Abstract
THE DOUBLE-STAR PIAZZI XIV, 212.—Piazzi first remarked from his own observations between 1800 and 1809, the large proper motion of this star, which was determined by Argelander in vol. vii. of the Bonn Observations to be 2″.015 annually, in the direction 151°.2. “Der Begleiter 8.4m.,” he adds, “theilt die Bewegung des Hauptstern; beide bilden also ein System, dass eine ziemlich rasche Aenderung der Distanz und des Positionswinkels zeigt. . . . ”The following measures suffice to show the nature of the change in the relative position of the components;—
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Our Astronomical Column . Nature 31, 396 (1885). https://doi.org/10.1038/031396a0
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DOI: https://doi.org/10.1038/031396a0