Variable (?) Star in Sextans

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

THE following may be of interest to the readers of your Astronomical Column :- About 2½° north of, and a little preceding λ Hydræ (4mag.), is a star marked 5th mag. in Harding's large Atlas Novus Cœlestis (1822). This is now invisible to the naked eye, and of about mag. 7. It is 19662 in Lalande's Catalogue, in which it is rated at 4½ mag. It seems difficult to understand how excellent observers like Harding and Lalande could have made a mistake of 2 magnitudes in the estimation of a star's brightness, particularly as it is closely preceded by a 7½ mag. star (Lalande, 19646). So that probably this star has faded since 1822. Its position for the beginning of the present year is in R.A. 9h. 57m. 30.46s., and N.P.D. 98° 58' o''.42.

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