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Neptune
Urbain Jean Joseph Le Verrier
Urbain Leverrier found it but John C. Adams first predicted neptune was there.
Jean-Pierre Urbain has written:
'Exogeneity in error correction models' -- subject(s): Economics, Error analysis (Mathematics), Statistical methods
The two co-discoverers were John Couch Adamsand Urbain Jean Joseph Le Verrier who both predictedNeptune's position with remarkable accuracy