Lewis A. Swift

Lewis A. Swift (February 29, 1820 – January 5, 1913 ) was an American astronomer.

Swift discovered or co-discovered a number of comets, including periodic comets 11P/Tempel-Swift-LINEAR, 64P/Swift-Gehrels, and 109P/Swift-Tuttle (parent body of the Perseids meteor shower). He also discovered comets C/1877 G2, C/1878 N1, C/1879 M1, C/1881 J1, C/1881 W1, C/1892 E1, D/1895 Q1 (a.k.a. D/Swift, whose debris stream Mariner 4 probably encountered on September 15, 1967), C/1896 G1 and C/1899 E1, and co-discovered C/1883 D1 (Brooks-Swift). Note, however, comet 54P/de Vico-Swift-NEAT was discovered by his son Edward D. Swift rather than by him.

He discovered his last comet at the age of 79. He was one of the few people to see Comet Halley at two of its appearances, 76 years apart (see also: External Link).

In 1878 he believed he had observed two Vulcan-type planets (planets within the orbit of Mercury), but he was mistaken.

Apart from comets, he also discovered hundreds of nebulae. One of them is IC 289.

According to Swift, he first became interested in astronomy as young boy after observing the Great Comet of 1843 while on his way to school in Clarkson, New York. His teacher initially dismissed his observation, but three days later the 'discovery' of the comet was announced.

Swift conducted his early observations in Rochester, NY, 'lain out in the snow' in an alley on Ambrose Street or on the roof of Duffy's Cider Mill. Later he gained a patron in the Rochester patent medicine businessman Hulbert Harrington Warner, who financed the building of an observatory for Swift. A fund of $13,000 was raised to purchase a 16-inch telescope for Swift.

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