location unknown: Sighting of Vulcan — 12 March 1849
Astronomer Sidebotham reports an object crossing the disk of the sun. This is one of the
observations judged reliable enough by Le Verrier to compute his orbit of Vulcan, the supposed intra-mercurial planet.
Source: E. Dunkin. “The suspected Intra-Mercurial planet,” Monthly Notices of the Royal Astronomical Society 37 (February 1877): 229-30. Case: W400