Christian Pedersen Horrebow (15 April 1718 – 15 September 1776) was a Danish astronomer of the 18th century. He was a son of Peder Horrebow, whom he succeeded as director of the

observatory An observatory is a location used for observing terrestrial, marine, or celestial events. Astronomy, climatology/meteorology, geophysics, oceanography and volcanology are examples of disciplines for which observatories have been constructed. Th ...

associated with the

University of Copenhagen The University of Copenhagen (, KU) is a public university, public research university in Copenhagen, Copenhagen, Denmark. Founded in 1479, the University of Copenhagen is the second-oldest university in Scandinavia, after Uppsala University. ...

. He was himself succeeded by Thomas Bugge.

Neith Neith (, a borrowing of the Demotic (Egyptian), Demotic form , also spelled Nit, Net, or Neit) was an ancient Egyptian deity, possibly of Ancient Libya, Libyan origin. She was connected with warfare, as indicated by her emblem of two crossed b ...

, a supposed moon of

Venus Venus is the second planet from the Sun. It is often called Earth's "twin" or "sister" planet for having almost the same size and mass, and the closest orbit to Earth's. While both are rocky planets, Venus has an atmosphere much thicker ...

, was spotted by Christian Horrebow, while he was studying this planet from 1766 to 1768. He also discovered the periodicity of

sunspot Sunspots are temporary spots on the Sun's surface that are darker than the surrounding area. They are one of the most recognizable Solar phenomena and despite the fact that they are mostly visible in the solar photosphere they usually aff ...

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Astronomy in Denmark
18th-century Danish astronomers 1718 births 1776 deaths Burials at the Church of Our Lady, Copenhagen {{Europe-astronomer-stub