NGC 2099, also known as the Open Cluster M37, is a bright star cluster located in the constellation Auriga. It is approximately 4,500 light-years away from Earth and contains around 500 stars. The cluster is estimated to be about 300 million years old, making it relatively young in astronomical terms. M37 is notable for its rich concentration of stars, which are primarily of spectral types A and F. It is one of the most prominent open clusters in the night sky and can be observed with binoculars or small telescopes, showcasing a beautiful array of stars against the backdrop of space.