Recorded Sightings
- 240 BC,
- 164 BC,
- 86 BC,
- 11 BC,
- 66 AD,
- 141 AD,
- 218 AD,
- 295 AD,
- 347 AD,
- 451 AD,
- 530 AD,
- 607 AD,
- 684 AD, recorded in the Nuremberg Chronicles
- 837 AD,
- 912 AD,
- 989 AD,
- 1066 AD,
- 1145 AD,
- 1222 AD,
- 1301 AD,
- 1378 AD,
- 1456 AD,
- 1531 AD,
- 1607 AD,
- 1682 AD,
- 1759 AD, - March 13, with the scientific designation 1P/1758 Y1, 1759 I
- 1835 AD, - November 16, with the scientific designation 1P/1835 P1, 1835 III
- 1910 AD, - April 20, with the scientific designation 1P/1909 R1, 1910 II, 1909c
- 1986 AD, - February 9 1986, with the scientific designation 1P/1982 U1, 1986 III, 1982i
- Next perihelion predicted to be on July 28 2061