Stellar parallax is a well-established astronomical observation that directly demonstrates Earth's orbital motion around the Sun, requiring no citation as it is basic textbook science.
The claim is a foundational, well-known empirical fact taught in elementary astronomy and physics. None of the retrieved papers specifically address stellar parallax as proof of heliocentrism, as this is established common knowledge. Therefore, following the instructions for common knowledge, no citations are placed and the verdict is set to COMMON_KNOWLEDGE.