Abstract
THE PARALLAX OF ∑ 2398.—In the Astronomische Nachrichten. No. 2676, Dr. E. Lamp, of Kiel, has published a determination of the parallax of the brighter component of this pair (to which his attention was attracted by their large proper motion) referred to two neighbouring stars derived from a series of differences of declination observed with the refractor and filar micrometer of tne Kiel Observatory between February 1883 and April 1885; the value of the parallax deduced from this discussion being 0″.34. Wishing to verify this result, Dr. Lamp has made with the same instrument, between May 1885 and March 1887, a further series of measures of differences of declination of each component of ∑ 2398 (= D.M. + 59°, No. 1915, mags. 8.2 and 9.0 respectively) referred to three comparison-stars: viz. D.M. + 59°, No. 1911, mag. 7.0; D.M. + 59°, No. 1913, mag. 9.4; and D.M. + 59°, No. 1918, mag. 7.8; and has published the results of his discussion of these measures in Nos. 2807–8 of the above-mentioned periodical. The following tabular statement gives for each series of observations the resulting parallax deduced from the differences of declination between each component of the double star and each of the above-mentioned comparison-stars:—
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Our Astronimical Column . Nature 36, 616 (1887). https://doi.org/10.1038/036616a0
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DOI: https://doi.org/10.1038/036616a0