Fatto generale: 48 is the number of Ptolemaic constellations.
Fatto matematico: 48 is a double factorial of 6, a highly composite number.
Trivia: 48 is the number of Ptolemaic constellations.
Data storica: February 17th is the day in 1913 that the Armory Show opens in New York City, displaying works of artists who are to become some of the most influential painters of the early 20th century.