AD 1801

2 records placed in AD 1801; regions: Americas, Europe.

Placed in AD 1801 by a source

Each record sits in this year because its source places it here, or because a conversion of the source’s date, stated on the record, does. That is a placement, not a settled date, and not a complete account of the year. “No region assigned” means the collection has not fixed where the act took place. How to read a record

AD 1801Placed in a yearAmericasPolitics and institutions

Jefferson delivers first inaugural address at Washington

Richardson’s edition presents Jefferson addressing assembled fellow citizens at Washington in his first inaugural address, dated March 4, 1801.

Limits: James D. Richardson edition, Project Gutenberg 10893, volume I, part 3. The heading supplies the location and the closing date supplies the date; the address has no closing signature. The neighboring March 2 letter announces a proposed oath ceremony, a separate act rather than evidence that its arrangements were carried out. No contradictory account is supplied.

Source: Richardson, Messages and Papers of the Presidents, Thomas JeffersonRead the source

AD 1801Placed in a yearEuropeCulture and knowledge

Piazzi’s discovery of Ceres at Palermo

The NASA/JPL Small-Body Database attributes the discovery observation of Ceres at Palermo on 1 January 1801 to Piazzi, G.

Limits: Catalogue attribution referencing DISCOVERY.DB, not firsthand testimony or a claim of the first-ever human sighting. Both files agree on date, discoverer and city; no observatory is specified.

Source: JPL Small-Body Database discovery circumstancesRead the source