have the science, the math, the reason, the motive for the lie...plus, the converse teachings are pagan, ridiculous and untenable.
One thing must be fleshed out here. Heliocentrism is a model that includes a globe earth jetting through space in 4 different directions, that stars are worlds, and that the sun is relatively stationary in relation to earth, while the whole enchilada blasts through space in a 500,000 mile per hour from a Big Bang.
Geocentrism teaches earth is flat and stationary with the heavenly lights, sun, moon and stars, which keep time, tell seasons and as scripture says, "for signs", as well as lighting the skies for earth from under the dome that separates heaven from earth.
Somewhere along the way, people became confused and have created a sub-model hybrid of Heliocentrism and Geocentrism where earth is a stationary ball hanging in space.
The most recent characters promoting this hybrid are Robert Sungenis and Rick Delano, both Catholic. Rick Delano is a very staunch anti-bod'er, as well, so I have every respect for that. But they are wrong about earth being a globe. I've written a very telling article showing that Mr. Sungenis is a closet Heliocentric and that his entire premise is sourced from pagans and pagan science.
Here's the link: http://flatearthtrads.forumga.net/t103-critique-of-robert-sungenis-article-against-flat-earth
For further Catholic information on flat earth, the above link is just a small portion of information available on this site:
http://flatearthtrads.forumga.net/