NGC 152
NGC 152 is an open cluster in the constellation Tucana. It was discovered by John Herschel on September 20, 1835. It is located within the Small Magellanic Cloud.
NGC 152 is about 1.40 billion years old. Its estimated mass is, and its total luminosity is, leading to a mass-to-luminosity ratio of 0.31 /. All else equal, older star clusters have a lower luminosity for the same mass; that is, their mass-to-luminosity ratios are higher.