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|51 Nemausa||22 January 1858|
The asteroid was discovered using the private observatory at the house formerly occupied by Benjamin Valz, who left to become the new director of the Marseille Observatory. He entrusted his former observatory to A. Laurent, who later found the asteroid. The house, at 32 rue Nationale in Nîmes, has a plaque commemorating the discovery .
Valz reported the find in a letter to the Comptes rendus des séances de l'Académie des Sciences  . A. Laurent was awarded the Lalande Prize of the French Academy of Sciences in 1858 for his discovery, along with five other asteroid and comet discoverers    . In addition, asteroid 162 Laurentia was named in his honour.
- (French) Nemausa, Laurent and Valz