Case file · Cosmic event
Halley's comet in the Seongbyeon Deungnok
Joseon's Gwansanggam observers sketched and timed Halley's comet night after night in 1759, the return Edmond Halley had predicted.
1759 CE · 37.58, 126.99 · status: official
The account
The 'Records of Star Changes' (Seongbyeon Deungnok) for 1759 hold about two weeks of position notes and drawings. A 2017 study in the Journal of Astronomical History and Heritage reviewed the observers and their accuracy.