Athens, Greece: Solar intruder — 18 February 1850
An unknown body was seen passing in front of the Sun. It was observed and reported by astronomer Schmidt.
Source: R. C. Carrington, “In the 10th number of Professor Wolf’s Mittheilungen iiber die Sonnenflecken…” Monthly Notices of the Royal Astronomical Society 20 (January 1860): 100-1. Case: W405