Budapest Régiségei 30. (1993)

TÁRGYI EMLÉKEK ÉS LELETEK = DENKMÄLER UND FUNDE - Madarassy Orsolya: Tabula gromatici az aquincumi canabaeból 297-315

projected onto a map, most distortions occur along the north-south direction. 6 The southern border of ecumene was placed by Strabo to a latitude south of Meroe. This latitude, however, was not labelled by any city. 7 The real values are as follows: Meroe 34°E; Syene 33°4'E; Rhodos 28°E; Byzanthium 28°58'E; Borysthenes 30°E. J. M. Dent: Atlas of ancient and classical geography. London (1905). 8 Vitruvius: De architectura libri X. Ed. Krohn. Teubner, Lipsiae (1912). 9 Vitruvius IX. 7 10 J. M. Dent: Atlas of ancient and classical geography. London (1905). 11 Ptolemaios: Mathematicae Syntaxis II. 6. 29-33. 12 Claudius Ptolemaios: Georafike Uphegesis. Ed. Müller. Didot, Paris (1883). Claudius Ptolemaios: Opera omnia. J. L. Heiberg. Teubner, Lipsiae (1907). Ptolemaus: Handbuch der Astronomic Edited by K. Manitius. Teubner, Leipzig (1963). 13 Ptolemaios: Georaphike I. 23. Ptolemaios: Syntaxis II. 6. Following the system of Ptolemaios, the marble fragment under discussion in this study could be completed as follows: Circle 5 - Rome Circle 6 - Mediolanum Circle 7 - Lugdunum Circle 8 - Londinium Circle 9 - Thule (cf. Map 2) 14 Ptolemaios: Syntaxis 1.

11. 15 Gallia 43 (1985) 481^82. 16 Peri analemmatos.Claudius Ptolemaios: Opera omnia. 17 On the basis of Ptolemaios this may equally be an auxiliary sketch showing the orbit of the Moon or other planets. Syntaxis: passim. 18 Vitruvius IX. 7. Claudius Ptolemaios: Peri analemmatos. 19 Syntaxis II. 12-13. 20 Alexandria (Upper Egypt) is presented by its real geographical latitude in the work of Ptolemaios. On the Aquincum fragment, this circle was arrived at by construction, therefore it is generalized. 21 Aquincum: Syene 24° 28° 38° 52° Alexandria 32° 37° 44° 54° Rhodos 36° 39° 46° 56° Athens 38° 40° 47° 57° (Rome) 42° 45° 52° 59° (Mediolanum) 46° 49° 54° (Aug. Trev.) 50° 53° 6/6 hours) 37°36' 49°42' 90° 45°31' 55°6' 90° 22 It is plausible that the that further data on the basic meridian were present somewhere on the complete object, for example, in the form of an inscription. They can, however, also be estimated on the basis of the meridian represented by the Syene Alexandria - Rhodos line. Thus the dislocation originating west of Athens may also be measured. Should this be the case, Circle 6 could be more precisely labelled with the names of Aquileia or Mediolanum than Lugdunum. Time difference can thus be used in calculating the difference between meridians. Ptolemaios (equinox - Aries/Libra Syene 23°51' 27°56' 62°47' 76°20' Rhodos 36° 38°37' 66°9' 77°36' 49°42' 55°6' 305