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The Return of Winnecke’s Periodical Comet.This celebrated comet was first discovered by Pons, a French Astronomer, on June 12, 1819. On calculating the elements of the orbit from the observations at this appearance, Professor Kncke found that the comet was moving in an elliptic orbit with a period of 5A years. Thirty-nine years, however, elapsed before it was again seen. On Match 8, 1858, Dr. Winnecke. of Bonn, discovered a small comet, whose elements were found to resemble those computed by Encke for the comet of 1819. The comet was not seen at its next return to perihelion, but Dr. Winnecke was again successful in discovering it on April 9, 1869. It was found at the return, in 1875, by Borelh, at Marseilles. At the next return it escaped detection. but in 1886 the observations of it were very successful, those at the Royal Observatory, Cape of Good Hope, and Windsor, being specially commended for their number and excellence by Professor von Haerdtl. by means of whose ephemeris the comet was discovered at this return. One important result derived Irom the observations of 1886 was a new and satisfactory determination of the 'mass of the planet Jupiter. Professor von Haerdtl provided an ephemeris for the return in 189a. and the comet was accordingly observed at several stations in the southern hemisphere before its perihelion passage on July 1st. After perihelion passage it came into conjunction with the sun, and, so far as I can learn, it was subsequently observed at Windsor only. These observations extended over the period from July 17th to September 27th, 189a. In No 3447 of the Astronomiscbe Nachrichten,” recently to hand, there is an ephemeris by Herr C. Hille-brand, of Vienna, for the comet's re appearance in 1807-8 In investigating the orbit at the return in 1892, he employs six normal places, the first three of which depend on observations at Algiers, Berlin, Munich. Washington and Vienna ; and the last three on the series of positions obtained at Windsor. It appears from the ephemeris that at this date (November 9th), the comet is in R A. 12I1. 47m Declin 8° N , its distance from the sun and earth being respectively 181 and 239 millions of miles. Its nearest approach to the earth, 125 millions of miles, will occur on February 27th next, in R A -igh. 34m, and Declin.-14° S , and it will pass through pcihelion at a distance of .86 millions of miles from the sun on March 21st next It will be very much fainter than at the last return—John Tebbutt. Windsor, November yih, 1897Commercial.
Newspaper Details
Windsor and Richmond Gazette
Windsor, New South Wales, AU
Sat, Nov 13, 1897
Page 4
Full Page
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USA 06 Dec 2022
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