C/1807R1, also known as the Great Comet of 1807, is a long-period comet. It was visible to naked-eye observers in the northern hemisphere from early September
C/2020 F3 (NEOWISE) or Comet NEOWISE is a long period comet with a near-parabolic orbit discovered on March 27, 2020, by astronomers during the NEOWISE
discovered the "Great Comet of 1811" (C/1811 F1), and independently co-discovered the "Great Comet of 1807" (C/1807R1). In attempting to measure the rotation
serious illness contracted during the observations of the great comet C/1807R1. Cassella, Giuseppe (1788). Dei principali movimenti e fenomeni de' corpi