The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, known as the NGC objects. It is one of the largest comprehensive catalogues, as it includes all types of deep space objects, including galaxies, star clusters, emission nebulae and absorption nebulae.
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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 2.5×104 M☉, and its total luminosity is 8.0×104 L☉, leading to a mass-to-luminosity ratio of 0.31 M☉/L☉. All else equal, older star clusters have a lower luminosity for the same mass; that is, their mass-to-luminosity ratios are higher.
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Wikipedia Page: NGC 152
NGC 152 at In-The-Sky website