Variability of 60 Cancri

Details Variability of 60 Cancri Variability of 60 Cancri

May 1880

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1880natur..22q..76b&link_type=abstract

Nature, Volume 22, Issue 552, pp. 76 (1880).

Physics

Scientific paper

I FOUND the above to be a red star in 1874, and the Rev. Mr. Webb, in the same year, made independently a similar observation. It appeared to me of 8 magnitude, as it did also to Mr. Webb. It is numbered 212 in my Red Star, Catalogue, where, considering Årgeländer's previous estimate of about 6 mag., I remarked that it might be variable. This appears now certain, as on April 27 of the present year, and again on May 17, I found the star to be 5 mag. and red-orange in colour. Dr. Copeland, of Dunecht, replying to a letter on the subject, informs me that on referring to various authorities, he finds estimates of the star's magnitude from 5 by Lalande to 7 by Bessel, and in W. B. it is marked 8. As I have seen it in both extremes, the recorded differences cannot be ascribed to inaccuracies in different observers, and I must regard the star as a remarkable variable well worth special notice. It is now passing away from us, but I saw it so late as May 17 in very bright twilight, and its proximity to Alpha gives facilities for estimations of colour and magnitude.

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