134 Sophrosyne 134 Sophrosyne Sophrosyne (minor planet designation: 134 Sophrosyne) is a large main-belt asteroid that was discovered by German astronomer Robert Luther on September 27, 1873, and was named after the concept of "sophrosyne", Plato's term for 'moderation'. Classified as a C-type asteroid, it has an exceedingly dark surface and most probably a primitive carbonaceous composition. An occultation of a star by 134 Sophrosyne was observed November 24, 1980, in the United States. Timing information from this event allowed a diameter estimate of 110 km to be derived. Photometric observations of the asteroid in 2015 produced a lightcurve indicating a rotation
Ancient Greek coinage large on-line market for such coins. Hoards of Greek coins are still being found in Europe, Middle East, and North Africa, and some of the coins in these hoards find their way onto the market. Due to the numbers in which they were produced, the durability of the metals, and the ancient practice of burying large numbers of coins to save them, coins are an ancient art within the reach of ordinary collectors. Ancient Greek coinage The history of ancient Greek coinage can be divided (along with most other Greek art forms) into four periods, the Archaic, the Classical, the