Diameter 119 km
Depth 2.7 km
Colongitude 4° at sunrise
Eponym Alfonso X
NamesAlphonsus is named after King Alfonso X of Castile (known as “Alfonso the Wise”), who had an interest in astronomy. Like many of the craters on the Moon’s near side, it was given its name by Giovanni Riccioli, whose 1651 nomenclature system has become standardized; Riccioli originally named it “Alphonsus Rex” (‘King Alfonso’), but the ‘Rex’ was later dropped.
Book of Games
As an intellectual he gained considerable scientific fame based on his encouragement of astronomy, which included astrology at the time and the Ptolemaic cosmology as known to him through the Arabs. He surrounded himself with mostly Jewish translators who rendered Arabic scientific texts into Castilian at Toledo. His fame extends to the preparation of the Alfonsine tables, based on calculations of al-Zarqali, “Arzachel”. Because of this, the lunar crater Alphonsus is named after him. One famous apocryphal quote attributed to him upon hearing an explanation of the extremely complicated mathematics required to demonstrate Ptolemy’s theory of astronomy was “If the Lord Almighty had consulted me before embarking on creation thus, I should have recommended something simpler.” The validity of this quotation is questioned by some historians. Alfonso also wrote one of the first western chess treatises.
Monument to Alfonso X El Sabio, La Puebla del Rio, Sevilla
a szobor erre néz…és a tekercs
La Puebla del Rio, Sevilla – Donana National ark