Template:Selected anniversaries/January 17: Difference between revisions

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||1706 – Benjamin Franklin, American publisher, inventor, and politician, 6th President of Pennsylvania (d. 1790)
||1706 – Benjamin Franklin, American publisher, inventor, and politician, 6th President of Pennsylvania (d. 1790)
||Vincenzo Riccati (d. 17 January 1775) was a Venetian mathematician and physicist. He was the brother of Giordano Riccati, and the second son of Jacopo Riccati. Riccati's main research continued the work of his father in mathematical analysis, especially in the fields of the differential equations and physics.


||1786: Comet Encke or Encke's Comet (official designation: 2P/Encke) is a periodic comet that completes an orbit of the Sun once every 3.3 years. (This is the shortest period of a reasonably bright comet; the faint main-belt comet 311P/PANSTARRS has a period of 3.2 years.) Encke was first recorded by Pierre Méchain in 1786, but it was not recognized as a periodic comet until 1819 when its orbit was computed by Johann Franz Encke
||1786: Comet Encke or Encke's Comet (official designation: 2P/Encke) is a periodic comet that completes an orbit of the Sun once every 3.3 years. (This is the shortest period of a reasonably bright comet; the faint main-belt comet 311P/PANSTARRS has a period of 3.2 years.) Encke was first recorded by Pierre Méchain in 1786, but it was not recognized as a periodic comet until 1819 when its orbit was computed by Johann Franz Encke

Revision as of 11:47, 27 November 2017