Abstract
THE above star, which I found on the 22nd of May last, and which then appeared of the 9th magnitude, and reached 8 m. on June 8, seems now no more than 12 m. Estimations of very small magnitudes are, of course, very difficult, but I believe I am not under the mark in saying 12 m., as I found the star not easy with a 41/2.inch O.G. At the same time its deep crimson seemed very striking by glimpses, and in its present state it if, perhaps, the smallest among the stars whose red colour has been observed. It will probably have to be classed among the most remarkable variables.
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BIRMINGHAM, J. The New Red Star in Cygnus. Nature 25, 198 (1881). https://doi.org/10.1038/025198b0
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DOI: https://doi.org/10.1038/025198b0
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