NGC 2158
open cluster
NGC 2158 is an open cluster of stars in the constellation of Gemini. Alternatively, it may be identified as OCL 468, Lund 206 or Melotte 40. This cluster is located around 11,000 light years from Earth. It is about 2 billion years old, making it an intermediate age cluster. The cluster is populous with stars, containing some 3000 ±69 stars within a radius of about 8 light years.