Rudolphine Tables

The Rudolphine Tables (Latin: "Tabulae Rudolphinae") consist of a star catalog and planetary tables published by Johannes Kepler in 1627. Named after Emperor Rudolf II, they contain positions for the 1,006 stars measured by Tycho Brahe, and 400 and more stars from Ptolemy and Johann Bayer, with directions and tables for locating the planets of the solar system.

The new tables supersede the older Prussian Tables (Erasmus Reinhold, 1551) and Alphonsine tables (13th century). The purpose of the Rudolphine Tables is essentially to provide an accurate tool for erecting horoscopes,Fact|date=October 2008 including many function tables of logarithms and antilogarithms, and instructive examples for computing planetary positions.

The tables based observations by Tycho Brahe are accurate mostly up to one arc minute, [Uranometria 2000.0, vol 1, page XVII, Tirion, Lovi and Rappaport, 1987, ISBN 0-993396-15-8] and were the first to include corrective factors for atmospheric refraction. [The New Encyclopædia Britannica, 1988, Volume 10, pg. 232]


When publishing the Rudolphine Tables, Kepler was hard-pressed to fight off Tycho's numerous relatives. These relatives throughout the entire publication process were constantly trying to win control of the observations for the profit of them, with the case that Tycho's work should benefit his own family, and not one of Tycho's own competitors. Kepler considered this very unfair, because he and Tycho had been collaborating to work together on the data for many years before Tycho's death, and was responsible for much of the calculations and organization of the data. Nevertheless, Kepler did win control of the tables and published them himself while the Brahe family got none of it.

ee also

* Star cartography


External links

* [ Universitätsbibliothek Kiel – Digiport: Tabulæ Rudolphinæ] - Bartsch version from 1627, with appendices on Schiller's Christian constellations and Bartsch'es own constellation innovations.

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  • Rudolphine — Ru*dolph ine, a. Pertaining to, or designating, a set of astronomical tables computed by Kepler, and founded on the observations of Tycho Brahe; so named from Rudolph II., emperor of Germany. [1913 Webster] …   The Collaborative International Dictionary of English

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  • Johannes Kepler — Infobox Scientist name = Johannes Kepler |175px image width = 175px caption = A 1610 portrait of Johannes Kepler by an unknown artist birth date = Birth date|1571|12|27 birth place = Weil der Stadt near Stuttgart, Germany residence = Baden… …   Wikipedia

  • Tycho Brahe — This article is about the astronomer Tycho Brahe. For other uses, see Tycho Brahe (disambiguation). Tycho Ottesen Brahe Born 14 December 1546 Knutstorp Castle, Scania Died 24 October 1601 (age …   Wikipedia

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