Excerpt from Positions of Fundamental Stars Deduced From Observations Made at the U. S. Naval Observatory Between the Years 1862 and 1867
It appears, then that in the case supposed, that in which the groups are of a uniform length of six hours, and the clock stars are scattered uniformly through each group, each revision of the fundamental catalogue will tend to diminish the error of single period by rather less than one-fifth, and that of double period by more than one-half. The latter will therefore be cut down much more rapidly than the former.
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HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LX-9780656212910
Quantità: 15 disponibili