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In a period of anomaly the planet, initially at the apogee on its epicycle, returns to it and travels 6 physical signs the intermediary tabulated values of A (t - t0, k) represent the increment of the true longitude at the beginning of each of the days listed. This increment is not counted from Aries 0 rather, it is an increment over the mean longitude at the time when the mean anomaly was 0 . By inspection of the table we see that the three equations were derived in the same way according to...

Index

Access and recess 9, 28, 31-33, 61 d'Alemagna, Giorgio 15, 136 Albert of Brudzewo 9 Alfonso X of Castile 2, 5, 16, 23, 136 Almagest 1, 16, 19-20, 32, 95, 97-100, 105, 136-137 Almanach Perpetuum 10-11, 108, 137 Animodar 27, 129-130 Apogees -, lunar 53, 57 -, planetary 3, 9, 24, 28-30, 41-42, -, solar 24, 34-35, 40-43, 45, 78, 90, 119, 121-123 Ascendant 108, 112 Ascensio 93 Azarquiel 104 Batecombe, William 1, 6 al-Battani 16, 61, 100-103, 136 Bessarion, Johannes 13 Bevilaqua, Simon 11 Bianchini,...

Tabula Domorum Clima

Chapter 27 is devoted to the casting of a horoscope for Ferrara and offers a worked example. We are told that the Sun is in Sgr 17 20 at 18 24h, counted from true noon. In Table 85, sub-table for the Sun in Sagittarius, we find 23 3h for 17 and 23 8h for 18 , in the column headed merid. By interpolation, the normed right ascension, expressed in hours and minutes, corresponding to the given position is 23 4,40h. We are then told to add it to the given time and to subtract 24h from the sum. The...

Introduction

One of the characteristics of an exact science is to explain theoretically the processes addressed by that discipline and to treat them precisely in a quantitative way. As an exact science, astronomy makes extensive use of numerical computations. In early astronomy, this is best exemplified by astronomical tables in the tradition of Ptolemy's Almagest that dates to the 2nd century, A.D. Throughout the Middle Ages, astronomers compiled a great variety of astronomical tables to help computers...

P3 pk pk d

Where d, the maximum of the third component of latitude for the inner planets (deviation), is 0 10 for Venus and -0 45 for Mercury. Had he followed them, he would have found for Venus P3 0 5,9 0 30,52 0 2,39 , and the final result would have been P 0 50,53 . Analogously, for Mercury he would have computed P3 -0 44 0 59,12 -0 44 , and in this case his final result would have been the same. In sum, all the entries in Bianchini's latitudes tables ultimately derive from Almagest XIII.5, but...

References

See Ratdolt, Tabule astronomice Alfontij Santritter, Tabule Astronomice Alfonsi Regis and Chabas and Goldstein, Alfonsine Tables of Toledo. Bianchini, Giovanni Tabulae astronomiae (Venice, 1495). - Tabule Joa nni Blanchini Bononiensis (Venice, 1526). Boffito, Giuseppe Le Tavole astronomiche di Giovanni Bianchini da un codice della Collezione Olschki, La Bibliofilia, 9 (1907-1908), 378-388 and 446-460. Chabas, Jos El Lunari de Bernat de Granollachs Alguns aspectes de la...

Symboll Of Elongation Of Planet

True positions of the planets Tables 27 (Saturn), 34 ( Jupiter), 41 (Mars), 48 (Venus), and 56 (Mercury) Na, ff. 24r-32v (Saturn Saturnus) ff. 33r-41v ( Jupiter) ff. 42r-59v (Mars) ff. 60r-77v (Venus) and ff. 78r-86v (Mercury) Nu, ff. 32r-40v (Saturn Incipiunt tabulae veri loci Saturni), ff. 41r-49v ( Jupiter) ff. 50r-67v (Mars) ff. 68r-85v (Venus) and ff. 86r-94v (Mercury) Rc, f. 20r-v (Saturn Saturnus only one folio is preserved, the rest was cut off) ff. 21r-25r ( Jupiter) ff. 25v-34r (Mars)...

Analysis Of The Tables

In the absence of an autograph copy, it is not possible to specify exactly the contents of the astronomical tables of Bianchini. Each manuscript copy and each edition we have consulted includes tables some of which may not be due to him. The problem is not unique to this case, for it applies to other sets of medieval tables that exist in multiple copies, such as the Toledan Tables or the Parisian Alfonsine Tables. As a living text, each copy was 'personal' for some astronomer and differs from...