Monday, 9 December 2024

Lucky discovery of asteroid with Crossley reflector in 1899

 Asteroid 1899 FD was discovered by chance on December 6th 1899 using the 36 inch Crossley telescope at Lick Observatory.

The region of Hind’s variable nebula or NGC 1555 was photographed on December 6th, 1899, by James Keeler using the 36-inch Crossley reflector at Lick Observatory in America. The telescope was owned by Edward Crosley of Halifax in Yorkshire. Crossley owned the Crossley Carpet factory; he had donated the telescope to Lick.  The nebula is named after the British astronomer John Russell who first discovered it is a peculiar variable nebula; it is believed to be an area where stars are being created.

An exposure of 4 hours on the negative when it was examined the next morning found a very fine faint line. The position of the asteroid could not be determined accurately, another photograph was taken on December 9th, 1899, it was then announced that asteroid 1899 FD had been discovered. The asteroid was very faint at magnitude 17.

 

Today the asteroid is known as 452 Hamiltonia.



                                                     www.theramblingastreonomer.co.uk

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