Fatto generale: 48 is the number of Ptolemaic constellations.
Fatto matematico: 48 is in abundance having an aliquot sum of 76.
Trivia: 48 is the number of Ptolemaic constellations.
Data storica: February 17th is the day in 1996 that NASA's Discovery Program begins as the NEAR Shoemaker spacecraft lifts off on the first mission ever to orbit and land on an asteroid, 433 Eros.