I am happy to have finally finished the translation! I may update it if I notice any further mistakes, but here it is anyhow. I would like to revisit this when my language skills improve, but for now I think at least having an intelligible version of an ancient text is a precious thing. So much thanks to @cdpatton for reviewing the text and providing terminology additions and many grammar fixes.
I went back through it one final time to make some changes to be more faithful to the formatting of the original text.
Now, the next question is, how can we follow ou should accept, hold, and distribute it widely as śākyamuni urges us to do? 
aṭānāṭīya sūtra.pdf (181.4 KB)