Dudley Observatory, American Astronomical Society, American Institute of Physics · New York [etc.] American Institute of Physics [etc.] · leaf 180
he observations made since1898 can be represented by a straight line. It will beseen, however, that the position angle is diminishing at auniform rate, while the distance is essentially stationary.Tliis could only approximately occur for a short time inrectilinear motion when the stars were at… … The mean angular motion previous to 1898 was about 5°.Since then it has been between 3° and 4°. The change ofangle between 1902 and 1903 seems too large, but themeasures appear to be good in both years, and they areverified by Burnhams measures. From the observations of AC Mr. Doolittle…
Astronomy
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