Augsburg, Germany — 12 February 1820
Trans-solar traveler
A circular well-defined spot, with an orange-gold tint, not seen again the same evening, is recorded to have been seen by two independent observers, viz. Stark and Steinhubel. It crossed the sun in about 5 hours.
Source: R. C. Carrington, “On some previous observations of supposed planetary bodies in transit over the Sun,” Monthly Notices of the Royal Astronomical Society 20 (March 1860): 192-4. 399. Case: W351