Quote:
Originally Posted by mithrandir
1269 discovered by John Herschel in 1836 with a 18.7" reflector
1291 discovered by James Dunlop in 1826 with a 9" reflector
There is a slight difference in the details for them, so they probably were not immediately recognised as the same.
I was reading " Early Australian Optical and Radio Observations of Centaurus A" by glenc and others. It has some comments about Dunlop's measurements (his observing condiions were not ideal), so it is quite likely that the coords listed for 1291 are a modern revision.
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Thanks for the comments everyone.
That's an interesting link Andrew. I remember Glen telling me once that Dunlop's measurements were quite often inaccurate, even by the standards of the day. In spite of that he deserved recognition for his discoveries.