Approximately how many new nebulae and clusters did William Herschel document between 1786 and 1802?

Answer

2,500

William Herschel, often aided by Caroline, published three catalogs between 1786 and 1802 documenting roughly 2,500 new nebulae and clusters.

Approximately how many new nebulae and clusters did William Herschel document between 1786 and 1802?
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