NGC2158

NGC 2158 is a small, very old open cluster in Gemini. Lying quite close to the much larger open cluster M35, it is easily found, despite its higher magnitude, about 8 on the visual scale. This cluster appears much like a globular but careful analysis has established beyond any doubt that it is a galactic open. The age of this object has been determined to be just a bit more than 1 billion years and it lies about 16,000 light-years from Earth