It was observed in 1846 following the predicted locations of John Adams and Urbain Le Verrier.
有人指出，在1846年后，亚当斯和勒维耶预测的位置。
2
By looking for discrepancies in Uranus's orbit, Englishman John Couch Adams and Frenchman Urbain Le Verrier each independently calculated the unseen world's mass and position.