I want to know the answer to the following question:
When did Neptune complete it's first barycentric orbit since it's discovery?
All the background I'm provided with is that "On 11 July 2011, Neptune completed its first full barycentric orbit since its discovery in 1846, although it did not appear at its exact discovery position in the sky, because Earth was in a different location in its 365.26-day orbit.". Is that enough to answer the question?
Answer: yes