NGC 1881 is an open star cluster located in the constellation of Columba. It was discovered by the astronomer John Herschel in 1834 and is approximately 5,000 light-years away from Earth. The cluster contains several hundred stars, with a notable age of around 1.5 billion years. The stars in NGC 1881 are relatively bright and can be observed with small telescopes. This cluster is of interest to astronomers because it provides insights into the evolution of stars and the dynamics of star clusters in our galaxy, the Milky Way.