Quran mentions orbit of the solar system

 21:33

And it is He who created the night and the day and the sun and the moon; all [heavenly bodies] in an orbit are swimming.

This does not say that the sun orbits the earth, but it does say both the sun and moon are floating/swimming in their own orbit, but doesn't say explicitly what they are oribiting. Interestingly, it says the sun is orbiting, which is a modern scientific fact that couldn't have been known by Prophet Muhammed (pbuh) who was illiterate and over 1400 years ago.

Translation: Saheeh International | Meccan