V1331 Cygni

V1331 Cygni is a young star in the located 1,950 light years from Earth on the constellation of Cygnus. V1331 Cyg is located in the dark nebula LDN 981.
V1331 Cygni is most noted for having an arc-like reflection nebula surrounding it. This circumstellar disc is a great birthplace for young stars, which form in the cloud. V1331 Cygni is heavily obscured by dust, so the properties of the central star are hard to deduce; however, it is estimated to have a radius five times that of the Sun and a mass of.
The General Catalog of Variable Stars classifies V1331 Cygni as an "INST" type variable, meaning a T Tauri star which shows rapid light variations. Its visual band brightness varies from magnitude 13.08 to 10.58. It is sometimes classified as a pre-FUOR star. A semi-regular period of ~449 days has been reported. Unlike many T Tauri stars, the mean brightness of V1331 Cygni remains nearly constant over long time periods.